3-54
ELECTRICAL TROUBLESHOOTING GUIDE
DVD PART
Replace IC301.
Refer to VCR Part
Check short
Reconnect it.
1. µ-COM Circuit
A. No Power
Does Logo appear
on the screen?
Is oscillation of
X501 normal?
Are IC501 normal?
Does no DISC appear?
Does Hello
appear at FLD?
Is PDV02
connected normally?
Is PDV02 Pins8, 9,
10, 11 normal?
The waveform
on AD(0~21) of IC501
normal?
Are IC301 Pins5, 26 normal?
Replace Main B/D.
Check the oscillation
Check short.
OK
Replace IC501
Check power.
(Refer to power)
If power is
normal
OK
POWER ON
1
1
YES
YES
YES
YES
NO
YES
YES
YES
YES
A
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
A
Summary of Contents for SD-V290
Page 28: ...3 34 3 35 2 TU IF CIRCUIT DIAGRAM PB REC ...
Page 31: ...3 40 3 41 5 JACK CIRCUIT DIAGRAM ...
Page 33: ...3 44 3 45 7 KEY CIRCUIT DIAGRAM ...
Page 36: ...PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE 3 50 3 51 ...
Page 50: ......
Page 56: ... 02 12 04 R17149A TOSHIBA DAP202K 3 76 3 77 6 JACK CIRCUIT DIAGRAM ...
Page 61: ...LOCATION GUIDE 3 86 3 87 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW ...
Page 62: ...LOCATION GUIDE 3 88 3 89 2 MAIN P C BOARD BOTTOM VIEW ...
Page 63: ......