
3-7
14. CD PART
YES
Check R730,R731
Check Open/Close
YES
Check “READING” display
Check CN703
Check CN703
YES
Turn on CD
YES
Check Reading OK
Check pickup movement
YES
Check U704 BA5927FM
YES
Check U703
YES
YES
Playing, check audio output
Check U703 pin55, 57
OK
NO
Check JK500/JK501
pin34(Open 3.3V Close 0V)
NO
NO
NO
NO
15. CD READING CHECK
NO
YES
Check CN723 pin6, 7
(SL+,SL-)
Check Connector locking
CN703, CN723
Does sled motor move?
YES
NO
Does the laser move?
YES
NO
Defective pickup or
U703, U704
YES
NO
Defective pickup or
U703, U704
Check CN703 pin1, 2
(F+,F-)
YES
NO
Does laser light?
YES
NO
Defective pickup or Q701
Check CN703 pin19
(LD)
YES
NO
Does the spindle motor
rotate?
YES
NO
Defective pickup or
U703, U704
Check CN723 pin8, 9
(SP+, SP-)
YES
Is reading ok?
NO
Defective pickup or
U703, U704
Check CN703 pin3, 4
(T+, T-)
NO
Содержание SB74
Страница 9: ...2 3 2 4 ...
Страница 11: ...2 6 ...
Страница 25: ...3 14 WIRING DIAGRAM JK500 3P 13P CN501 CON2 2P SPK 2P 5P 8P 5P 3P CN580 24P 9P ...
Страница 26: ...3 15 BLOCK DIAGRAM ...
Страница 27: ...3 16 ...
Страница 34: ...PRINTED CIRCUIT BOARD DIARGAMS 1 1 MAIN P C BOARD DIAGRAM TOP VIEW 3 29 3 30 ...
Страница 35: ...1 2 MAIN P C BOARD DIAGRAM BOTTOM VIEW 3 31 3 32 ...
Страница 37: ...3 1 MCU9800 P C BOARD DIAGRAM TOP VIEW 3 35 3 36 ...
Страница 38: ...3 2 MCU9800 P C BOARD DIAGRAM BOTTOM VIEW 3 37 3 38 ...
Страница 39: ...4 FRONT P C BOARD DIAGRAM 5 CD JACK P C BOARD DIAGRAM 3 39 3 40 ...