SERVICE MANUAL
COMPACT DISC DECK RECEIVER
US Model
Canadian Model
CX-JS77
Ver. 1.2 2005.05
9-877-747-03 Sony Corporation
2005E05-1 Personal Audio Group
© 2005.05 Published by Sony Engineering Corporation
SPECIFICATIONS
CX-JS77 is the amplifier, CD player, tape deck
and tuner section in JAX-S77.
Model Name Using Similar Mechanism NEW
CD
CD Mechanism Type CDM74-F1BD81
Section
Base Unit Name BU-F1BD81A
Optical Pick-up Block Name KSM-215DCP
Tape deck
Model Name Using Similar Mechanism CX-JN5
Section
Tape Transport Mechanism Type CWM43FF13
Amplifier section
AUDIO POWER SPECIFICATIONS
(USA models only)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 6 ohm loads, both channels driven, from
120 – 10,000 Hz: rated 180 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Continuous RMS power output (reference):
180 + 180 watts (6 ohms at
1 kHz, 10% THD)
Total harmonic distortion less than 0.07% (6 ohms at
1kHz, 80 W)
Inputs
VIDEO/MD IN (phono jacks):
voltage 450/250 mV,
impedance 47 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
SPEAKER: accepts impedance of 6 to
16 ohms
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
Frequency response 2 Hz – 20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
Tape deck section
Recording system 4-track 2-channel, stereo
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz
(100-kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,710 kHz
(with the tuning interval
set at 9 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
120 V AC, 60 Hz
Power consumption
165 watts
Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/Tape/CD section:
Approx. 280 × 325 ×
425 mm
Mass
Approx. 9.9 kg
Design and specifications are subject to change
without notice.
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17
CX-JS77
SECTION 4
TEST MODE
MC COLD RESET
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press three buttons of x , [P FILE] and [DISC 1] simulta-
neously.
3. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.
TUNER STEP CHANGE-OVER
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press the [TUNER/BAND] button to select “AM”.
3. Press the I/1 button to turn the power OFF.
4. Press two buttons of [PLAY MODE/TUNING MODE] and
I/1 simultaneously.
5. The message “AM 9K STEP” or “AM 10K STEP” is displayed
on the fluorescent indicator tube, and thus the channel step is
changed over.
CD SHIP (LOCK) MODE
• This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press the [CD] button to select “CD”.
3. Press two buttons of [CD] and [POWER] simultaneously.
4. The message “LOCK” is displayed on the fluorescent indica-
tor tube, and the CD ship mode is set.
CD SHIP (LOCK) MODE & COLD RESET
• This mode is used to perform CD chip (lock) mode and cold
reset simultaneously.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press the [CD] button to select “CD”.
3. Press three buttons of x , [CD] and [DISPLAY] simulta-
neously.
4. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.
CHANGE-OVER FUNCTION OF MD/VIDEO
• This mode is used to enable function of external input to change
over between MD and VIDEO.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press two buttons of VIDEO (MD) and I/1 simultaneously.
3. The message “MD” or “VIDEO”is displayed on the fluores-
cent indicator tube, and the function of external input is
changed over.
CD TRAY LOCK MODE
• This mode is used to unable to take sample disc out of tray in
the shop.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press the [CD] button to select “CD”.
3. Set disc on the CD tray, press two buttons of x and Z for 5
seconds.
4. The message “LOCKED” is displayed on the fluorescent in-
dicator tube and the CD tray is locked. (Even if pressing
the Z button, the message “LOCKED” is displayed on the
fluorescent indicator tube and the CD tray is locked)
5. To release from this mode, press two buttons of x and Z for
5 seconds.
6. The message “UNLOCKED” is displayed on the fluorescent
indicator tube and the CD tray is unlocked.
AMP TEST MODE
• This mode is used to display the parameter of amplifier IC and
display the VACS status.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press three buttons of x , [P FILE] and [PLAY MODE/
TUNING MODE] simultaneously.
3. When the AMP test mode is activated, the message “AMP
TEST IN” is displayed on the fluorescent indicator tube
momentarily, then amplifier adjustment mode is displayed on
the fluorescent indicator tube.
4. Press the [DISPLAY] button to changed over between VACS
status display mode and the amplifier IC parameter display
mode.
5. In the amplifier IC parameter display mode, press the [i-BASS]
button to changed over DBFB ON/OFF, and when it is ON,
the character “D” is displayed on the fluorescent indicator tube.
6. In the amplifier IC parameter display mode, press the
[SURROUND] button to changed over surround ON/OFF, and
when it is ON, the character “S” is displayed on the fluorescent
indicator tube.
7. In the amplifier IC parameter display mode, turn each knob of
[BASS], [MIDDLE] and [TREBLE] causes respective param-
eters to be changed, as well as change-over of the display on
the fluorescent indicator tube.
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CX-JS77
AGING MODE
• This mode can be used for operation check of CD section and
tape deck section.
CD section and tape deck section work in parallel.
If an error occurred:
The aging operation stops only an error occurred sections and
display then status.
If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press the [CD] button to select “CD”.
3. Set disc on the CD tray and set tape into the deck.
4. Press three buttons of x , [P FILE] and [DISC SKIP/EX-
CHANGE] simultaneously.
5. Aging operations of CD and tape are started at the same time.
6. To release from this mode, press the I/1 button to turn the
power OFF and press the function buttons.
1. Display at the Aging Mode
Display operating state of CD section and tape deck section alter-
nately.
If an error occurred, stop display which that section.
2. CD Section
The sequence during the aging mode is following as below.
Display at the aging mode is the same as the normal operation.
Aging mode sequence (CD section) :
Start (from disc 1)
Disc chucking
TOC read
Play first track for 2 seconds
Play last track for 2 seconds
EX-change open/close
Open the disc tray
Disc skip
Close the tray
Change the next disc.
3. Tape Deck Section
The sequence during the aging mode is following as below.
If an error occurred, stop display that step.
Aging mode sequence (tape deck section) :
Rewind the tape A and B
“TAPE AAG-1 or TAPE BAG-2”
Shut off
FWD play the tape A
“TAPE AAG-3”
2 minutes
Rewind the tape A
“TAPE AAG-6”
Shut off
FWD play the tape B
“TAPE BAG-3”
2 minutes
Rewind the tape B
“TAPE BAG-6”
Shut off
Note: “TAPE
*
AG-
*
” is display of each step.
PANEL TEST MODE
• This mode is used to check the fluorescent indicator tube, LEDs
and buttons.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press three buttons of x , [P FILE] and [ENTER] simulta-
neously.
3. Fluorescent indicator tube and LEDs are all turned ON.
4. Press two buttons of X and [ENTER] simultaneously, mode
is changed over.
5. In the key check mode, press each key, the defined key num-
ber of every each key list is displayed on the fluorescent
indicator tube.
6. In the key count check mode, “KEYCNT 0” is displayed on
the fluorescent indicator tube. Each time a key is pressed, “K”
value increases. However, once a key is pressed, it is no longer
taken into account.
7. In the headphone input check mode, connect the headphone,
the message “H_P ON” is displayed on the fluorescent indica-
tor tube, and disconnect the headphone, the message “H_P
OFF” is displayed on the fluorescent indicator tube.
8. In the volume check mode, “VOLUME FLAT” is displayed
on the fluorescent indicator tube. Turn the [VOLUME] knob
clockwise, the message “VOLUME UP” is displayed on the
fluorescent indicator tube momentarily and turn the [VOLUME]
knob counterclockwise, the message “VOLUME DOWN” is
displayed on the fluorescent indicator tube momentarily.
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CX-JS77
MC TEST MODE
• This mode is used to check operations of microprocessor.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press three buttons of x , [P FILE] and [DISC 3] simulta-
neously.
3. When the MC test mode is activated, VACS level is displayed
on the fluorescent indicator tube momentarily.
4. Turn the [AMS/TUNING] knob clockwise, the message “ALL
EQ MAX” is displayed on the fluorescent indicator tube mo-
mentarily and turn the [AMS/TUNING] knob counterclock-
wise, the message “ALL EQ MIN” is displayed on the fluo-
rescent indicator tube momentarily.
5. Press the [PRESET EQ] button, the message “ALL EQ FLAT”
is displayed on the fluorescent indicator tube momentarily.
6. Turn the [VOLUME] knob clockwise, the message “VOLUME
MAX” is displayed on the fluorescent indicator tube momen-
tarily and turn the [VOLUME] knob counterclockwise, the mes-
sage “VOLUME MIN” is displayed on the fluorescent indica-
tor tube momentarily.
7. Press the [i-BASS] button to changed over VACS ON/OFF.
8. When the [REC PAUSE/START] button is pressed twice with
a tape set in the deck-B, the function is switched “MD” or
“VIDEO” and recording starts. When the m or M button
is pressed during recording, the tape is rewound back to the
beginning of recording, the function is switched to “TAPE B”,
then playback starts.
9. When the [CD SYNC] key is pressed with the test tape (AMS-
100, AMS-110A) in the deck, number of space between tunes
is counted, then if AMS-110A is set, “OK” is displayed on the
fluorescent indicator tube and if AMS-100 is set, “NG” is dis-
played on the fluorescent indicator tube.
10. Press the
I/1 button to release from this mode, then cold re-
set is performed.
VERSION DISPLAY MODE
• This mode is used to check the model, destination and software
version.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press three buttons of x , [P FILE] and [DISC 2] simulta-
neously.
3. When this mode is activated, model and destination is displayed
on the fluorescent indicator tube.
4. Press the [DISPLAY] button to changed over between soft-
ware version and year, month, day of the software creation
display mode and model and destination display mode.
5. To release from this mode, press three buttons of x , [P FILE]
and [DISC 2] simultaneously.
CD ERROR CODE DISPLAY MODE
• This mode can be used for error code display of CD section.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press the [CD] key to select “CD”.
3. Press three buttons of x , [CD] and [DISC 1] simultaneously.
4. When this mode is activated, mechanism deck error code is
displayed on the fluorescent indicator tube.
5. Press the [i-BASS] button to changed over between optical
pick-up error code display mode and mechanism deck error
code mode.
6. Turn the [AMS/TUNING] knob to change over display of er-
ror history.
1. Mechanism Deck Error Code Mode
• When this mode is entered, mechanism deck error code is dis-
played with the 10-character format on the fluorescent indica-
tor tube.
The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the mechanism deck error code mode, “M” is displayed on
the fluorescent indicator tube.
The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.
Display Status
00 No error
08 Table operation time-out (Table does not move to
the target position within the specified time)
16 In the chucking down operation, the operation was
retried by the maximum number of times but the
operation could not be completed
17 In the chucking up and down operation, the reverse
recovery processing was attempted but it could not
be recovered
18 In the chucking up operation, the operation was
retried by the maximum number of times but the
operation could not be completed
20 Loading operation time-out (Table does not move
to the target position within the specified time)
22 As the chuck was in the ex-open status at the
initialization, the closing was attempted but could
not be completed
The 5th and 6th digit from the left indicates:
(Present status display)
The 5th and 6th digit from the left indicates which operating status
when an error occurred is indicated.
Display Status
01 Open completion status
02 From open status, the movement to chucking down
position is under way
03 From chucking down position, the open operation
is under way
04 Chucking down completion status
10 The chucking down operation is under way
11 The chucking up operation is under way
12 Close completion status
13 From close status, the ex-open operation is under
way
14 From ex-open status, the close operation is under
way
18 Ex-pen completion status
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CX-JS77
The 5th and 6th digit from the left indicates:
(Error step display)
The 5th and 6th digit from the left indicates which processing when
a trouble occurred
Display Contents
01 Power OFF in progress
02 Initialize in progress
03 Oscillation stopping
04 From oscillation stop, oscillation starting
05 Stopping
06 Stop operation is under way
07 Start operation in progress
08 TOC read in progress
09 Search operation is under way
0A Playback operation is under way
0B Pause operation is under way
0C Playback manual search operation is under way
0D Pause manual search operation is under way
0E —
The 7th and 8th digit from the left indicates:
The 7th and 8th digit from the left indicates which operation in
progress when a trouble occurred. (Step of each processing of the
5th and 6th digits is indicated)
5 REPEAT LIMIT CANCEL MODE
• Number of repeat for CD playback is 5 times when the repeat
mode is “REPEAT”. This mode is used to enables CD to repeat
playback for limitless times.
Procedure:
1. Press the I/1 button to turn the power ON.
2. Press the [CD] button to select “CD”.
3. Press three buttons of x , [CD] and [ENTER] simultaneously.
4. The message “LIMIT OFF” is displayed on the fluorescent
indicator tube momentarily, CD repeat 5 limit is cancelled.
The 7th and 8th digit from the left indicates:
(Motor status display)
The 7th and 8th digit from the left indicates which motor output
status when an error occurred is indicated.
Display Status
× 0 No table motor output
× 1Table motor forward output
× 2Table motor backward output
× 3Table motor break output
0 × No loading motor output
1 × Loading motor forward output
2 × Loading motor backward output
3 × Loading motor break output
The 9th and 10 th digit from the left indicates:
(Tray status display)
The 9th and 10th digit from the left indicates which target
processing when an error occurred is indicated.
Display Status
01 Open operation
12 Close operation
18 Ex-open operation
2. Optical Pick-up Error Code Mode
• When this mode is entered, optical pick-up error code is dis-
played with the 8-character format on the fluorescent indicator
tube.
The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the optical pick-up error code mode, “D” is displayed on the
fluorescent indicator tube.
The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.
Display Status
01 Not focused (TOC read without a disc)
02 GFS NG (TOC read with a disc chucked)
03 Start operation time-over
04 Defocused continuously (Defocused during TOC
reading)
05 Q code not entered for specified time
06 Tracking not turned ON
07 Blank disc (Blank disc TOC read)
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CX-JS77
2121
CD SECTION
Note:
1. CD Block is basically designed to operate without adjustment. Therefore,
check each item in order given.
2. Use YEDS-18 (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩ impedance.
4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
S-CURVE CHECK
Procedure :
1. Connect an oscilloscope to TP (FE) and TP (VC) on the CD
board.
2. Press the I/1 button to turn the power ON.
3. Load a disc (YEDS-18) and actuate the focus search. (In
consequence of open and close the disc tray, actuate the focus
search)
4. Confirm that the oscilloscope waveform (S-curve) is
symmetrical between A and B. And confirm peak to peak level
within 3 ± 0.5 Vp-p.
Note: • Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the
brightness to obtain best waveform.
Connecting Location: CD board
RFAC LEVEL CHECK
Procedure :
1. Connect an oscilloscope to TP (RFACO) and TP (VC) on the
CD board.
2. Press the I/1 button to turn the power ON.
3. Load a disc (YEDS-18) and playback.
4. Confirm that oscilloscope waveform is clear and check if RFAC
signal level is correct or not.
Note: Clear RFAC signal waveform means that the shape “ ◊ ” can be
clearly distinguished at the center of the waveform.
Connecting Location: CD board
CD board
Oscilloscope
TP(FE)
TP(VC)
symmetry
S-curve waveform
within 3
±
0.5 Vp-p
A
B
SECTION 5
ELECTRICAL ADJUSTMENTS
TP(RFACO)
CD board
oscilloscope
TP(VC)
RF signal waveform
VOLT/DIV : 200mV
TIME/DIV : 500ns
level : 1.3
±
0.3 Vp-
p
– CD BOARD (Conductor Side) –
TP
(VC)
TP
(FE)
TP
(RFACO)
IC101
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CX-JS77
2222
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM – SERVO Section –
MIACK
8
PO11/BUCK/AD14
36
MILP
5
RESET
2
MICS
4
MIDIO
6
MICK
7
9RIN
LM-R
4 OUT1
2 OUT2
M751
(LOADING)
M
LOADING MOTOR DRIVE
IC701
7FIN
LM-F
MP3-STB
CD-MUTING
9RIN
TM-R
4 OUT1
2 OUT2
M741
(TABLE)
M
TABLE MOTOR DRIVE
IC712
7FIN
TM-F
B
MP3 DECODER
IC301
A/D
CONVERTER
CH2OUTF
CH2OUTR
23
24
21
4
5
5
7
17
18
16
15
RFACI
ASYO
ASYI
FILTER
FILO
PCO
CLTV
FILI
DIGITAL PLL
ASYMMETRY
CORRECTOR
EFM
DEMODULATOR
CD DSP
IC101 (1/2)
MDP
DIGITAL
CLV
PROCESSOR
32K
RAM
ERROR
CORRECTOR
INTERNAL BUS
SQCK
SQSO
EXCK
AOUT1
C4M
XTSL
XTAO
XTAI
AOUT2
R-CH
D/A
DIGITAL
INTERFACE
D/A
CONVERTER
SELECTOR
CLOCK
GENERATOR
SUBCODE
PROCESSOR
SCOR
WFCK
XUGF
GFS
EMPH
SENS
DATA
CLOCK
XLAT
SBSO
I-SENS
O-CD-DATA
O-XLT (CD-LAT)
TEI
FEI
FOCUS/
TRACKING/SLED
SERVO DSP
FOCUS/TRACKING/SLED
PWM GENERATOR
SFDR
CH3FIN
CH4IN
CH3RIN
CH3OUTF
CH3OUTR
CH1FIN
CH1RIN
CH2FIN
CH2RIN
20
MUTE
SRDR
TFDR
TRDR
FFDR
FRDR
SSTP
COUT
MIRR,
DFCT, FOK
DETECTOR
SERVO AUTO
SEQUENCER
SERVO
INTERFACE
CPU INTERFACE
SCLK
TO CPU INTERFACE
FOK
MIRR
DFCT
2
OPIN+
CH4OUTF
CH4OUTF
27
OPOUT
M101
(SPINDLE)
MOTOR
DRIVE
MOTOR
DRIVE
COIL
DRIVE
CH1OUTF
CH1OUTR
COIL
DRIVE
M
M
M102
(SLED)
MOTOR/COIL DRIVE
IC251
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
CD DSP
IC101 (2/2)
• SIGNAL PATH
: CD PLAY
14
13
11
12
I-SCOR (Q-DATA REQ)
A
CD
STANDBY
13
11
12
9
10
14
119
108
21 23
3
1
2
7
TO SERVO AUTO
SEQUENCER
42
51 53
XPCK
112
50
52
45
46
6
XRST
100
O-XRES (RESET)
93
96 97
81
78
117 93
77
86
98 99115107102 105 104 110 111
113
68
95
O-CD-CLK
97 94
LRCK
BCK
PCMD
LRCKIA
SDI0
63 66 65
16
BCKIA
15
SFSY/LRCKIB
19
SBSY/BCKIB
18 14
LRCKI
BCKI
PCMDI
SDO0
62 60 61
1196 5
3
26
27
28
29
24
22
20
19
37
36
E
B
A
CD +3V
F
DETECTOR
A
B
C
D
RF
SUMMING
AMP
FOCUS
ERROR
AMP
TRACKING
ERROR AMP
RFACO
FEO
TEO
E
F
AUTOMATIC
POWER
CONTROL
Q10
APC LD
AMP
LD
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSM-215DCP)
PD
I-V AMP
D
C
EQ_
IN
41
35
34
EQ
AC_
SUM
RFAC
VCA
X171
16.9344MHz
73I-CD NUM SENSER
20I-CD ENCODER
21I-CD OPEN/CLOSE
SYSTEM CONTROLLER
IC601 (1/3)
S751
OPEN/CLOSE
DETECT
OPEN
CLOSE
LEVEL SHIFT
Q731
TABLE ADDRESS
SENSOR
IC731
CD-MUTING,
MP3-STB,
LM-F, LM-R,
TM-F, TM-R
S101
(LIMIT)
ROTARY
ENCODER
S711
DISC TRAY
ADDRESS DETECT
I-MP3-DI
99
O-MP3-DO
98
O-MP3-CLK
100
O-MP3 CS
1
I-MP3 ACK
3
I-MP3 REQ
4
O-MP3 LP
2
O-XTCN
92
O-MP3 RESET
6
R-CH
MUTING
Q306
MUTING
CONTROL
Q304, 305
• R-ch is omitted due to same as L-ch.
XTACN
95
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CX-JS77
2323
6-2. BLOCK DIAGRAM – MAIN Section –
OVER LOAD
DETECT
Q441, 442
PROTECT
DETECT
Q485, 487
AMS DETECT
Q327
THERMAL
DETECT
Q483, 484
FAN MOTOR
DRIVE
Q310
FEED BACK
SWITCH
Q106
TH441
R-CH
R-CH
R-CH
+
R-CH
R-CH
7
INPUT SELECT,
TONE CONTROL,
ELECTRICAL VOLUME
IC101
LOADING/TABLE
MOTOR DRIVE
IC371
Q1
6
Q0
37
TONE OUT1
15
REC OUT1
33
VOL OUT1
3
DATA
4
CLOCK
5
LCH
19
SI
10
Q4
12
Q6
14
Q8
CD-MUTING
MP3-STB
17
Q11
FRONT SP RELAY
11
Q5
TU-MUTING
13
Q7
LM-R
LM-F
16
Q10
TM-F
15
Q9
1
CD L
61
TUNER L
3
TAPE L
9
TAPE A1
7
PB OUT1
11
TAPE B1
63
MD L
36
VIN1
TM-R
REC/PB
SWITCH
IC201,
Q322, 323
R-CH
CD
A
CD-MUTING, MP3-STB,
LM-L, LM-R, TM-L, TM-R
B
• SIGNAL PATH
: CD PLAY
: TAPE PLAY (DECK-A)
: REC
• R-ch is omitted due to same as L-ch.
: TAPE PLAY (DECK-B)
: TUNER
MOTOR/PLUNGER DRIVER
IC602
18
SO
11
MP3-STB
C
JK101
R
VIDEO/MD
IN
L
: AUX IN
D481
D207
D206
M901
(FAN)
D201
J801
PHONES
SPEAKER
IMPEDANCE
USE 6 – 16Ω
+
–
–
+
R
L
JK441
FM/AM TUNER PACK
AM
FM ANT
AM ANT
TUNER-L
TUNER-R
LC72121 CE
CE
R-CH
ANT GND
ANT GND
TUNED
TUNED
STEREO
STEREO
TU MUTE
TU-MUTING
LC72121 DI
DO
LC72121 DO
DI
LC72121 CLK
CLK
CE
TUNED
STEREO
DO
DI
CLK
FM 75Ω
COAXIAL
BIAS OSC
L101
REC BIAS
SWITCH
Q324
B +9V
BIAS OSC
Q321
ERASE
HRPE1
(REC/PB/ERASE)
(DECK-B)
HP1
(PB)
(DECK-A)
L-CH
R-CH R-CH
L-CH
R-CH R-CH
40
AMS OUT
BAND-PASS
FILTER
Q351, 352
56
SAOUT1
18
SC
+
RY441
–1
–2
PROTECTOR
Q486, 488
POWER ON
MUTING
Q105
STANDBY
SWITCH
Q489
LEVEL
SHIFT
Q490, 491
MUTING
Q103
MUTING
CONTROL
Q101, 102
POWER AMP
ON/OFF
Q308
DC
DETECT
Q481, 482
+
+
+
POWER
AMP
IC441
LINE AMP
IC102
B+9V
B+9V
POWER ON
MUTING
Q309, 313
83
I-LC72121 DI
86
O-LC72121/BU2099FV CLK
84
O-LC72121 CE
67
I-TUNED-IN
68
I-STEREO-IN
87
O-BU2099FV LCH
85
O-LC72121/BU2099FV DO
69
I-AMS-IN
24
I-STREAM/VACS
19
WFR/HP/MIC-IN
18
I-PROTECT
91
O-BD3401 DATA
88
O-BD3401 CLK
75
O-SYSTEM-MUTE
8
CAPSTAN/REEL
MOTOR DRIVE
Q601
6
PLUNGER DRIVE
(DECK-A)
Q603
MM
(CAPSTAN/REEL)
(DECK-A)
(DECK-B)
MOTOR
SOL-A
MM
7
PLUNGER DRIVE
(DECK-B)
Q602
SOL-B
A-HALF
B-SOL
A-SOL
CAPM+
A-MODE
REC (REW)
A-PHOTO
B-PHOTO
I-REEL A IN
I-REEL B IN
22
70
71
I-TAPE A STAT
3
DATA
4
CLOCK
5
LCH
B-HALF
B-MODE
REC (FWD)
23
I-TAPE B STAT
SYSTEM CONTROLLER
IC601 (2/3)
TAPE MECHANISM
DECK BLOCK
(Page 22)
(Page 22)
(Page 24)
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CX-JS77
2424
6-3. BLOCK DIAGRAM – PANEL/POWER SUPPLY Section –
–27V
REGULATOR
Q902
W001
(AC IN)
SUB POWER
TRANSFORMER
PT902
RY901
VF1, 2
VDD2
VDD1,
VDD3/4
TO
FLUORESCENT
INDICATOR TUBE
+12V
REGULATOR
Q311
–VFL
VP
MAIN POWER
TRANSFORMER
PT901
RECT
D401
RECT
D301 – 304
AMP B+ 1
AMP B– 1
RECT
D402
AMP B+ 2
AMP B– 2
D324 – 326
D321
D609
D610
D607, 608
D316
D908
RECT
D314, 315
+3.3V
REGULATOR
IC301
B+3.5V
+3.3V
REGULATOR
IC302
VOLTAGE
DETECT
IC604
+3.3V
REGULATOR
IC603
CD +3V
+1.5V
REGULATOR
IC303
CD +1.5V
RECT
D309 – 312
RECT
D902 – 904
RY B+
FAN B+
+9V
REGULATOR
IC304
CD M+7V
RECT
D305 – 308
UNREG +16V
+9V
REGULATOR
IC303
B+9V
EVER +10V
M +9V
B+3.5V
B+ SWITCH
Q312
B+ SWITCH
Q604, 616
RESET SWITCH
Q605
B+ SWITCH
Q314, 315
RELAY DRIVE
Q361, 362
29I-AC CUT
74O-POWER RELAY
11RESET
SYSTEM CONTROLLER
IC601 (3/3)
O-POWER LED
76
FRONT SP RELAY
C
FLUORESCENT
INDICATOR TUBE
FL601
S1 – 21
G1 – G13
42 – 30
43 – 45, 47 – 50,
52 – 65
LED601
I/1
O-I-BASS LED
77
I-SIRCS-IN
28
LED602
i-BASS
LED DRIVE
Q609
REMOTE CONTROL
RECEIVER
IC610
S601 – 610,
S621 – 630,
S641 – 650
(FRONT PANEL KEYS)
10 I-VOLUME-IN2
9 I-VOLUME-IN1
ROTARY
ENCODER
S660
VOLUME
82 I-MULTI-JOG IN2
I-KEY1 –
I-KEY3
81 I-MULTI-JOG IN1
ROTARY
ENCODER
S661
AMS/
TUNING
27 – 25
X601
32.768kHz
13
12
O-XT2
I-XT1
16
15
X602
10MHz
CF2
CF1
(Page 23)
http://www.xiaoyu163.com
http://www.xiaoyu163.com
CX-JS77
2525
6-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
C
B
These are omitted.
E
Q
B
These are omitted.
CE
Q
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
– BD Section –
no mark : CD PLAY
– Other Sections –
no mark : FM
(): TAPE PLAY
〈〈 〉〉 : TAPE REC
[]: CD PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : TUNER (FM/AM)
E : TAPE PLAY (DECK A)
d : TAPE PLAY (DECK B)
G : REC
J : CD PLAY
L : AUX IN
• Circuit Boards Location
SENSOR board
PANEL board
CDMP3 CONNECT board
MAIN boar
d
POWER board
SUB TRANS board
TRANS board
HEADPHONE board
CD board
MOTOR (TB) board
MOTOR (LD) board
SW board
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.
• Indication of transistor.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
http://www.xiaoyu163.com
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CX-JS77
2626
C10
C260
C14
C15
C16
C13
C18
C11
R414
R413
R405
C316
R356
R355
R354
R353
R352
R351
R302
R253
R195
R194
R192
C315
R191
R172
R171
R162
R313
X171
R121
R12
R11
R10
L301
Q10
C351
C116
C312
C184
C183
C303
C302
C305
C259
C258
C257
C255
C203
C196
C195
C201
C301
C182
C171
C172
C12
C308
C151
C134
C125
C121
C314
C123
R164
R165
R13
C261
C17
FB301
C401
C204
C318
R201
C174
R173
C205
C207
R205
C209
C208
C210
X172
M101
M102
S101
R419
R412
R411
R410
R409
R408
R407
R406
R404
R403
R402
R401
R305
R303
R301
R252
R251
R182
R181
R163
R151
R143
R142
R141
R133
R132
R131
R114
R113
R112
R111
R307
C313
C311
C310
C309
C307
C306
IC251
C252
C251
C194
C181
C320
IC101
C163
C162
C143
C142
C141
C133
C132
C131
C124
C111
C122
C115
C114
C113
C112
IC301
C185
C186
R306
CN101
IC303
CN201
C317
R203
R161
C161
C211
C212
R204
C213
E
(COMPONENT SIDE)
CD BOARD
1-860-502-
12
(12)
1
30
31 60
120 91
90
61
1-860-502-
12
(12)
(CONDUCTOR SIDE)
CD BOARD
17 814
28 22 21 15
TP
(VC)
TP
(FE)
TP
(RFACO)
(LIMIT)
(SPINDLE)
M
(SLED)
M
1
27
A
CDMP3 CONNECT
BOARD
CN871
31
116
4833
17
32
64
49
45
OPTICAL
PICK-UP
BLOCK
(KSM-215DCP)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
A
B
C
D
E
F
G
H
I
6-5. PRINTED WIRING BOARD – CD Board – • See page 25 for Circuit Boards Location. :Uses unleaded solder.
(Page 30)
http://www.xiaoyu163.com
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CX-JS77
2727
R406
R407
R408
R409
R411
R412
R410
C151
R203
C141
R143
R142
R141
C133
R133
R132
R131C134
TP125
TP124
C125 R121
C15
C122C123
C132
C142
R151
C111
C113
C112
C114
R111
TP429
TP428
TP430
TP431
C115
C195
TP432
IC101
C163
R163
C196
R162
C210
C194
R253TP418
JPO004C251R252R251
C16R12
JPO10 R11
C17
C18
R10
TP10
TP11
TP12
TP13
TP14
TP15
TP16
TP17
TP18
TP19
C182
C201
C181
C258
C257
C252
C255
C260
R181
R182
C183
C184
C203
C162
C161
R161
R352
TP427
TP103
TP104
TP105
C209
TP436
TP420
TP421
C186
C185
R191
TP251
TP252
TP253
TP250
C306
R405
R404
R419
R403
R402
R401
R302
C317
R305
R301
C316C315
R313
C307
C302 C303
C305 TP422
C312C313
C314
C311 C309
C308
R303
C310
R353
R354
C11
C10
C14
C116
C318
R307
R351
TP433
TP187
TP401
TP409
TP411
TP410
TP434
TP419
TP412
TP413
TP414
TP415
TP416
TP417
TP408
TP407
TP406
TP405
TP404
TP403
TP402
TP186
R205
C320
C213
C212
C211
TP435
CN101
TP423
IC301
R173
Q10
C143
C171 R171
R172
R165
TP425
TP426
S101
C259
IC251
M102
M101
R201
R204
CN201
FB301
IC303
TP102
R306
R113
JPO102
JPO103
R13
TP424
R112
R114
TP177
C124
C172
C131
C174X171
100
100
100
100
100
100
100
100
10V
0
0.1
3.3k
1k
4.7k
0.01
180k
10k
1M0.1
RFACI
RFACO
0.1 15k
0.1
0.10.1
0.47
1500p
0
3300p
3300p
470p
470p
1k
FFDR
FRDR
TRDR
TFDR
0.1
0.1
MDP
CXD3059AR
0.1
100
0.1
47k
0.1
0.1
10kGAIN_SW
MDP6800p22k10k
1100k
APC 0
220
4V
1000p
3.3
E
D
A
B
C
PD
F+
F-
T-
F-
0.1
100
10V
0.1
0.1
0.1
0.1
0.1
220
10V
100
100
22
6.3V
22
6.3V
100
10V
0.1
0.1
100
100
PCMDI
LRCK
PCMD
BCK
0.01
AVDD
AGND
DGND
470p
470p
0
SP+
SL+
SL-
SP-
0.1
100
100
100
100
100
100
10k
0.01
100k
100k
0.00220.1
220
0.1
0.1 0.1
220
4V
MP3GND
0.10.1
47
4V
0.1 0.1
47
4V
100k
0.1
100
100
10
10
0.1
100
10V
0.01
10k
100
MP3VDD
MGND
MP3STB
DOUT
LOUT
ROUT
AVDD
XTCN
XRST
DATA
XLT
CLK
SENS
SCOR
MP3RST
MICS
MILP
MIDIO
MICK
MIACK
MP3REQ
MVDD
0
0
22p
22p
220p
DVDD
16P
IOP1
TC94A34FG-002
0
2SB1690K
0.1
22p 470
1M
0
SW+
SW-
0.1
BA5947FM
27P
BH15FB1WG
F
0
1k
FEI
TEI
1
IOP2
15k
15k
VC
330p
27p
100p
0.116.9344MHz
E
F
F
E
D
A
B
C
MIACK
MICK
MIDIO
MILP
MICS
SCOR
SENS
CLOCK
DATA
XRST
XLT
CLOCK
SENS
SCOR
XRST
MP3REQ
DATA
MP3STB
XTACN
XTACN
MP3STB
D
C
B
A
MP3RST
XLT
MP3REQ
MIACK
MICK
MIDIO
MILP
MICS
MP3RST
MDP
SFDR
SFDR
SRDR
SRDR
FRDR
FRDR
FFDR
FFDR
TFDR
TFDR
TRDR
TRDR
F+
F+
T+
T+
T-
T-
F-
F-
MDP
DOUT
DOUT
AOUT1
AOUT2
AOUT1
AOUT2
VC
VCC
PD
LD
T-
F-
T+
F+
VR
AGND
F
C
B
A
E
D
OPIN-
OPIN+
SW
CH1FIN
CH1RIN
CH2FIN
CH2RIN
GND
CNF4
POWVCC
CH2OUTR
CH2OUTF
CH1OUTR
CH4OUTR
CH4OUTF
CH3OUTF
CH3OUTR
POWVCC
MUTE
GND
CH3RIN
CH3FIN
CH4IN
CH4CAPA
OUTVREF
OPOUT
PREVCC
MIRR
NC
DFCT
FOK
VSS
LOCK
MDP
SSTP
IOVSS1
SFDR
SRDR
TFDR
TRDR
FFDR
FRDR
IOVDD1
AVDD0
AVSS0
NC
E
F
TEI
TEO
FEI
FEO
VC
A
B
C
D
NC
AVDD4
RFDCO
PDSENS
AC_SUM
EG_IN
LD
PD
RFC
AVSS4
RFACO
RFACI
AVDD3
BIAS
ASYI
ASYO
NC
VPCO
VCTL
AVSS3
CLTV
FILO
FILI
PCO
AVDD5
DDVROUT
DDVRSEN
AVSS5
DDCR
NC
BCKI
LRCKI
LRCK
VSS
PCMD
BCK
VDD
EMPH
EMPHI
IOVDD2
DOUT
TEST
TEST1
IOVSS2
NC
XVSS
XTAO
XTAI
XVDD
AVDD1
AOUT1
VREFL
AVSS1
AVSS2
VREFR
AOUT2
AVDD2
NC
IOVDD0
RMUT
LMUT
NC
XTSL
IOVSS0
XTACN
SQSO
SQCK
SBSO
EXCK
XRST
SYSM
DATA
VSS
XLAT
CLOCK
VDD
SENS
SCLK
ATSK
W
FCK
XUGF
XPCK
GFS
C2PO
SCOR
VDD
C4M
WDCK
COUT
PCMDI
VIN
GND
STBY
NC
VOUT
LOUT
AGND
ROUT
MP3RST
DOUT
MGND
MP3GND
MILP
MICS
MP3REQ
MIACK
MIDIO
MICK
MP3STB
MP3(3.3V)
DVDD(3.3V)
AVDD(3.3V)
MGND
DGND
XTCN
SCOR
SENS
XLT
DATA
XRST
CLK
M+7V
SBSY/BCKIB
SFSY/LRCKIB
TXO
VDD
CKI/CLOCK/
IRQ/FIO
VSS
PIO0/SDI2/IO0
PIO1/SDI3/IO1
PIO2/IO2
PIO3/IO3
PIO4/FI1/BUS0/IO4
PIO5/FI2/BUS1/IO5
PIO6/FI3/BUS2/IO7
PIO7/BUS3/IO7
AD4/PO04
AD3/PO03
AD2/PO02
AD1/PO01
AD0/PO00
VSS
VDD
CKO/PO13/AD16
VDDX
XO
XI
VSSX
TEST
MIMD
VSSP
VCOI
VDDP
RESET
STANBY
MICS
MILP
MIDIO
MICK
MIACK
VDDT
VSS
BCKO
LRCKO
SDO0
SDI0
BCKIA
LRCKIA
DATA
SDI1/
SDO2
CS/RAS/
AD15/CAS/
PO12
SDO3/OE
PO11/BUCK/AD14
PO10/CCE/AD13
PO9/AD12
PO08/AD11
SRMSTB
VDDT
AD10
AD9
AD8
PO07/AD7
PO06/AD6
AD5/
PO05
VDDM
WE/SDO1
AUTOMATIC
CD DSP
(LIMIT)
MOTOR/COIL
(SPINDLE)
(SLED)
+1.5V REGULATOR
MP3 DECODER
CONTROL
POWER
DRIVE
CH1OUTF
6-6. SCHEMATIC DIAGRAM – CD Board – • See page 44 for IC Block Diagrams. • See page 44 for Waveforms.
(Page 31)
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié.
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CX-JS77
2828
C715
C731
C735
C736
R711
R731
R721
R722
R723
R735
R732
R733
R734
Q731
C751
IC712
IC701
CN704
C737
R713
R712
C741
JW702
JW703
JW704
JW705
JW706
JW707
JW708
JW711
CN703
CN702
CN705
R751
C752
CN701
JW712
JW701
JW709
JW710
JW713
JW714
R701
D701
D711
R702
CN751
IC731
CN731
CN741
CN742
CN721
DRIVER BOARD
1-687-135-
12
(12)
MAIN BOARD
CN301
D
19
19
1
4
2
S711
ROTARY ENCODER
DISC TRAY
ADDRESS DETECT
2
1
SW BOARD
1-687-669-
12
(12)
SENSOR BOARD
1-687-132-
11
(11)
1-687-134-
12
(12)
MOTOR (TB) BOARD
MOTOR (LD) BOARD
1-687-133-
12
(12)
M751
(LOADING)
M
2
1
M
M741
(TABLE)
13
1
2
S751
OPEN/CLOSE
DETECT
CLOSE
OPEN
AK
EC
E
A
B
C
D
E
F
1 2 3 4 5 6 7
6-7. PRINTED WIRING BOARDS – CHANGER Section – • See page 25 for Circuit Boards Location. :Uses unleaded solder.
(Page 36)
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CX-JS77
2929
C741
R702 R701
D701
C751
C715
R713
R712 R711
D711
CN721
R722
R721
R723
C736
C735
C737
R731
C731
R733
R735
CN704
E3
E2
E1
CN703
CN742 CN702
CN741
IC731
CN751 CN705
C752 R751
CN701
CN731
Q731
M751
M741
S751
IC701
IC712
R734 R732
0.01
100 470
MTZJ-T-77
5.1A
0.01
100
16V
22k
4.7k 1k
MTZJ-T-77
3.6B
2P
4.7k
4.7k
4.7k
0.1
0.1
0.1
100
10
50V
1k
100
2P
4P
5P 5P
3P
RPI-576
2P 2P
0.1 4.7k
12P
3P
DTC114ESA
BA6956AN
BA6956AN
12k 10k
RNF RNF
TM-2
GND
TM-1
SENS-IN
SENS-OUT
GND
TM-1
TM-2
SENS-IN
SENS-OUT
GND
SENS-IN
SENS-OUT
GND
SENS-IN
SENS-OUT
GND GND
OPEN SW OPEN SW
LM-2
LM-1 LM-1
LM-2
GND
E-1
E-2
E-3
GND
VCC
OUT2
GND
VREF
OUT1
VM
FIN
RIN
VCC
OUT2
GND
VREF
OUT1
VM
FIN
RIN
LM-R
TM-R
E-1
E-2
E-3
TBL ADDRESS SENS
OPEN SW
(LOADING)
S711
DISC TRAY
ADDRESS DETECT
(TABLE)
TABLE ADDRESS SENSOR
OPEN
CLOSE
OPEN/CLOSE
DETECT
DRIVE
LOADING MOTOR
DRIVE
TABLE MOTOR
LEVEL
SHIFT
D+3.3V
CD-VM
LM-L
TM-L
6-8. SCHEMATIC DIAGRAM – CHANGER Section – • See page 44 for IC Block Diagram.
(Page 33)
http://www.xiaoyu163.com
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CX-JS77
3030
6-9. PRINTED WIRING BOARD – CDMP3 CONNECT Board – • See page 25 for Circuit Boards Location.
:Uses unleaded solder.
JW866
JW865
CN874
JW871
JW877
JW874
JW873
JW875
JW879
JW876
JW872
JW878
CN871
CN873
JR872
JR871
C871
C876
C875
C872
C874
C873
FB871
FB872
CDMP3 CONNECT BOARD
1-861-429-
11
(11)
C
PANEL BOARD
CN603
B
MAIN
BOARD
CN305
A
CD
BOARD
CN201
A
B
C
D
1 2 3 4
(Page 37)
(Page 36)
(Page 26)
http://www.xiaoyu163.com
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CX-JS77
3131
JW866
JW865
JW874
JW872
JW871
JW879
JW873
JW876
JW875
C871
C872
C873
C874
C875
C876
FB871
FB872
CN874
CN873
CN871
JW877
JW878
100p
0.01
100p
470p
0.1
0.1
0
0
9P
17P
27P
M+7V
XTCN
XLT
XRST
DATA
MP3(3.3V)
SCOR
SENS
CLK
AVDD(3.3V)
DVDD(3.3V)
M+7V
MP3-CLK
MP3-CS
MP3-LP
MP3-ACK
MP3-REQ
MP3-REST
MP3-DO
MP3-DI
XTCN
CD-DATA
CD-CLK
SENS
SCOR
XRST(REST)
XLT(CD-LAT)
NC
MP3-STB
M-GND
R-OUT
A-GND
L-OUT
D-GND
D-OUT
AVDD
DVDD
MGND
MGND
MP3STB
MP3REQ
MP3ACK
MP3CK
MP3DIO
MP3LP
MP3CS
MP3RST
MP3GND
ROUT
AGND
LOUT
DGND
DOUT
6-10. SCHEMATIC DIAGRAM – CDMP3 CONNECT Board –
(Page 27)
(Page 34)
(Page 38)
http://www.xiaoyu163.com
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CX-JS77
3232
C275
C101
C102
R198
C106 C105 R104 R103
C109R106 R107 C108
C104
C103
R197
C111
C112
C113
C114
R
281
R
282
R
283
R
284
C110
C107
C117
R109
C115
R110
C121
R113R112
C119
C122
R136 R135
C147
R134
C150
C151
C149
C148
R133
C146
C144
C143
C145
C141C142
C138 C137
C186
C187
C184
C183
C181
R170
C178
R166
C179
C177
C176
C185
R172
R169
R173
R174
C188
C190
C189
Q105
R165R163
R164
R159 R161
R160
R158
R157
R162
C175
R155
R153
Q102
R152 R156
R154
IC102
C157
C159
C160
C165
C166
C154
R137
C153
C152
R151
C191
C192
C128
C127
C124
C125
C123
R115
R177
C274
Q107
R121
C132
R129
Q106
R176
D215
R175
C206
C193
JK101
C172R146C171R145
R144
R143
R139
R138
C169
C167
R105
R108
R114
R128
R122
R130
R131
R127
R
132
Q101
Q103
Q104
R171
R167
IC101
C136
C139
C140
R168
FB205
C126
R254
R102
R101
R111
C118
R116
R117
R120
R119
R195
R194
C120
C116
C129
C135
47p
1
50V
1
50V
2.2k
0.01 220p 15k 330k
0.01330k 15k 220p
0.1
50V
0.1
50V
2.2k
1
50V
1
50V
1
50V
1
50V
2.2k
2.2k
2.2k
2.2k
10
50V
10
50V
220p
470k
0.01
330k
220p
330k470k
0.01
10
50V
4.7k 4.7k
10
50V
4.7k
0.01
0.01
0.01
0.01
4.7k
0.1
0.1
1
50V
10
50V
10
50V
10
50V
10
50V
10
50V
47
16V
0.01
47
16V
22p
47p
10k
47
16V
10k
47p
22p
10
50V
10
50V
100
100k
10k
10k
22
50V
0.01
22
50V
2SC3052
10k10k
1k
10k 10k
1k
2.2k
47k
2.2k
2.2
50V
4.7k
10k
2SA1235
10k 470k
10k
NJM4565M
1 50V
1 50V
1 50V
150V
150V
0.47
10k
0.0022
0.0022
4.7k
2.2
50V
2.2
50V
100
10V
100
10V
100p
100p
22 50V
1M
220k
47p
2SC3052
47k
47
16V
47k
2SC3052
220k
1SS355
10k
2200p
2200p
2P
470p100k470p100k
1k
1k
0
1k
150V
150V
390
390
150k
15k
220k
220k
15k
4.7k
4.7k
2SC3052
2SC5938
2SC5938
22k
22k
BD3401KS2
0.1
0.1
0.1
100k
0
0.33
100
10k
10k
150k
10
50V
100
100
1M
47k
6.8k
6.8k
220p
220p
47
16V
0.1
A1
A2
A3
A4
A5
A6
A7
A8
B2
B3
B4
B6
B7
C1
C2
C3
BD3401 CLK
BD3401 DATA
MDL
MDL
MDR
MDR
TU-L
TU-R
SAOUT
AMSOUT
ROUT
LOUT
CDR
CDL
A1
TAPEA1
TAPEA2
TAPEB1
TAPEB2
PB
N
F2
PB
N
F1
TA
P
E A
1
TAP
E A
2
TA
P
E B
1
T
AP
E B
2
R
EC
O
U
T
1
R
EC
O
U
T2
R
EC
N
F2
R
ECN
F1
ALC
SC
SI
VDD
GND
VCC
1/2VCC
FILTER
SW OUT
LF4
LF3
LF2
LF1
BBIN2
BBNF2
B
B
N
F1
B
B
IN1
V
IN
1
TO
N
E
O
U
T
1
V
IN
2
TO
N
E O
U
T
2
A
M
S
O
U
T
BN
F2
BO
UT
2
B
O
U
T1
B
N
F1
M
N
F1
M
O
U
T2
M
O
U
T
1
M
N
F2
TNF2
TNF1
SUR1
SUR2
PB
O
U
T
2
P
B
O
U
T
1
SAOUT2
SAOUT1
CAP
MIC
C
D
L
CD
R
TUNER R
TUNER L
T
AP
E R
T
AP
E L
MD L
MD R
GAME L
GAME R
LINE OUT2 (R)
LINE OUT1 (L)
VOL OUT1
VOL OUT2
(1/4)
L
R
VIDEO/MD
IN
Q101,102
MUTING
CONTROL
MUTING
LINE AMP
MUTING
MUTING
POWER ON
INPUT SELECT,
TONE CONTROL,
ELECTRICAL VOLUME
SWITCH
FEED BACK
SWITCH
FEED BACK
6-11. SCHEMATIC DIAGRAM – MAIN Section (1/4) – • See page 44 for IC Block Diagram.
(Page 34)
(Page 35)
(Page 33)
http://www.xiaoyu163.com
http://www.xiaoyu163.com
CX-JS77
3333
D212
C258 C259
R266 D214
R265D213
R353
R351
R352
Q351
Q352
R354
R358
C353
R357
C352
C351
R264
Q327
R263
R262
C253
C252
R253
R246
CN112
C265
C264
CN103
C267
C266
CN301
R347R344
R342
R341
R345
R346
R343R348
R250
R251
R249
D211
Q323
C250
R248R247
C251
C242R241C241
Q321
C244
C248
C249
Q322
R245
R356
L101
CN101
Q324
IC201
HRPE1
HP1
C342
R243
R242
C243
C2
46
R244
R252
1SS355
0.47
50V
0.22
50V
100k 1SS355
10k1SS355
47k
15k
100k
2SC3052
2SC3052
4.7k
100
2.2
50V
2.2k
22
50V
1000p
1k
2SC3052
1M
3.3k
0.1
50V
100
16V
100
100
3P
1000p
1000p
8P
1000p
1000p
12P
22k22k
1k
10k
10k
1k
22k22k
10k
10k
47k
1SS355
2SC3052
47
16V
10k10k
47
16V
0.0047101000p
2SC2001
0.015
1000p
10
50V
2SA1235
4.7k
470
11P
2SB1116
BA3126N
0.1
8.2k
27k
0.015
0.015
8.2k
0
A1
A2
A3
A4
A5
A6
A7
A8
D
1
D
2
D
3
D
4
TUNED
STEREO
CLK
DO
DI
CE
CD ENCODER
CD OPEN/CLSE
CD NO. SENS
TAPE AMS
LM-R
LM-F
TM-R
TU-MUTE
TM-F
STREAM/VACS
REC/PB
BIAS
TU-L
TU-R
SAOUT
AMSOUT
TAPEA1
TAPEA2
TAPEB2
TAPEB1
TAPEB2
TAPEB1
GND
LM-R
LM-F
TM-R
TM-F
TBL ADDRESS SENS
D+3.3V
OPEN SW
TUNED
TUNER-L
GND
TUNER-R
TU-MUTE
+9V
STEREO
LC72121 CLK
LC72121 DO
LC72121 DI
LC72121 CE
GND
CONT
GND
VCC
GND
REC SW
P/B SW
P/B SW
REC SW
(2/4)
BIAS OSC
AMS
DETECT
BIAS OSC
SWITCH
REC BIAS
SWITCH
REC/PB
REC BIAS
SWITCH
Q322,323
Q351,352
FILTER
BAND-PASS
CD-VM
E-3
E-1
E-2
ERASE
L-CH
R-CH
(REC/PB/ERASE)
L-CH
R-CH
(PB)
DECK-B
DECK-A
AM
COAXIAL
FM 75Ω
THE ASSEMBLED
BLOCK
SUPPLIED WITH
FM/AM
TUNER PACK
6-12. SCHEMATIC DIAGRAM – MAIN Section (2/4) – • See page 44 for IC Block Diagram. • See page 44 for Waveform.
(Page 32)
(Page 35)
(Page 29)
http://www.xiaoyu163.com
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CX-JS77
3434
CN307
EP101
Q312
Q305
C216
C217
C222
C235
C214
C212C213
C808
J801
FB201
FB202
FB203
FB204
CN308
M901
(FAN)
Q311
C228
C229 C230
D202
CN309
Q306
Q307Q304
R221R220
R222R216 R217
R389 R390R388R387R385 R386
R395
R391 R393
R208
R209
R212
R211
R207
R210
R206
R205
R203
R202R201
R204R223
R231
R272
R232
R392 R394
D201
D324 D325 D326
C211
CN805
C806
C807
W802
CN305
R219
R218
JW202
JW201
R227 R228
R226
R225 R229D206
Q310
D207 R230
13P
2SA953
2SA1235
0.1
0.1
0.1
0.1
1000
10V
10
50V
10
50V
0.1
0
0
0
0
3P
2SC2001
0.1
4.7
50V
47
16V
MTZJ-13B
5P
2SC5938
2SC59382SC3052
22k22k
5.6k56 56
4.7k 22k22k4.7k4.7k 22k
22k
10k 10k
1k
10k
10k
1k
2.2k
2.2k
47k
4.7k
10k
10k4.7k
10k0
2.2k
470k
10k
1k 1k
1SS355
10EDB40 10EDB40 10EDB40
2.2
50V
5P
1000p
1000p
10P
680
3W
680
3W
1k 1k
47k
4.7k 4.7k
R235
4.7
1SS355
2SC2001
1SS355 4.7k
B2
B3
B4
B6
B7
E1
E2
E3
E4
E5
E7
E8
E9
E10
E11
E12
W
FR/HP/M
IC
AC3
PROTECTOR
STK MUTE
FRON
T SP RELAY
ROUT
LOUT
CDR
CDL
L-CH
A-GND
M-GND
M+7V
D-GND
D-GND
AVDD
DVDD
N.C
SP-GND
PW-GND
A-GND
R-OUT
L-OUT
SP L-OUT
SP R-OUT
AC3
PROTECT
STK MUTE
+16V
GND
HP CTL
D GND
R-OUT
HP-GND
L-OUT
(3/4)
HP CTL
HP-GND
R-OUT
HP CTL
L-OUT
(CHASSIS)
(CHASSIS)
RELAY B+
R-CH
PHONES
B+ SWITCH
MUTING
MUTING
MUTING
Q304,305
CONTROL
FAN+
FAN-
FAN+
DRIVE
FAN MOTOR
+13V REGULATOR
6-13. SCHEMATIC DIAGRAM – MAIN Section (3/4) –
(Page 41)
(Page 31)
(Page 32)
(Page 35)
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié.
http://www.xiaoyu163.com
http://www.xiaoyu163.com
CX-JS77
3535
R310 R306
Q309
R311
Q313
R379
R380
R381
R382
R383
R384
R213
R214
D301
D302
D303
D304
R375
C373
C372
C371
R377
R376
R378
R374
R373
R372
R371
IC301
D313
C308
C311C312
C309
C313
C301
C302
D305
D306
D307
D308
C303
C304
C315
IC303
IC304
EP301
Q362
Q361
D316
R361 R362
D309
D310
Q315
Q314
R323
R324
R322
R275
C321
R321
D311
D312
C316C318
R364
C270
R274
C306
C305
C354
R273
R363
R312
C376
C374
D322
R313
C375
R307
R308
D321 R325
CN302
CN303
JW302
JW303
JW301
IC302
D315D314
C310
IC371
Q308
10k 10k
2SC3052
4.7k
2SC3052
10k
10k
10k
10k
10k
10k
1k
1k
10EDB40
10EDB40
10EDB40
10EDB40
10k
100p
100p
470p
10k
10k
10k
10k
100
100
100
TA78033LS
11EQS04
22
50V
10
50V
10
50V
22
50V
2200
25V
0.1
0.1
10EDB40
10EDB40
10EDB40
10EDB40
0.1
0.1
100
16V
TA7809S
TA7809S
2SC3052
2SA1235
1SS355
10k 2.2k
10EDB40
10EDB40
2SC3052
2SA1235
4.7k
10k
22k
0
2.2
50V
4.7k
10EDB40
10EDB40
2200
25V
100
16V
4.7k
10
50V
0
0.1
0.1
0.1
0
4.7k
22k
2.2
50V
47
16V
1SS355
4.7k
0.1
10k
2.2k
1SS355 4.7k
29P
11P
TA78033LS
3300
16V
BU2099
2SA1235
C1
C2
C3
D1
D2
D3
D4
E1
E2
E3
E4
E5
E7
E8
E9
E10
E11
E12
CD ENCODER
CD OPEN/CLSE
STEREO
TUNED
VF1
VF2
-VFL
VF1
VF2
STREAM/VACS
T
U
-M
U
T
E
T
M
-R
L
M
-R
CD NO. SENS
P
.R
E
L
A
Y
SYS MUTE
DO
CE
CLK
P.RELAY
TAPE AMS
BD3401 DATA
BD3401 CLK
FR
O
N
T
S
P
R
E
L
A
Y
STK MUTE
WFR/HP/MIC
T
M
-F
L
M
-F
PROTECTOR
-VFL
BIAS
R
E
C
/P
B
DI
S
Y
S
M
U
T
E
AC3
V
S
S
N
.C
.
D
A
T
A
C
L
O
C
K
V
D
D
Q
0
Q
1
Q
2
Q
3
Q
4
Q
5
Q
6
Q
7
Q
8
Q
9
Q
1
0
Q
1
1
O
E
S
O
L
C
H
AC3
AC4
AC3
AC4
VF1
VF2
N.C
D-GND
-VFL
EVER 10V
TUNED
LC72121 CE
LC72121 DI
CD ENCODER
M-GND
POWER RELAY
SYSTEM MUTE
STEREO
TAPE AMS
BD3401 CLK
BD3401 DATA
PROTECTOR
CD OPEN/CLOSE
D-GND
M-GND
M 9V
BU2099FV LCH
CD NUMBER SENS
VF1
VF2
3.5V(SW)
LC72121 BU2099FV CLK
WFR/HP/MIC
STREAM/VACS
LC72121 DO
BU2099FV DO
(4/4)
(CHASSIS)
O
G
I
+3.3V REGULATOR
O
G
I
+3.3V REGULATOR
O
G
I
+9V REGULATOR
O
G
I
+9V REGULATOR
B+ SWITCH
Q314,315
Q361,362
RELAY DRIVE
LOADING/
TABLE
MOTOR DRIVE
Q309,313
POWER ON
MUTING
POWER AMP
ON/OFF
STBY-RELAY
EVER+10V
D-GND
VP
6-14. SCHEMATIC DIAGRAM – MAIN Section (4/4) – • See page 50 for IC Pin Function Description.
(Page 34)
(Page 32)
(Page 33)
(Page 38)
(Page 43)
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