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3-3
PFM-42X1/42X1N
Check
U12(AD9888)
.HSYNC-ADC
.VSYNC-ADC
.DCLK-ADC
.DATA
NO RASTER ON ANALOG
SIGNAL
Check
Power Line
IC21, IC45,
IC20, IC22,
IC23, IC24
Check LED
Status on
Display Head
Check
Ctrl signal
IC44 Pin#32
(LVDS583)
Green
3.3 V
2.5 V
Fail
Fail
Find a
Soldering Error
or check the
oscillator (X5)
.
Check the D-sub Connection
- Y/Pb/Pr Jack check
.
Check the other Device
- IC26, IC27 (SD RAM)
- IC44 (LVDS83) Pin#32
Check
Scaler (IC14)
Output
. PCLOCK
. PVSYNC
. PHSYNC
. PVALID
.DATA
Fail
Fail
Pass
Check
Control Signal
‘ DISPEN ’
CN501 Pin #27
Fail
Fail
Fail
Amber
Pass
Pass
Pass
‘ A ’ Process
Replace
the Main Board
Replace Device
IC21, IC30, IC4
Replace
the Power Board
Replace
the Main Board
Replace
the Main Board
Replace
the Main Board
3-2. No Raster State
Summary of Contents for BKM-V12
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