Main Power Board; Light Source Power Board; Liquid Crystal Display (Lcd) - Fuji Electric ZPA Service Manual

3) Main power board

Recommended period of replacement
Check
Check terminal
Adjustment after replacement

4) Light Source power board

Check
Check terminal
VIN-GND1
Adjustment after replacement

(8) Liquid crystal display (LCD)

Service life of parts
Error mode
Phenomena
Check
Countermeasures against error : Replace LCD.
Replacement
Adjustment after replacement :
16
(See Appendix 3.)
: 5 years
: 1) electrolytic capacitor leakage.
Check voltage
+24V-GND +24.0±0.3 V
VCC-VSS +5.0±0.3 V
+15V-GND +15.0±0.5 V
-15V-GND –15.0±0.5 V
: check the voltage shown above.
(See Appendix 3.)
: check the voltage shown below.
Check voltage
+24.0±1.0 V
(Input voltage)
VOUT-GND2 +15.0±0.5 V
(Output voltage) +9.0±0.5 V
: check the voltage shown above.
: 30,000 hours Lighting continuously
: Deterioration
: LCD is not displayed, or the display is dim or flickers.
: Adjust contrast (remove or plug the connector). Check connection to the Main
board.
: Turn OFF the power. Disconnect the connector and replace it with a new one.
Adjust the contrast (refer to the instruction manual for details of operating
method.).
2) check the voltage shown below.
Contents
Input
digital
analog
analog
Contents
common for
ZPA, ZPB and ZPG
for ZPA and ZPB
for ZPG
TN5A1191-E