Focus Ng; Horizontal Size Can Not Control - Acer 7277e Service Manual

4.10 Focus NG

10. FOCUS NG

4.11 Horizontal Size Can Not Control

12.BRIGHTNESS CAN NOT CONTROL
Troubleshooting
NG
CHECK FOCUS TRACE
NG
OK
REPLACE
REPLACE
IC201
NG
11. HORIZONTAL SIZE CAN NOT CONTROL
HORIZONTAL SIZE CAN NOT CONTROL
CHECK Q314,Q315,Q316
NO
CHECK Q317,Q318
CHECK IC201
YES
PIN11 ABOUT
para wave
NO
CHECK +12V REPLACE
REPLACE
BRIGHTNESS CHECK BRITE SIGNAL
CAN NOT ADJUSTABLE
CONTROL
CHECK C224,Q202
R241,Q203,R232
R231,+45V,+6.5V
FOCUS NG
CHECK IC201 PIN32
WAVEFORM
OK
CHECK H-PARA SIGNAL
C329,R354,R327
REPLACE
OK
CHECK CS-1,CS-2
SIGNAL FOIL
TRACE
NG
YES
YES
NO
YES
REPLACE
API Confidential
No Copy/Reproduction Allowed
OK
CHECK Q321 FOCUS
CKT
NG
NG
REPLACE
COMPONENT
REPLACE
CHECK UC CIRCUIT
CHECK UC CIRCUIT
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