Fujitsu Siemens Computers FSC B17-1 User Manual

FSC B17-1 Service Manual
34
8.2 Trouble Shooting
8.2.1 Main Board
1.NO SCREEN APPEAR
Note: 1. if Replace “MAIN-BOARD” , Please re-do “DDC-content” programmed & “WHITE-Balance”.
2. if Replace “Power Board” only, Please re-do “ WHITE-Balance”
Measured U503 pin 2 = 2.5 V?
Measured U502 pin 2= 3.3V?
Measured U501
p
in 2 =3.3V?
Check Correspondent component.
Is there any shortage or cold solder?
Yes.there have OSD show
Yes, all DC level exist
Disconnected the Signal cable( Loose the
Si
g
nal cable ),Is the screen show “Cable Not
Connected the Signal cable again,
Check LED status.
Led Green
Replace U202
Flash Rom
N
o, nothing is show
Connected the Signal cable again,
Check LED status.
Check Power switch is in Power-on
status , and check if Power switch had
been stuck ?
Led Orange
OK, Keyboard no stuck Led orange
Led Green
Check the Wire-Harness from CN301
Measured RGB (R136,R138,R140) H,V Input
at U106 pin 4,10 ,was there have signal ?
Check Correspondent
component short/open
( Protection Diode )
N
G
OK,Wire tight enough
Check Panel-Power Circuit Block
OK,Panel Power OK
Check U203 Data-output Block
OK, U203 data OK
Replace Power board and Check
Inverter control relative circuit
Re-do White balance adjus
t
OK,input Normal
Measured Crystal X201(14.318MHz)
OK,clock
Replace U203 (GM2120)
OK

Fujitsu Siemens Computers FSC B17-1 Specifications

General

Brand	Fujitsu Siemens Computers
Model	FSC B17-1
Category	Monitor
Language	English