Indicators Are Lit Abnormally Or Blinking; Abnormal Panel Power Source - Sony TRIMASTER EL BVM-E171 Service Manual

3-3.

Indicators Are Lit Abnormally or Blinking

3-3-1.

Abnormal Panel Power Source

Schematic diagram of panel power
F9000
28V
FUSE
IC9000
ON/OFF
CLOCK
Controller
F9001
LTC3857
FUSE
PGOOD
F9002
FUSE
IC9001
ON/OFF
CLOCK
Controller
F9003
LTC3857
FUSE
PGOOD
Factor
An abnormality of the panel power line (VDDDS, VCATH)
Unit status at an error
The DC-DC converter for panel power on the BC board shuts down.
Applicable parts (Generated voltage line name)
• CN8101 (+28V_TC)
• IC9000 (VDDDS)
• IC9001 (VCATH)
Remedy
• Check IC9000 (VDDDS) and IC9001 (VCATH) in the panel power circuit.
• Check the VDDDS (JL9018) and VCATH (JL9027) voltages.
BVM-E171
D9004
Q9002
L9000
L
Q9003
D9005
D9006
Q9005
L9001
L
Q9004
D9007
D9008
Q9006
L9002
L
Q9007
R9065/R9078
D9009
D90010
Q9009
L9003
L
Q9008
R9066/R9079
D90011
Flow of current
R9063
23V
R
C9034/C9038
R9064
23V
R
C9035/C9039
F9004
５ V
R
FUSE
D9012
C9036
F9005
５ V
R FUSE
D9013
C9037
DS-H
Panel
VCATH
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