3-8
D
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Focus ON OK?
Track On OK?
Disc is play?
E
Proper
signals on A, B, C,
D of MT1336
Check connections between
MT1336 and pick-up head.
Proper FEO signal
on MT1336?
Proper FEO signal
on MT1336?
Check the related circuit
on MT1336 FEO sugnal .
Check the related
circuit on MT1336
Properly TRSO signal
on MT1379?
T+ & T- output
properly?
Check the TRSO connection
on MT1379 and motor dirver.
Check the tracking control
amp circuit on motor driver.
Check cable connection on
pick-up head.
Check RF signal waveform.
Check FEO connection
between MT1336 and MT1379
Summary of Contents for SD-4900
Page 1: ...SERVICE MANUAL DVD VIDEO PLAYER FILE NO 810 200327 DOCUMENT CREATED IN JAPAN Jul 2003 SD 4900 ...
Page 69: ......
Page 72: ...3 33 3 34 3 RF SERVO CIRCUIT DIAGRAM CD DVD LD will not on 02 12 26 R14601A TOSHIBA ...
Page 77: ...3 43 3 44 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE 5600AD ...
Page 78: ...3 45 3 46 2 KEY P C BOARD 3 TIMER P C BOARD LOCATION GUIDE Solder Side Solder Side ...
Page 85: ......
Page 87: ......
Page 102: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...