Sony KLV-24EX430 Service Manual ▷ View online
KLV-24 EX430
RM-GA022
Troubleshooting
3-5. Video Problem
3 5 7 C
t t
bl h ti
fl
OK
3-5-7. Component troubleshooting flow
Component
NG / No
picture
Check
signal
source
or cable.
Check
Input jack
‘J3006’
connection
R f3
Ref4
Video Signal
Source problem or
cable problem
NG
Make sure jack
connected
properly to board
NG
OK
Ref3
Ref5
Confirm waveform at
C3027 (face to IC5000)
IC5000 defect
NG
OK
NG
OK
Check input signal 0.7Vpp
at R3034_Y0P line ,
R3036_PB0P line &
R3037_PR0P line
same as Ref3. Confirm
waveform at C3029 (face
to IC5000) same as Ref4.
Confirm waveform at
C3030 (face to IC5000)
same as Ref5. Input CB
pattern.
R3014, R3017,
R3015, R3018,
R3015, R3018,
R3016 or R3019
connection/defect
Confirm R3014,
R3034, C3027 (Y0P
line)connection and
NG
Confirm R3015,
R3036, C3029 (PB0P
line)connection and
Confirm R3016,
R3037, C3030 (PR0P
line)connection and
33
connection/defect
value
value
value
Parts Location : B2FN Board
KLV-24 EX430
RM-GA022
Troubleshooting
3-5. Video Problem
3 5 8 A t
it hi
C
t / Vid
2 t
bl h ti
fl
3-5-8. Auto switching Component / Video 2 troubleshooting flow
Auto switching NG
Input
Pr-input
at J3006
and
IC5000 defect
OK
OK
Take out
Pr-input
at J3006
and
Check at
RB5004
(pin3) =
OK
g
check at
R5033 =
5V?
NG
NG
check at
R5033 =
0V?
(pin3) =
5V?
NG
R3039 defect
J3006 defect
RB5004
connection/ defect
34
Parts Location : B2FN Board
KLV-24 EX430
RM-GA022
Troubleshooting
3-5. Video Problem
3 5 9 PC t
bl h ti
fl
3-5-9. PC troubleshooting flow
(A)
PC display problem
Check PC input source signal
or cable.
NG
PC Signal Source Problem or cable
problem
OK
Confirm PC input source format /
resolution supported by TV?
Change PC input source to TV
supported format
NG
NG
Check PC jack ‘CN3001’
connection
Replace jack
OK
OK
PC detail path
troubleshooting
35
Parts Location : B2FN Board
KLV-24 EX430
RM-GA022
Troubleshooting
3-5. Video Problem
3 5 9 PC t
bl h ti
fl
3-5-9. PC troubleshooting flow
(B)
RP-signal
PC NG/No picture
g
GP-signal
BP-signal
Confirm waveform at
C3046 (face to IC5000)
same as BP-signal.
Confirm waveform at
Check input
IC5000
defect
NG
OK
Check
pull up 5V
at R3066
& R3067
OK
OK
OK
NG
NG
Confirm waveform at
C3048 (face to IC5000)
same as GP-signal.
Confirm waveform at
C3050 (face to IC5000)
same as RP-signal. Input
CB pattern.
Check 5V
at
C3042_HSYNC &
C3043_VSYNC
Check input
signal 0.7Vpp at
C3046_BP line,
C3048_GP line &
C3050_RP line
R3059 orR3060 or
R3061 defect
Confirm RB3002 &
C3046 (BP
line)connection and
value
NG
NG
Confirm RB3002 &
C3050 (RP
line)connection and
value
Confirm D3000,
R3066 & R3067
connection and
value
Confirm RB3001
connection and
value
NG
NG
Confirm RB3002 & C3048 (GP line)
connection and value
36
Parts Location : B2FN Board
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