3-5
ELECTRICAL TROUBLESHOOTING GUIDE
NO
Check or Replace
D102
Replace D123
Replace D124
Replace D121
YES
YES
Is D121
Normal?
Power Line of Main
PCB is short
1. Power(SMPS) CIRCUIT
No 5.3VA
Replace FR101
(Use the same ICW)
Is FR101
Normal?
Is R101
Normal?
Is BD101
Normal?
NO
NO
NO
NO
NO
NO
NO
NO
NO
Replace
BD101
Replace R101
Is D102
normal?
Replace D125
Replace IC103
YES
YES
YES
YES
YES
YES
YES
Is Vcc (9V - 18V) sup-
plied to IC101 Pin2?
Are D125
normal?
Is there about 2.5V
at IC103 Pin1?
Is D123
normal?
Is D124
Normal?
(1) NNo 5.3VA
Summary of Contents for ZDX-313
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Page 40: ...3 35 3 36 2 TU IF CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T PB REC...
Page 43: ...3 41 3 42 5 JACK CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T...
Page 49: ...3 53 3 54 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE...
Page 50: ...3 55 LOCATION GUIDE...
Page 51: ...3 56 LOCATION GUIDE...
Page 52: ...3 57 3 58 2 MAIN P C BOARD BOTTOM SIDE...
Page 53: ...3 59 3 60 4 KEY P C BOARD LOCATION GUIDE 3 POWER P C BOARD LOCATION GUIDE...
Page 54: ......
Page 70: ...3 76 12 ZR36868 AUDIO OUTPUT TO AUDIO DAC 2 COMPOSITE VIDEO SIGNAL FIG 11 2 FIG 12 1...
Page 71: ...3 77 FIG 13 1 13 AUDIO OUTPUT FROM AUDIO DAC...
Page 75: ...3 81 3 82 A B C D E F G H I J K L M N O P Q R S T CIRCUIT DIAGRAMS 1 SYSTEM CIRCUIT DIAGRAM...
Page 76: ...3 83 3 84 2 SERVO CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T...
Page 77: ...3 85 3 86 3 AV JACK CIRCUIT DIAGRAM A B C D E F G H I J K L M N O P Q R S T...
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