SERVICE MANUAL
DATA
COMPACT DISC
STEREO SYSTEM
BASIC TAPE MECHANISM : ZZM-3 PR3NM
BASIC CD MECHANISM : BZG-5 ZD3GNM
NSX-R50
NSX-R51
K
EZ
S/M Code No. 09-01A-449-7N1
• If requiring information about the CD mechanism, see Service Manual of
BZG-5, (S/M Code No. 09-00C-353-3N6).
SPEAKERSYSTEM
CX-NR50
RC-CAS01
CD
CASSEIVER
REMOTE
CONTROLLER
SX-NR50
NSX-R50
NSX-R51 CX-NR51
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CD TEST MODE
1. Starting CD Test Mode
Insert the AC plug while pressing and holding down the CD OPEN/CLOSE button.
When the test mode is activated, the display appears TEST.
2. Exiting CD Test Mode
Press the POWER button or unplug the AC plug.
3. CD Test Mode Buttons and Functions
No Mode Buttons Display Operation Details
1 Start Mode All lit. All FL lit. FL check
Microcomputer check
2 Search Mode STOP button READING LD continuously lit. APC circuit check
Continuous focus search *1 Laser current electricity
measurement
Spindle motor continuous kick Focus search waveform check
Focus error waveform check
(DRF is ignored during search
mode.)
3 Play Mode PLAY button NORMAL Normal playback Servo circuits check
Focus search continued if DRF check
TOC READ is unavailable.
4 Traverse Mode PAUSE button NORMAL Tracking servo OFF/ON Tracking balance check
OFF/ON repeated every time the
PAUSE button is pressed.
5 Sled Mode FF button CD TEST PU moves the inner track *2, and Sled circuit check
lens is kicked to the inner track. Tracking circuit check
Mechanism function check
PU check
FWD button CD TEST PU moves to the outer track *2,
and lens is kicked to the outer
track.
6 Spindle Mode REC/REC All lit. When the button is pressed at Spindle circuit check
MUTE button first, spindle motor rotates in the Spindle motor check
FWD direction (at rough speed).
At the second press, the direction
is reversed. At the third press, the
mode stops.
*1 When the focus search mode is repeated more than 10 minutes, the driver IC may generate heat, activating the protection
circuit to stop operation. In this case, turn off the power, leave the unit for a while, and then, restart.
*2 When the pickup is positioned at the innermost track or the outermost track, and the FF button and the RWD button are
pressed down, the sled motor rotates. Therefore, observe gear to avoid damage.
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