Lamp Troubleshooting; Lamp Control Diagram; Lamp Troubleshooting Flow Chart - Mitsubishi Electric WD-52531 Service Manual

Lamp Control
Block Diagram

Lamp Troubleshooting

Flow Chart
• Install Lamp Cover with no Lamp
• Monitor Ballast spark gap.
• Press "POWER'
• Spark gap arc?
Ballast
DC Supply?
PL (1 to 5)=340V
FB pin 3=5vs
No
Replace
PWB-POWER
MODEL: WD-52531 / WD-62531 / WD-62530
Lamp Lights
then goes out
Code 66
Code 66
• H for 5 sec.
Yes
• L for 10 sec.
• H for 1 sec>
• Stays Low
Yes
Replace
Code 66
Code 66
Ballast
KA Connector
No
PB Connector
(1~4)=3.3V?
(1~2)=18V?
(7~8)=18V?
Yes
Check
PWBs Signal & Interface
Page 20
Replace
Code 34
Code 34
Lamp does
not Light
Check Cable
Check
No
Connections
Ballast
DVI, FC &
Striking
CN101
Yes
Replace
Press
Lamp
"POWER"
Check
Pulses
LAMP-EN
(FC pin 23)
No Pulse
Check
Engine
Power
OK
OK
Code 34
Code 34
Check
PWB-SIGNAL
Lamp
OK
Circuit
Problem
Install Lamp
& Lamp Cover
• H for 4 sec.
Pulses
• L for 10 sec.
• Repeats
several times
Code
Code
66
66
Yes
Replace
Lamp