Loewe FL38 - Page 27

12
FL38 (LC-15A2L)
TROUBLE SHOOTING TABLE (Continued)
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Check all the settings microprocessor's adjust process menu.
Is source GND normal?
Is CSCOM waveform normal?
Check R1212 and their peripheral parts.
Check IC1109, Q1101, Q1102,
D1101, R1120, R1130 and their peripheral parts.
Check FB1202 and their peripheral parts.
Yes
No
No
Becomes dark
No
Time passes, becomes dark
Is gate GND normal?
Is gate clock (GCK) normal?
Check R1223 and gate aray peripheral parts.
Yes
No
Check D1201 and their peripheral parts.
No
Is B-5.5V being outputted?
Is VCC being outputted?
Check T701's secondary +5V outputs line?
Yes
No
Is GSP waveform normal?
Check R1223 and their peripheral parts.
Yes
No
Becomes white.
Is 3.3V VHS
being outputted?
Is source clock normal?
Check +3.3V outputs line of IC704.
Check R1210,
R1211 and their peripheral parts.
Check FB1203 and gate aray peripheral parts.
Is output of LBR
and HG normal?
Yes
Yes
No
No
No
Vertical line output