Sony SPP-A2770 - 2.4ghz Cordless Telephone User manual

Sony
Brand
Sony
Model
SPP-A2770 - 2.4ghz Cordless Telephone
Type
User manual
SERVICE MANUAL
CORDLESS TELEPHONE WITH ANSWERING SYSTEM
US Model
Canadian Model
SPP-A2770
Ver 1.1 2001.08
9-873-164-02 Sony Corporation
2001H0500-1 Personal Audio Company
C 2001.8 Shinagawa Tec Service Manual Production Group
SPECIFICATIONS
General
Spread method
Direct-Sequence Spread-Spectrum
Access method
FDMA-TDD
Frequency band
2.4075 - 2.4720 GHz
Operating channel
40 channels
Dial signal
Tone, 10 PPS (pulse) selectable
Supplied accessories
AC power adaptor (AC-T133)
Telephone line cord
Rechargeable battery pack (BP-T38)
Cordless handset
Power source
Rechargeable battery pack BP-T38
Battery life
Standby: Approx. 6 days
Talk: Approx. 5 hours
Battery charging time
Approx. 12 hours
Dimensions
Approx. 2
3
⁄
8
x 6
5
⁄
8
x 1
15
⁄
16
inches (w/h/d),
antenna excluded
(approx. 58 x 166 x 48 mm)
Antenna: Approx. 2
7
⁄
8
inches
(approx. 72 mm)
Mass
Approx. 8.1 oz
(approx. 230 g), battery included
Base unit
Power source
DC 9V from AC power adaptor
AC-T133
Dimensions
Approx. 6
5
⁄
8
× 3
3
⁄
8
× 7
7
⁄
8
inches (w/h/d),
antenna excluded
(approx. 167.5 × 84 × 200 mm)
Antenna: Approx. 4
3
⁄
8
inches
(approx. 108 mm)
Mass
Approx. 1 lb 1 oz
(approx. 485 g)
Answering machine
Maximum recording time
About 20 minutes (at “NORM (LONG
PLAY)” recording quality), using
incorporated IC
Greeting message
Up to one minute
Incoming message
Up to 4 minutes/message
Memo
Up to 4 minutes/message
Design and specifications are subject to
change without notice.
2
SPP-A2770
TABLE OF CONTENTS
1. SERVICING NOTES............................................... 3
2. GENERAL
Identifying the Parts ........................................................ 5
Registering additional cordless handsets........................ 8
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 10
3-2. Cabinet (Rear) ................................................................. 10
3-3. Hand Main Board ............................................................ 10
3-4. Base Cabinet (Lower) Assy ............................................ 11
3-5. Base Main Board............................................................. 11
4. TEST MODE
Base Unit ......................................................................... 12
Handset ............................................................................ 15
RF Testing ....................................................................... 17
5. ELECTRICAL ADJUSTMENTS
Base Unit ......................................................................... 19
Handset ............................................................................ 21
6. DIAGRAMS
6-1. Block Diagram – BASE UNIT Section –...................... 25
6-2. Block Diagram – HANDSET Section –........................ 26
6-3. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 27
6-4. Printed Wiring Board
– BASE MAIN Board (Component Side)– .................... 28
6-5. Printed Wiring Boards – BASE MAIN
(Conductor Side)/BASE MIC Boards – ......................... 29
6-6. Schematic Diagram – BASE MAIN Board (1/3) –....... 30
6-7. Schematic Diagram
– BASE MAIN (2/3)/BASE MIC Boards – ................... 31
6-8. Schematic Diagram – BASE MAIN Board (3/3) –....... 32
6-9. Printed Wiring Boards – BASE KEY Board –.............. 34
6-10. Schematic Diagram – BASE KEY Board – .................. 35
6-11. Printed Wiring Board – HAND MAIN Board – ........... 36
6-12. Schematic Diagram – HAND MAIN Board (1/2) – ..... 37
6-13. Schematic Diagram – HAND MAIN Board (2/2) – ..... 38
6-14. IC Pin Function Description ........................................... 39
7. EXPLODED VIEWS
7-1. Hand Set .......................................................................... 46
7-2. Base Set ........................................................................... 47
8. ELECTRICAL PARTS LIST ............................... 48
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
NOTE FOR REPLACEMENT OF THE CRYSTAL VI-
BRATOR ON THE HAND MAIN BOARD
There are two types of crystal vibrators used on the HAND MAIN
board. Accordingly, when replacing the crystal vibrator, replace
the following reference number parts together. Similarly, when
the following reference number parts are replaced, check which
type of crystal vibrator is used and use the same type.
Crystal
Ref. No. TYPE A TYPE B
vibrator
C11 18PF 33PF
X31 C12 18PF 22PF
R40 1.5kΩ 1kΩ
[How to identify the TYPE A or B of crystal vibrator]
The type A or B can be identified from the initial character of a
character staring indicated on the top surface of the parts.
TYPE A: Starting with a numeric value
TYPE B: Staring with alphabet D
Ver 1.1
3
SPP-A2770
SECTION 1
SERVICING NOTES
IF AN ERROR MESSAGE IS DISPLAYED (Handset)
If the following error message is displayed after the power was turned on, check the items where “1” is indicated.
• Note on Replacing The EEPROM
After the EEPROM was replaced, write various parameters in the “TEST MODE E” (see page 16). (For the ID, see “Writing ID Numbers”
described below)
Note: Replacing the EEPROM causes all data such as customer registered telephone directory to be cleared.
RE-REGISTERING ALREADY REGISTERED SET
Initialize the registered information on base unit and all handsets, and then register again all handsets starting with handset 1 by the
method given below. When re-registering the handset, refer to “Registering additional cordless handsets” in the instruction manual. (see
page 8)
– Base unit –
1. Turn the power on.
2. Press three keys of [1], [EZ ACCESS], and [INTERCOM] simultaneously to set the test mode.
– Handset –
1. Turn the power on.
2. Press three keys of [1], [EZ ACCESS], and [INTERCOM] simultaneously.
WRITING ID NUMBERS (for additional handsets)
The ID numbers are given in decimal notation on the bottom of base unit. If handsets are added, ID can be written in the TEST mode, but
the TEST mode handles ID numbers in hexadecimal notation, thus requiring decimal numbers to be converted into hexadecimal numbers.
Accordingly, when adding the handsets, refer to “Registering additional cordless handsets” in the instruction manual. (see page 8)
However, if the EEPROM was replaced, the handsets cannot be registered by the method mentioned above. In such a case, enter various
parameters except ID numbers in the “TEST MODE E”, and then register the handsets by the method given in the instruction manual.
Also, the ID numbers can be written in the “TEST MODE B”(decimal number) (base unit: see page 14, handset: see page 16).
ERROR=
[]
000
[][]
00
EEPROM (IC122) data error t Write correct data to the EEPROM.
ID error t Write correct ID data.
EEPROM
(IC122) error t Check the EEPROM and its peripheral circuits.
4
SPP-A2770
NOTE ON CONNECTING THE PANEL FOR SPP-A2780 FOR TEST MODE (Base Unit)
Some items in the test mode and electrical adjustments of this set require 12 keys for data writing, but this set does not provide 12 keys.
Accordingly, the panel (BASE CABINET (UPPER) ASSY) for the SPP-A2780 is connected for these items.
To connect the panel for the SPP-A2780, refer to the figure as below.
Note 1: Do not connect CN702 on the BASE KEY board for SPP-A2780 to CN301 on the BASE MAIN board of this set. If causes troubles.
Note 2: Connecting test points on the BASE MAIN board of this set and CN702 on the BASE KEY board for SPP-A2780 if not necessary when LCD
indication is not needed.
SPP-A2770
– BASE KEY BOARD (Conductor Side) –
SPP-A2780
– BASE MAIN BOARD (Component Side) –
CN703
15
13
7
1
CN702
9
TP306
8
CN302
TP301
10
11
12
13
7
TP337
TP305
TP302
TP336
TP307
5
SPP-A2770
SECTION 2
GENERAL
This section is extracted from
instruction manual.
Getting Started
28
US
Identifying the parts
Refer to the pages indicated in parentheses for details.
Base unit
1 CHARGE lamp (p. 14)
Lights while the battery is being
charged.
2 IN USE lamp (p. 32)
Lights when the handset is in use.
3 Speaker
4 ANSWER ON/OFF button
(p. 59, 60)
Turns the answering function on or
off. Lights when the answering
function is on, and flashes when a
new message is recorded.
5 REPEAT ./REVIEW button
(p. 61)
Press once to repeat the current
message or twice to go back to the
previous message.
Keep the button pressed for a
playback review of the current
message.
6 MESSAGE PLAY/STOP button
(p. 60)
Plays back recorded messages.
7 SKIP >/QUICK button (p. 61)
Press to skip to the next message.
Keep the button pressed for quick
playback of messages.
8 ERASE button (p. 24, 63)
9 MEMO REC button (p. 65)
Records a memo message.
0 VOL – button (p. 61)
Adjusts the speaker volume.
qa VOL + button (p. 61)
Adjusts the speaker volume.
qa
0
9
qs
qd
qf
qj
qh
qg
3
4
5
8
2
1
6
7
6
SPP-A2770
Getting Started
29
US
Getting Started
continued
qs Message counter (p. 60, 84)
Indicates the number of new
messages recorded. “An” appears
in the announcement only mode.
“FL” appears when there is no
space to record messages. “PF”
flashes when the power is turned
on.
qd GREETING REC button (p. 52)
Press to record a greeting.
qf GREETING PLAY button (p. 53)
Plays back a greeting.
qg DAY/TIME button (p. 22)
Press to check the current time.
qh HANDSET LOCATOR button
(p. 48)
Allows you to page the handset.
ql waw;
qk
qj MIC (microphone) (p. 52, 65)
qk Antenna (p. 12)
ql Hook for AC power adaptor
cord (p. 12)
w; DC IN 9V jack (p. 12)
wa LINE (telephone line) jack
(p. 12)
7
SPP-A2770
Identifying the parts (continued)
1 Antenna
2 Speaker
3 Display window (p. 32, 68)
4 TALK button (p. 32)
Lets you make or receive a call.
5 HOLD/PLAY button
(p. 33, 60, 64)
Puts a call on hold/plays back
recorded messages.
6 Battery compartment (p. 14)
7 CALL WAITING/FLASH button
(p. 33, 77)
Switches to a second call if you
have “call waiting” service, or lets
you make a new call.
Cordless handset
8 EZ ACCESS button (p. 23, 33)
Lets you make a call with the
registered access number.
9 Jog Dial (p. 17, 39, 69)
0 OFF button (p. 32, 38)
Allows you to disconnect the call.
qa INTERCOM button (p. 50, 51)
Lets you talk between the cordless
handsets (when the system has any
other additional cordless handsets).
qs Dialing keys (p. 32)
qd ERASE button
(p. 18, 41, 63)
1
qs
qd
2
3
4
5
6
7
8
9
0
qa
qf REPEAT . button (p. 61)
Press once to repeat the current
message or twice to go back to the
previous message.
qg TONE button (p. 33)
Allows you to switch temporarily to
tone dialing.
qh RINGER
qj I (HEADSET) jack (p. 33, 37, 78)
qk VOL (volume) switch (p. 33)
Adjust the cordless handset
volume.
ql SKIP > button (p. 61)
Press to skip to the next message.
ws
wd
qh
qj
qk
ql
w;
wa
qf
qg
w; # button (p. 75)
Used to change the number of
digits of the phone number in the
Caller ID list.
wa PGM (program) button
(p. 17, 39)
ws REDIAL/PAUSE button
(p. 24, 35)
Redials one of the last five numbers
called/inserts a pause in the dialing
sequence.
wd
MIC (Microphone)
8
SPP-A2770
Getting Started
25
US
Getting Started
RING OFFMASSAGEOLDNEW
ENTER SYSTEM ID
_
Registering additional cordless handsets
The phone system includes a cordless handset. You can expand the
system including a total of four cordless handsets. Be sure to register
the ID number of the additional cordless handset called “station
number” to the base unit before using the additional cordless handset.
The station number of the cordless handset (supplied with the base
unit) is set to 1 at the factory. The station number of the cordless
telephone newly added to the system will be one of the number 2
through 4 in the order of registration.
Before you start registering, set all the unit of the system in standby
mode and place them close to each other (within a distance of 12
inches). Then do the following procedure only on the additional
cordless handsets one bye one.
Caution
Do not register two or three cordless handsets at the same time.
Doing so may result in more than one cordless handsets having an
identical station number.
1 Press (PGM).
2 Press (INTERCOM).
You hear a confirmation beep.
within 12 inches
Base unit cordless handset
continued
9
SPP-A2770
Getting Started
26
US
3 Enter the 10 digits system ID by
pressing the dialing keys.
The system ID is shown on a sticker
affixed to the bottom of the base unit.
4 Press (PGM).
You hear a long confirmation beep and
the assigned station number is
displayed.
Notes
• Do not allow more than 60 seconds to elapse during the operation procedure.
• Once you add a cordless handset to the base unit system, you cannot change the
station numbers, or cancel the additional registrations.
• When you press any button other than (PGM) to use an unregistered cordless
handset, the message “PLEASE REGISTER THIS HANDSET” will appear on the
display, and five short error beeps will be heard. You must first register the cordless
handset you want to add to the system.
• If you try to register a cordless handset which you have already added to the system,
the five short error beeps will be heard and the registration will be canceled.
• If the registration is unsuccessful, “ERROR” will appear on the display, and five short
error beeps will be heard after (PGM) is pressed in step 4. Move all the cordless
handsets closer to the base unit, and then start over the procedure.
To check the station number assigned to the additional
cordless handset
The station number of the cordless handset appears on
the display of the cordless handset while it is seated on
the charger. You can also utilize the supplied sticker of
the station number and attaching on the cordless
handset. (For details, see Operating Instructions of
SPP-H273.)
System ID
HANDSET 2
RING OFFMASSAGEOLDNEW
Registering additional cordless handsets (continued)
SPP-A2770
10
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
3-2. CABINET (REAR)
3-3. HAND MAIN BOARD
2
two screws (BTP2.6
×
12)
4
two claws
1
lid, battery case
5
cabinet (rear)
3
two claws
2
three screws
(BTP2.6
×
8)
4
3
7
HAND MAIN boar
d
6
button (VOL. H)
5
cover (antenna. H)
cover (head set jack)
1
connector
(CN1)
Set
Cabinet (rear) Hand Main Board
Base Cabinet (lower) Assy Base Main Board
SPP-A2770
11
3-4. BASE CABINET (LOWER) ASSY
3-5. BASE MAIN BOARD
1
four screws (BTP3
×
10)
4
connector
(CN172)
2
5
base cabinet (lower) assy
3
three connectors
(CN301, 302, 303)
2
four screws (BTP2.6
×
8)
3
BASE MAIN board
1
two solders
12
SPP-A2770
2. TEST MODE C (TX Power Measurement Mode)
In the test mode idling status, press the [GREETING REC] key to
active this mode and display “–C”.
1. In the “–C” status, press the [REPEAT ] key to active the
TX power measurement mode and transmit the single carrier
continuously.
2. In this status, setting can be changed by entering the following
keys (not displayed).
[REPEAT ] : Select main antenna
[SKIP ] : Select sub antenna
[GREETING PLAY] : Select channel 5
[DAY/TIME] : Select channel 28
[ANSWER ON/OFF] : Select channel 50
3. TEST MODE F (DSP Control Mode)
In the test mode idling status, press the [GREETING PLAY] key
to active this mode and display “–F”.
3-1. ICM Recording Path Mode
In the “–F” status, press the [REPEAT ] key to active the ICM
recording path mode. In this mode, it operates as follows.
• ICM recording path setting
• DTMF monitor
When receive DTMF, it displays corresponded number to the
received DTMF
• CPT detection
When detect busy tone (400 Hz) or stutter tone, it lights up the
[IN USE] LCD.
3-2. Line Playback Path Mode
In the “–F” status, press the [SKIP ] key to active the line
playback path mode. In this mode, it operates as follows.
• Line playback path setting
3-3. Recording Test
Note: Execute this test after setting the path in “3-1. ICM Recording Path
Mode”.
In the “–F” status, press the [MEMO REC] key to active the re-
cording test. In this mode, it operates as follows.
• VOX detection
When detect receiving signal from the line, it lights up the
[ANSWER ON/OFF] LED.
Note: When receiving signal is single tone, attenuator becomes active.
Therefore use the input signal is voice signal or burst signal of sine
wave (1.2 kHz).
3-4. Playback Test
Note: Execute this test after setting the path in “3-1. ICM Recording Path
Mode”.
In the “–F” status, press the [MESSAGE PLAY/STOP] key to
active the playback test. In this mode, it operates as follows.
• Playback test
Playback the recorded signal by “3-3. Recording Test”.
3-5. Speaker Path Test 1
In the “– F” status, press the [GREETING REC] key to active the
speaker path test 1. In this mode, it activates phone line path when
IC402 pin 0 (MIC GAIN CONT) is “L” and IC402 pin uj (H/S
TALK GAIN CONT) is “H”.
3-6. Speaker Path Test 2
In the “–F” status, press the [GREETING PLAY] key to active the
speaker path test 2. In this mode, it activates phone line path when
IC402 pin 0 (MIC GAIN CONT) is “H” and IC402 pin uj (H/S
TALK GAIN CONT) is “L”.
In this mode, it operates as follows.
• When the [VOL +] key is pressed, it outputs the DTMF “5”.
• When the [ANSWER ON/OFF] key is pressed, it outputs the
DP “0”.
SECTION 4
TEST MODE
.
>
.
>
.
BASE UNIT
Note:
The test mode in this set includes the test items that use normal set
only, and the test items that need the panel (BASE CABINET (UP-
PER) ASSY) to be replaced with that for the SPP-A2780.
Items that use normal set only (Test case 1)
• TSET A
• TSET C
• TSET F
• Erase
Items that use the panel for SPP-A2780 (Test case 2)
• TSET D
• TSET E
– TEST CASE 1 –
(Items that use normal set only)
[ENTERING THE TEST MODE]
1. Turn the power on.
2. Press three keys of [GREETING REC], [HANDSET LOCATOR],
and [ERASE] simultaneously.
3. When the test mode becomes active, the message counter dis-
plays “–0” along with an acknowledged tone. (Idling status of
test mode)
4. Pressing either key in the following table causes the mode as-
sociated with the pressed key to be activated.
Key Mode Items
[MEMO REC] TEST A Manufacturing mode
[GREETING REC] TEST C Electrical adjustment mode
[GREETING PLAY] TEST F DSP control mode
[ERASE] Erase Initialize the EEPROM
5. To return the idling status, press the [VOL --] key.
[RELEASING THE TEST MODE]
Disconnect the power.
[DETAIL OF EACH MODE]
1. TEST MODE A (Manufacturing mode)
In the test mode idling status, press the [MEMO REC] key to ac-
tive this mode and display “–A”.
Key Test
1. In the “–A” status, press the [MEMO REC] key to active the
key test.
2. Press the key following order.
[ANSWER ON/OFF]t[REPEAT ]t[MESSAGE PLAY/
STOP] t [SKIP ] t [VOL +] t [VOL --] t
[MEMO REC] t [ERASE] t [GREETING REC] t
[GREETING PLAY]t[DAY/TIME]t[HANDSET LOCA-
TOR]
3. When this test finished, a completion tone is generated and
the base unit returns to the initial test mode “–A” and waits for
a command.
Also, pressing the keys in wrong order causes the set to be
returned to the initial status.
.
>
13
SPP-A2770
[DETAIL OF EACH MODE]
5. TEST MODE D (RF Control Mode)
In the test mode idling status, press the [4] key to active this mode
and display “TEST D”.
In this mode, TX power level, TX power on/off, bit error late (fixed
at OF), channel number, LQ, mode, RSSI and RXST are displayed
on the LCD as below. Each setting can be changed by entering the
following keys. (default: TX on, master mode)
[1] : Lowers the channel
[3] : Raises the channel
[4] : Turns on/off the TX
[6] : Switches the mode to master/slave
[7] : Switches the TX power to Lo/ML/MH/Hi
[9] : Switches the antenna to main/sub (not displayed)
6. TEST MODE E (EEPROM Read/Write Mode)
In the test mode idling status, press the [5] key to active this mode
and display as below.
[]: hexadecimal number (initial values are all blank)
Refer to following table for key assignment.
Key Assignment
[0] to [9] input 0 to 9
[EZ ACCESS] input A
[REDIAL/PAUSE] input B
[CALL WAITING/FLASH] input C
[INTERCOM] input D
[HOLD] input E
[SPEAKERPHONE] input F
[PROGRAM] check sum
[#] enter
[*] reset
Enter the data associated with each address by referring to the
“EEPROM data” in the following table.
Writing procedure:
1. Input the address number (3 digit) of EEPROM.
2. Press the [#] key to enter the address number and display read
data (8 digit=4 byte).
3. If rewrite the data, input the rewriting data (8 digit=4 byte).
4. Press the [#] key to enter the rewriting data.
5. To release this mode, press the [VOL --] key.
6. To return the idling status, press the [OFF] key.
4. INITIALIZE THE EEPROM
In the test mode idling status, EEPROM (IC303) and Flash memory
(IC403) are all cleared except VP setting value when the [ERASE]
key is pressed.
When execute this operation, it erases stored data (phone dictio-
nary, caller ID, message data).
– TEST CASE 2 –
(Items that use the panel for SPP-A2780)
[ENTERING THE TEST MODE]
1. Remove the panel for this set.
2. Connect the panel for SPP-A2780 as below.
Note: Refer to “Note on Connecting the Panel for SPP-A2780 for Test
Mode” in the Servicing Notes. (page 4)
3. Turn the power on.
4. Press three keys of [2], [6], and [ERASE] simultaneously.
5. When the test mode becomes active, the LCD displays as be-
low along with an acknowledged tone. (Idling status of test
mode)
6. Pressing either key in the following table causes the mode as-
sociated with the pressed key to be activated.
Key Mode Items
[4] TEST D RF control mode
[5] TEST E EEPROM read/write mode
[7] TEST B Writing the ID numbers
7. To return the idling status, press the [VOL --] key.
[RELEASING THE TEST MODE]
Disconnect the power.
SPP-A2780 BASE KEY board
(in the panel)
15 pin
7 lead wires
CN702
CN703
test points
CN302
SPP-A2770
BASE MAIN board
JK DSP=V3 0425to
FONT=NEW
A2770
display example
PW=Hi TXON BR=0F
CH=15 LQM=3F Mst
RSSI=3F STS=1101
display example
EEPROM ADRS=
[][][]
Read Dt=
[][][][][][][][]
WriteDt=
[][][][][][][][]
display example
14
SPP-A2770
IF a wrong ID number was entered by mistake, press the [VOL--]
key to return to the test mode idling status, then re-enter correct
ID number.
EEPROM data:
Address Data (hexadecimal)
(hexadecimal) 1st byte 2nd byte 3rd byte 4th byte
754 (ID1) (ID2) F6 (C-sum)
714 81 01 00 (C-sum)
718 03 05 0C (C-sum)
71C C2 C0 00 (C-sum)
720 A9 3D 1C (C-sum)
724 48 C7 04 (C-sum)
728 50 03 51 08
72C 52 08 54 0D
730 5A 06 5D 02
734 60 0B 66 0F
738 70 07 FF 83
73C FF FF FF (C-sum)
740 FF FF FF (C-sum)
744 FF FF FF (C-sum)
690 90 E8 2A (C-sum)
694 6A AA 01 (C-sum)
794 01 00 00 (C-sum)
Contents of EEPROM data:
Address Data (hexadecimal)
(hexadecimal) 1st byte 2nd byte 3rd byte 4th byte
754 ID1 ID2 RF parameter C-sum
714 reserved C-sum
718 audio parameter RF parameter C-sum
71C reserved C-sum
720 RF parameter C-sum
724 audio parameter C-sum
728
72C
730 RF parameter
734
738
73C C-sum
740 reserved C-sum
744 C-sum
690
audio parameter
C-sum
694 C-sum
794 H-No. reserved C-sum
Note:
ID1, ID2 : ID numbers in hexadecimal notation (refer to “7. TEST MODE
B”)
C-sum : Check sum value (After entering the data up to 3 bytes, press
the [PROGRAM] key to start automatic calculation.)
H-No. : Number of registered handset
7. TEST MODE B (Writing the ID number)
Note: Though the “TEST MODE E” handles the ID numbers as hexa-
decimal numbers, the “TEST MODE B” handles them as decimal
numbers. Both are different in numerical notation format only, and
net values are same.
The ID numbers written on the bottom of base unit are decimal
numbers, and accordingly use the “TEST MODE B” when enter-
ing the ID numbers.
In the test mode idling status, press the [7] key to active this mode
and display as below.
*: Already registered ID number
[]: Inputted ID number (initial values are all blank)
TEST B 224******
ID=224
[][][][][][]
display example
15
SPP-A2770
HANDSET
[ENTERING THE TEST MODE]
1. Connect the power.
2. Press three keys of [2], [6], and [ERASE] simultaneously.
3. When the test mode becomes active, the LCD displays as be-
low along with an acknowledged tone. (Idling status of test
mode)
4. Pressing either key in the following table causes the mode as-
sociated with the pressed key to be activated.
Key Mode Items
[1] TEST A Manufacturing mode
[3] TEST C Electrical adjustment mode
[4] TEST D RF control mode
[5] TEST E EEPROM read/write mode
[7] TEST B Writing the ID numbers
[ERASE] Erase Initialize the EEPROM
5. To return the idling status, press the [OFF] key.
[RELEASING THE TEST MODE]
Disconnect the power.
[DETAIL OF EACH MODE]
1. TEST MODE A (Manufacturing mode)
In the test mode idling status, press the [1] key to active this mode
and display “TEST A”.
1-1. Key Test
1. In the “TEST A” status, press the [1] key to active the key test
and display “TEST A KEY”.
2. Press the key following order.
[TALK]t[OFF]t[HOLD]t[INTERCOM]t [1]t[2]t
[3]t[4]t[5]t[6]t[7]t[8]t[9]t[*]t[0]t[#]t
[CALL WAITING/FLASH]t [EZ ACCESS]t [ERASE]t
[REDIAL/PAUSE]t[PGM]
3. When this test finished, a completion tone is generated and
the base unit returns to the initial test mode “TEST A” and
waits for a command.
Also, pressing the keys in wrong order causes the set to be
returned to the initial status.
1-2. Jog Test
1. In the “TEST A” status, press the [2] key to active the jog test
and display as below.
2. In this test mode, rotate the jog dial up/down or press the jog
dial to respective status will be displayed on the LCD as fol-
lows.
JK 0425to
FONT=NEW
A2770
display example
TEST A JOG
UP
display example
Up the jog dial : “UP” is displayed on the second line.
Down the jog dial : “DN” is displayed on the second line.
Press the jog dial : “P” is displayed on the second line.
1-3. LCD and LED Test
In the “TEST A” status, press the [3] key to active the LCD and
LED test and display as below along with the LCD back light and
key illumination LED blink alternately.
Note: “NEW”/“MESSAGE” and “OLD”/“RING OFF” blink alternately
2. TEST MODE C (TX Power Measurement Mode)
In the test mode idling status, press the [3] key to active this mode
and display “TEST C”.
1. In the “TEST C” status, press the [1] key to active the TX
power measurement mode and transmit the single carrier con-
tinuously.
2. In this status, setting can be changed by entering the following
keys (not displayed).
[1] : Set TX power to middle/low
[3] : Set TX power to high
[7] : Select channel 5
[8] : Select channel 28
[9] : Select channel 50
3. TEST MODE D (RF Control Mode)
In the test mode idling status, press the [4] key to active this mode
and display “TEST D”.
In this mode, TX power level, TX power on/off, bit error late (fixed
at OF), channel number, LQ, mode, RSSI and RXST are displayed
on the LCD as below. Each setting can be changed by entering the
following keys. (default: TX on, slave mode)
[1] : Lowers the channel
[3] : Raises the channel
[4] : Turns on/off the TX
[6] : Switches the mode to master/slave
[7] : Switches the TX power to Lo/ML/MH/Hi
display
[NEW][OLD][MESSAGE][RING OFF]
PW=Hi TXON BR=OF
CH=15 LQM=3F Slv
RSSI=3F STS=1101
display example
16
SPP-A2770
Contents of EEPROM data:
Address Data (hexadecimal)
(hexadecimal) 1st byte 2nd byte 3rd byte 4th byte
004 ID1 ID2 RF parameter C-sum
0E0 C-sum
008 C-sum
00C C-sum
010 C-sum
014 RF parameter C-sum
018 C-sum
01C C-sum
020 C-sum
024 C-sum
0D8 OWN-No. H-No. M-No. C-sum
Note:
ID1, ID2 : ID numbers in hexadecimal notation (refer to “5. TEST MODE
B”)
C-sum : Check sum value (After entering the data up to 3 bytes, press
the [PROGRAM] key to start automatic calculation)
OWN-No. : Self number of handset
H-No. : Number of registered handset
M-No. : Number of model destination (SPP-A2770: 40h)
5. TEST MODE B (Writing the ID number)
Note: Though the “TEST MODE E” handles the ID numbers as hexa-
decimal numbers, the “TEST MODE B” handles them as decimal
numbers. Both are different in numerical notation format only, and
net values are same.
The ID numbers written on the bottom of base unit are decimal
numbers, and accordingly use the “TEST MODE B” when enter-
ing the ID numbers.
In the test mode idling status, press the [7] key to active this mode
and display as below.
*: Already registered ID number
[]: Inputted ID number (initial values are all blank)
IF a wrong ID number was entered by mistake, press the [OFF]
key to return to the test mode idling status, then re-enter correct
ID number.
6. INITIALIZE THE EEPROM
In the test mode idling status, EEPROM (IC122) is all cleared
except VP setting value when the [ERASE] key is pressed.
When execute this operation, it erases stored data (phone dictio-
nary, caller ID, message data).
TEST B 224******
ID=224
[][][][][][]
display example
4. TEST MODE E (EEPROM Read/Write Mode)
In the test mode idling status, press the [5] key to active this mode
and display as below.
[]: hexadecimal number (initial values are all blank)
Refer to following table for key assignment.
Key Assignment
[0] to [9] input 0 to 9
[HOLD] input A
[INTERCOM] input B
[CALL WAITING/FLASH] input C
[EZ ACCESS] input D
[ERASE] input E
[REDIAL/PAUSE] input F
[PGM] check sum
[#] enter
[*] reset
Enter the data associated with each address by referring to the
“EEPROM data” in the following table.
Writing procedure:
1. Input the address number (3 digit) of EEPROM.
2. Press the
[#] key to enter the address number and display read
data (8 digit=4 byte).
3. If rewrite the data, input the rewriting data (8 digit=4 byte).
4. Press the [#] key to enter the rewriting data.
5. To release this mode, press the [OFF] key.
EEPROM data:
Address Data (hexadecimal)
(hexadecimal) 1st byte 2nd byte 3rd byte 4th byte
004 (ID1) (ID2) F6 (C-sum)
0E0 A9 3D 1C FD
008 50 03 51 08
00C 52 08 54 0D
010 5A 06 5D 02
014 60 0B 66 0F
018 70 07 FF 83
01C FF FF FF FF
020 FF FF FF FF
024 FF FF FF FF
0D8 01 01 40 (C-sum)
EEPROM ADRS=
[][][]
Read Dt=
[][][][][][][][]
WriteDt=
[][][][][][][][]
display example
17
SPP-A2770
RF TESTING
This test is for checking the RF system without disassembling the
set in servicing. Perform measurement using the spectrum ana-
lyzer and jig antenna.
Note:
To perform the RF testing, prepare the panel (BASE CABINET
(UPPER) ASSY) for SPP-A2780, and use it connecting the panel for
SPP-A2780. (Refer to page 4)
RF Testing method:
Please follow the below instruction to perform RF test.
For the detail of test mode, Refer to the each items of “BASE
UNIT” section and “HANDSET” section.
1. TRANSMISSION CHECK
1-1. Setting
Connect a receiving antenna to RF INPUT of Spectrum analyzer
and set the unit 10 cm (4 inches) away from the receiving antenna.
Measuring tool: Spectrum analyzer (equivalent to HP8595E)
Jig : Receiving antenna (for Spectrum analyzer)
1-2. Transmission Waveform Check
Purpose:
It is necessary to check spectrum wave of transmission wave which
is an important factor in order to confirm operational performance
of Spread Spectrum models. If this wave deviates from correct
wave form, normal data transmission cannot be made and, as a
result of that, possibility that occurrence of mute increases and
communication distance becomes shorter will increase.
Spectrum analyzer setting:
Center frequency: 2440.5 MHz
Span : 10 MHz
RBW : 100 kHz
VBW : 100 kHz
Ref Level : 0 dBm
ATT : 10 dB
Jig antenna
(Utilize the antenna for handset)
Spectrum
analyzer
10 cm
Spectrum
analyzer
10 cm
Test mode setting:
– Base Unit –
1. Press three keys of [2], [6], and [ERASE] simultaneously to
enter the test mode.
2. Press the [4] key to activate test mode D and display “TEST
D”. (TX on)
3. Press the [1] or [3] key to change the channel to 28.
– Handset –
1. Press three keys of [2], [6], and [ERASE] simultaneously to
enter the test mode.
2. Press the [4] key to activate test mode D and display “TEST
D”. (TX on)
3. Press the [6] key to set master.
4. Press the [1] or [3] key to change the channel to 28.
Test mode setting is complete, check that the waveform on spec-
trum analyzer is displayed as below.
Measuring:
1. Maximum hold the waveform.
2. Set the maker to the peak of waveform with the Peak Search
function.
3. Measure the frequency width of points 6 dB and 20 dB lower
from the peak with the Delta Marker function. (refer to below
figure)
Specifications:
A (width of –6 dB points) : more than 1.4 MHz
B (width of –20 dB points) : more than 1.8 MHz
REF 0.0 dBm
10dB/
CENTER 2.44050 GHz
*RBW 100 kHz *VBW 100 kHz *ATT 10dBSWP 20 ms
SPAN 10.00 MHz
A_View B_Blank NormNorm
REF 0.0 dBm MK∆ –510 kHz
10dB/ A_View B_Blank Norm –5.44 dBPosi
DELTA MKR
– 510 kHz
CENTER 2.44050 GHz
*RBW 100 kHz *VBW 100 kHz *ATT 10dBSWP 20 ms
SPAN 10.00 MHz
PEAK
–6dB
–20dB
A
B
Ver 1.1
18
SPP-A2770
1-3. TX Power Check
Spectrum analyzer setting:
Center frequency: 2440.5 MHz
Span : 10 MHz
RBW : 3 MHz
VBW : 1 MHz
Ref Level : 0 dBm
ATT : 10 dB
Test mode setting:
– Base Unit –
1. Press three keys of [2], [6], and [ERASE] simultaneously to
enter the test mode.
2. Press the [4] key to activate test mode D and display “TEST
D”. (TX on, main antenna)
3. Press the [1] or [3] key to change the channel to 28.
– Handset –
1. Press three keys of [2], [6], and [ERASE] simultaneously to
enter the test mode.
2. Press the [4] key to activate test mode D and display “TEST
D”. (TX on)
3. Press the [6] key to set master.
4. Press the [1] or [3] key to change the channel to 28.
Test mode setting is complete, check that the waveform on spec-
trum analyzer is displayed as below.
Measuring:
– Base Unit –
1. Maximum hold the waveform. (refer to below figure)
2. Set the maker to the peak of waveform with the Peak Search
function and read that value. (main antenna)
3. Press the
[9] key to switch the antenna mode to “sub”.
4. Set the maker to the peak of waveform with the Peak Search
function and read that value. (sub antenna)
– Handset –
1. Maximum hold the waveform. (refer to below figure)
2. Set the maker to the peak of waveform with the Peak Search
function and read that value. (TX power: Hi)
3. Press the [7] key twice to switch the TX power level to “ML”.
4. Set the maker to the peak of waveform with the Peak Search
function and read that value. (TX power: ML)
REF 0.0 dBm
10dB/
CENTER 2.44050 GHz
*RBW 3 MHz *VBW 1 MHz *ATT 10dBSWP 20 ms
SPAN 10.00 MHz
A_View B_Blank NormNorm
Specifications: (peak level of waveform)
– Base Unit –
Main antenna mode: more than –30 dBm
Sub antenna mode : more than –30 dBm
– Handset –
TX power level is Hi : more than –30 dBm
TX power level is ML: more than –40 dBm
2. RECEIVING CHECK
2-1. Setting
Put two units of the base unit and handset nearby. (on the one
desk)
2-2. Link check of Between Base Unit and Handset
Procedure:
1. Press three keys of
[2], [6], and [ERASE] on the base unit
simultaneously to enter the test mode, and press the [4] key to
activate test mode D and display “TEST D”.
Perform this process for the handset at the same manner to
activate test mode D and display “TEST D”.
(base unit: master mode, handset: slave mode)
2. Check the display of LCD on both base unit and handset.
“STS=0011” is displayed when the base unit and handset are
linked normally.
Display:
STS=0011: OK
STS=1x0x: NG (x: 0 or 1)
3. Press the [6] keys of base unit and handset to switch modes.
(base unit: master mode → slave mode, handset: slave mode
→ master mode)
4. In this status (master/slave relation of base unit and handset is
reversed), check the display of LCD on both base unit and
handset as same as step 2.
Display:
STS=0011: OK
STS=1x0x: NG (x: 0 or 1)
REF –10.0 dBm MKR 2.44076 GHz
10dB/
CENTER 2.44050 GHz
*RBW 3 MHz *VBW 1 MHz *ATT 10dBSWP 20 ms
SPAN 10.00 MHz
A_View B_Blank Norm –14.52 dBmPosi
MARKER
2.44076 GHz
Ver 1.1
19
SPP-A2770
4. C-ID Input Level Measurement
Setting:
Procedure: (Use the panel for normal set)
1. Connect equipments as the figure above.
2. In the test mode idling status, press the [GREETING PLAY]
key to display “–F”.
3. Set the output level of audio analyzer to –17 dBm (1.2 kHz,
LPF=30 kHz ON).
4. Check that the value of audio analyzer is –15 to –21 dBm.
5. Between Microphone and Line Signal Level
Measurement
Setting:
Procedure: (Use the panel for normal set)
1. Connect equipments as the figure above.
2. In the test mode idling status, press the
[GREETING PLAY]
key to display “–F”, and press the [GREETING REC] key to
set the speaker path test 2 mode.
3. Set the output level of audio analyzer to –27 dBm (1.2 kHz,
LPF=30 kHz ON).
4. Check that the value of audio analyzer is –2 to –8 dBm.
SECTION 5
ELECTRICAL ADJUSTMENTS
0 dBm = 0.775 V
BASE UNIT
• Make the set in the test mode. (See page 12)
Note:
The test mode in this set includes the test items that use normal set
only, and the test items that need the panel (BASE CABINET (UP-
PER) ASSY) to be replaced with that for the SPP-A2780. (Refer to
page 4)
Items that use normal set only (Test case 1)
• TSET A
• TSET C
• TSET F
• Erase
Items that use the panel for SPP-A2780 (Test case 2)
• TSET D
• TSET E
1. Power Failure Test
Procedure: (Use the panel for normal set)
1. Connect between TP338 and TP306 (GND) on the BASE
MAIN board by lead wire.
2. In the test mode idling status, press the [MEMO REC] key to
display “–A”.
3. Check that the [ANSWER ON/OFF] LED on the base unit lights
up when connect between TP203 and TP306 (GND) on the
BASE MAIN board.
2. Ring Detection Test
Procedure: (Use the panel for normal set)
1. In the “–A” status, connect the base unit to telephone line.
2. Check that the
[IN USE] LED on the base unit lights up when
call the base unit.
3. Charge Current and CHARGE LED Test
Setting:
Procedure: (Use the panel for normal set)
1. Connect equipments as the figure above.
2. In the “–A” status, check that the value of digital voltmeter is
5.6 to 5.8 V and the [CHARGE] LED on the base unit lights
up.
Base unitfeeding bridge
Trunk
Line
Line
Input
TP101
TP102
TP413
TP306 (GND)GND
Output
audio analyzer
1.2 kHz, –27 dBm
LPF: 30 kHz ON
Base unitdigital voltmeter
–
+
charge terminal
+
47 Ω/1W
charge terminal
–
10 µF
Base unitfeeding bridge
Trunk
Line
Line
Output
TP101
TP102
TP475
TP306 (GND)GND
Input
audio analyzer
1.2 kHz, –36 dBm
LPF: 30 kHz ON
600 Ω
+
20
SPP-A2770
8. Between Line and Speaker in The Handset Signal
Level Measurement
Setting:
Procedure: (Use the panel for SPP-A2780)
1. Connect equipments as the figure above.
2. Set the base unit to test mode, press the [4] key of the base
unit to display “TEST D”. (TX on, master mode)
3. Set the handset to test mode, then press the [4] key of the
handset to display “TEST D”, and press the [4] key to set TX
off. (slave mode)
4. Check that the value of audio analyzer is –10 to –16 dBm.
9. RX Current Measurement
Setting:
Procedure: (Use the panel for SPP-A2780)
1. Connect equipments as the figure above.
2. Set the base unit to test mode, press the
[4] key of the base
unit to display “TEST D”, and press the [4], [6] keys to set TX
off and slave mode.
3. Set the handset to test mode, then press the [4] key of the hand-
set to display “TEST D”, and press the [6] key to set master
mode. (TX on)
4. Check that the value of ammeter is 310 to 410 mA.
6. Between Line and Speaker Signal Level Measure-
ment
Setting:
Procedure: (Use the panel for normal set)
1. Connect equipments as the figure above.
2. In the test mode idling status, press the
[GREETING PLAY]
key to display “–F”, and press the [GREETING REC] key to
set the speaker path test 1 mode.
3. Set the output level of audio analyzer to –27 dBm (1.2 kHz,
LPF=30 kHz ON).
4. Check that the value of audio analyzer is –2 to –8 dBm.
7. Between Microphone in The Handset and Line
Signal Level Measurement
Setting:
Procedure: (Use the panel for SPP-A2780)
1. Connect equipments as the figure above.
2. Set the base unit to test mode, press the
[4] key of the base
unit to display “TEST D”, and press the [4], [6] keys to set TX
off and slave mode.
3. Set the handset to test mode, then press the [4] key of the
handset to display “TEST D”, and press the [6] key to set master
mode. (TX on)
4. Check that the value of audio analyzer is –3 to –9 dBm.
+9 V
regulated dc
power supply
Handset
Base unit
RF271
TP201
TP202
–
+
RF61
A
100 µF
100 µF
Base unitfeeding bridge
Trunk
Line
Line
Input
TP101
TP102
TP476
TP477 (SP GND)GND
Output
audio analyzer
1.2 kHz, –27 dBm
LPF: 30 kHz ON
16 Ω
Base unitfeeding bridge
Trunk
Line
Line
Output
TP101
TP102
RF271
Input
audio analyzer
1.2 kHz, –37 dBm
LPF: 30 kHz ON
600 Ω
TP5
TP6
(MIC GND)
RF61
Handset
Base unitfeeding bridge
Trunk
Line
Line
Input
TP101
TP102
RF271
Output
audio analyzer
1.2 kHz, –17 dBm
LPF: 30 kHz ON
150 Ω
TP3
TP4
(MIC GND)
RF61
Handset
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Sony SPP-A2770 - 2.4ghz Cordless Telephone User manual

Sony
Brand
Sony
Model
SPP-A2770 - 2.4ghz Cordless Telephone
Type
User manual
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