3-2
PFM-42B2/42B2E
3-1-2. How to Distinguish the Trouble of the PDP Unit.
1) The power supply control signals PFCGO, VCEGO,VSAGO are HIGH.
Power supply board CN7 pin6 : VSAGO, pin8 : VCEGO, pin10 : PFCGO
2) The power supply for PDP unit is normally supplied.
The power supply board (APS-179) supplies four kind of voltages.
Vs voltage : 82.5 V line .......... within from 75 V to 90 V (CN23 pin 8/9/10, CN33 pin 7/8/9)
Va voltage : 60 V line ............. within from 50 V to 70 V (CN42 pin1, CN52 pin1)
Vcc voltage : 5.1 V line .......... (CN6 pin6) within
±
5 %
Vpr2 voltage : 3.3 V line ........ (CN6 pin1) within
±
5 %
3) VSYNC (negative polarity), PARITY, HSYNC (negative polarity), BLANKING (negative polarity),
DCLK, DIGITAL DATA (RGB : 8 bits
x
3) are measured as signals and LVDS is output.
(Measurement points on the B board)
PARITY :
TP271
HSYNC :
TP272
VSYNC :
TP273
DCLK :
TP274
BLANKING :
TP275
DIGITAL DATA : from RB8220 to RB8225
LVDS :
CN103
If upper conditions are satisfied, the PDP unit may be defective.
Summary of Contents for PFM-42B2
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