Zenith XBR411 Manual page 13

VCR ELECTRICAL TROUBLESHOOTING GUIDE
(To Cap, Drum Motor )
No 12VA
NO
Is the Vcc(13V)
supplied to C130?
YES
NO
Is the D132
Normal?
YES
Check or Replace
the Cap / Drum
NO VFD
NO
Is the R107
Normal?
YES
NO
Is the D128
Normal?
YES
NO
Is the ZD151
Normal?
YES
Check or Replace
the D127
Check or Replace
the D126
Replace the D132
Check or Replace
the R107
Check or Replace
the D128
Check or Replace
the ZD151
3-5
No REG 12V
NO
Is the Vcc(13V) sup-
plied to Q126Collector?
YES
NO
Is the Vcc(33V) sup-
plied to Q126 Base?
YES
NO
Is the Q126 Nomal?
YES
Check or Replace
the D126
No 33V
NO
Is the Vcc(33V) sup-
plied to Q123 Emittor?
YES
NO
Is the Q123 Base
'H'?
YES
Check or Replace
the Q123
Check or Replace
the D126
Check the 'PWR CTL
"H"'signal from µ-com
Check the 33V Line
Replace the Q126
Check or Replace
the D130
Check the 'PWR CTL
"H"'signal from µ-com