Power-Pwb - Mitsubishi WD-52527 Service Manual
Lcd projection hdtv v28 / v28+ chassis
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Also See for WD-52527:
- Specification sheet (10 pages) ,
- Owner's manual (110 pages) ,
- Training manual (72 pages)
Table of Contents
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MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
POWER PWB TROUBLESHOOTING
SYMPTOM
Check +15VS @ connector PD pin 1
ERROR CODE 51
Check -15VS @ connector PD pin 7
ERROR CODE 34
Check 340VDC @ connector PL
Check 3.3V @ connector PA2 pin 1
ERROR CODE 48
Check 18V @ L9A45/C9A82
Check 12VS @ connector PD pin 14
ERROR CODE 41
Check 5VS @ connector PC pin 8
Check 4.5V @ connector PD pin 19
CHECK ALL FUSES
Check 18V @ TP18VS
NO POWER
Check 5VSL @ connector PD pin 16
Check connector PD pin 20 for HIGH (active) PC9A21 circuit
POWER PWB OUTPUT CONNECTORS
CHECK POINT
Page 34
POSSIBLE CAUSE
Check Q9E00 circuit
Check Q9E00 circuit
Check doubler circuit
Check ballast circuit
IC9A24 circuit
Zener D9A43
Q9A13 circuit
IC9A23 circuit
Zener D9A41
IC9A21 circuit
Q9A12 circuit
Zener D9A47
F9E10
F9E11
T9A10 circuit
IC9A10 circuit
IC9A22 circuit
Zener D9A39
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