Troubleshooting; Micro / Terminal Pwbs - Mitsubishi WD-52527 Service Manual

MODEL: WD-52527 / WD-52528 / WD-62527 / WD-62528
MICRO / TERMINAL PWB TROUBLESHOOTING
T roubleshooting Guide
Sym ptom
No audio or video on one input Physical damage on RCA jack, broken
No video on all inputs
No audio on all inputs
No HDMI signal
No HDMI audio
No DVI audio
No power or TV won't boot
TV shuts down
Main picture ok, no PIP
Main picture ok, no PIP
PIP ok, no main picture
No closed captioning
IR blaster not working
MICRO PWB LAYOUT
Possible Ca use s
solder or trace at pin on terminal board
TA connecter loose, No Vcc to IC2K01,
IC9C00, IC9C10, IC9C20
TA connecter loose, No Vcc to IC3J01,
IC9C00, IC9C10, IC9C20, IC3E00,
IC3E01
Source not HDMI compliant, physical
damage to J2001, J2101, no Vcc to
IC2000, IC2600, IC9C20, IC9C71, IC9C81
Source is DVI mode, IC2401, IC9C71
IC3J02, IC3J03
Loose RA connector, no Vcc to IC7A00,
IC9C51
Loose or disconnected JD connector , no
Vcc to IC7C81
Loose or disconnected JD connector , no
Vcc to IC7C81
IC2K01, Q2M20, 21, 22
IC2K02, 03, 04, Q2M00, 01, 02
Q2K07, 08, 09, 30, 31, 32
Physical damage on phono jack PJ2E00,
01, broken solder or trace at pin on Micro
board, no Vcc to IC7P01-05
Page 33