Sony KDL-42W800A Service Manual page 72

Troubleshooting
3-3-3. Main Board Power Off Checking (for Main SP Lch & Rch)
No Checking Item
1 Check fuse F4601
2 Check connectivity audio Vcc to GND
C4606 – GND
C4607 – GND
C4608 – GND
C4609 – GND
3 Check connectivity audio +3.3V_MAIN to GND
(only for BKE and BKX board)
IC4601 (Pin8) – GND
IC4601 (Pin27) – GND
4 Check connectivity audio output to GND.
CN4601
Pin 1 – GND
Pin 2 – GND
Pin 3 – GND
Pin 4 – GND
OK
Fuse short
No short to GND
No short to GND
No short to GND
Size
42
47
55
W800A/W801A/W802A/W804A/W805A/W806A/W807A/W808A/W809A
NG
Fuse open
Either 1 short to GND
Either 1 short to GND
Either 1 of pin short to GND
B* Board Type G* Board Type
OTHERS JAPAN CHINA ASIA AMERICA EUROPE JAPAN
BA2S BA2W GL2S GL2S GL2E(CH) GL2E(ID)
BA2S BA2W GL2S GL2S GL2E(CH) GL2E(ID)
BA2S BA2W GL2E(CH) GL2E(ID) GL2E(CH) GL2E(ID) GL2E(ID)
RB1G CHASSIS
GL2S
GL2S
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