Toshiba TLP-X4500 Service Manual page 16

Picture is not displayed when
the RGB signal is input
Check at operating mode
Are signal
input at each pin on the
PWB assembly
Drive?
TPX29 : R signal
YES
TPX26 : G signal
TPX23 : B signal
TPX20 : H sync
TPX19 : V sync
Are voltage input
at each pin on the PWB
assembly Drive?
E800
E800
YES
E800
E800
PWB assembly Drive
Picture is not displayed when the VIDEO,
S-VIDEO, Component Signal is input
Are voltage
input at each pin on
the PWB assembly
Drive?
Are signal
input at these
pins of EV01 on the
PWB assembly
Drive?
PWB assembly Drive
TLP-X4500(P5XMLA)
Change the
NO
IS01 on the PWB
assembly Signal.
Is it repaired?
PWB assembly Signal
NO
Power unit
(circuit)
: +16.5V
1
: +15V
4
: +4V
6
: +6V
12
LCD panel
Check at operating mode
NO
E800 : +16.5V
1
E800 : +15V
YES 4
E800 : +4V
6
E800 : +6V
12
NO
CHV29 : VIDEO (Composite)
CHV28 : S-VIDEO (Y)
YES
CHV27 : S-VIDEO (C)
CHV34 : Component (Y)
CHV35 : Component (Cb)
CHV36 : Component (Cr)
15
YES
IC (IS01)
NO
EL4332CS
Power unit (circuit)
PWB assembly Signal