FUNAI F42PDME Service Manual page 83

FLOW CHART NO.5
No display. (Z SUS B/D unit)
Check that the specific voltage is input to the following
terminals.
P1 1, 2pin +180V~+195V
P1 6pin +55V~+65V
P1 8pin +5.0V~+5.5V
Is the fuse(FS1,FS2, FS3) normal?
Check that the specific voltage is output to the following
terminals.
P3 1pin +15V
P3 4, 5pin +5V
P3 8pin +55V~+65V
Check FPC output diode value.
Z SUS
B/D unit
Normal diode value = 0.375 (forward)
Normal diode value = OL (reverse)
Check Z RAMP waveform slope.
Measuring point: B37
7µs
185V
Vs
9µs
Z RAMP waveform
Replace the Panel.
No
Yes
No
Yes
No
Yes
No
P4
Yes
No
Yes
Refer to FLOW CHART NO.4 (No display (PDP PS unit)).
Replace the Z SUS B/D unit.
Replace the Z SUS B/D unit.
Fuse(FS1)
Fuse(FS2)
Fuse(FS3)
P1
Z SUS B/D unit.
Replace the Z SUS B/D unit.
2-3-4
B37
P4
P3
PDMTR2