1-2.Trouble Shooting - Toshiba TLP-C001 Service Manual

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1-2.Trouble Shooting

CAUSE CHECK POINT
Power is not on 1.Power supply is
connected well.
2.No light on
"ON/Standby" LED
Standby mode "ON/Standby" LED Color keeps on
couldn't be
powered on
Display is MAIN PCB display MXIC Pattern
abnormal
Camera DSP
display
Display with Flicker Switch
waved line
MAIN PCB display MXIC Pattern
Camera DSP
display
CHECK ITEM JUDGE
A. Power supply (NG)
=>Power supply is NG
(OK)
=>Check next step
B. Keypad PCB (NG)
connection with =>KEYPAD PCB or
+3.3V Cable1 (2-1) is NG
(OK)
=>MAIN PCB is NG
=>KEYPAD PCB or MAIN
orange PCB is NG
(NG)
(See1-1) =>MAIN PCB is NG
(OK)
=>Check next step
Test Pattern (NG)
(See1-1) =>CAMERA HEAD ASSY
or Cable1(2-1) is NG
(OK)
=>MAIN PCB is NG
FLICKER SW (OK)
(50/60 Hz) =>Normal
(NG)
=>Check next step
(NG)
(See1-1) =>MAIN PCB is NG
(OK)
=>Check next step
Test Pattern (NG)
(See1-1) =>CAMERA HEAD ASSY
or Cable1(2-1) is NG
(OK)
=>MAIN PCB is NG
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