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MODEL: WD-52526 / WD-62526
Page 33
MICRO / TERMINAL PWB TROUBLESHOOTING
Symptom
Possible Causes
No audio or video from one
external input.
Physical damage to RCA jack, or broken
solder or trace at pin on terminal board.
No video from all external inputs
TA connect
o
r loose, No Vcc to IC2K01,
IC9C00, IC9C10, IC9C20
No audio from all inputs
TA connect
o
r loose, No Vcc to IC3J01,
IC9C00, IC9C10, IC9C20, IC3E00, IC3E01
No HDMI signal
Source not HDMI compliant, phsyical
damage to J2001, J2101, no Vcc to IC2000,
IC2600, IC9C20, IC9C71, IC9C81
No HDMI audio
Source is DVI mode, IC2401, IC9C71
No DVI audio
IC3J02, IC3J03
No power or TV won't boot
Loose RA connector, no Vcc to IC7A00,
IC9C51
TV shuts down
Loose or disconnected JD connector , no
Vcc to IC7C81
No Picture
IC2K02, 03, 04, Q2M00, 01, 02
No closed captioning
Q2K07, 08, 09, 30, 31, 32
Troubleshooting Guide
POWER PWB TROUBLESHOOTING
SYMPTOM
CHECK POINT
POSSIBLE CAUSE
Check +15VS @ connector PD pin 1
Check Q9E00 circuit
Check -15VS @ connector PD pin 7
Check Q9E00 circuit
Check doubler circuit
Check ballast circuit
IC9A24 circuit
Zener D9A43
Check 18V @ PA2 pin 8
Q9A13 circuit
IC9A23 circuit
Zener D9A41
IC9A21 circuit
Q9A12 circuit
Zener D9A47
F9E10 (+15VS)
F9E11 (-15VS)
CHECK ALL FUSES
T9A10 circuit
IC9A10 circuit
IC9A22 circuit
Zener D9A39
PD pin 20 for HIGH (AC-OFF)
PC9A21 circuit
NO POWER
Check 340VDC @ connector PL
Check 3.3V @ connector PA2 pin 1
Check 12VS @ connector PD pin 14
Check 5VS @ connector PC pin 8
Check 4.5V @ PD pin 19 (STBY SHORT)
Check 18V @ D926 cathode
Check 5VSL @ connector PD pin 16
ERROR CODE 51 (Spk
Short)
ERROR CODE 34
(lamp not lit)
ERROR CODE 48 (Eng
power short)
ERROR CODE 41
(Stby Short detected)
Содержание WD-52526
Страница 2: ......
Страница 49: ...MODELS WD 52526 WD 62526 Page 49 Main Power Supply ...
Страница 50: ...MODELS WD 52526 WD 62526 Page 50 Lamp Ballast DC Supply Fans Power Supply ...
Страница 51: ...MODELS WD 52526 WD 62526 Page 51 Power Distribution ...
Страница 52: ...MODELS WD 52526 WD 62526 Page 52 Analog Video Signal Path ...
Страница 53: ...MODELS WD 52526 WD 62526 Page 53 Digital Video Signal Path ...
Страница 54: ...MODELS WD 52526 WD 62526 Page 54 Sound Signal Path ...
Страница 55: ...MODELS WD 52526 WD 62526 Page 55 Command Input Circuitry Serial Control Lines ...
Страница 56: ...MODELS WD 52526 WD 62526 Page 56 Lamp Control Circuitry Shutter Control ...
Страница 57: ...MODELS WD 52526 WD 62526 Page 57 Lamp Engine Fan Protect Circuitry ...
Страница 58: ...MODELS WD 52526 WD 62526 Page 58 ...