Lamp Troubleshooting Flow Chart - Mitsubishi Electric WD-52631 Service Manual

Lamp T roubleshooting Flow Chart
• Install Lamp Cover with no Lamp
• Tape Lamp Switch Closed
• Monitor Ballast spark gap.
• Press "POWER'
• Spark gap arc?
Code 66
Code 66
Yes
Ballast
DC Supply?
Yes
PL (1to4)=340V Replace
FB pin 3=5vs Ballast
No
Check
PWB-POWER
PE Connector
ENG-PWR
Pins 1 & 2=12V
(PD-17)
Code 66
Code 66
Check
DVI cable & DM
MODEL: WD-52631 / WD-57731 / WD-65731
Lamp Lights
then goes out
Lamp does
not Light
Check
Ballast
Striking
Yes
Replace
Lamp
• H for 5 sec.
• L for 10 sec.
• H for 1 sec>
• Stays Low
Code 57
Code 57
Check
Engine
Power
OK
Check
Open
Continuity
FB-4 to DVI-20
Page 22
Replace
Lamp
Code 34
Code 34
Check Cable
No OK
Connections
DVI, FB & CJ3
Press
"POWER"
Check
Pulses
Pulses
LAMP-EN
(FB pin 4)
No Pulse
Code 66
Code 66
NG
Check
PWB-POWER
Code 61
Code 61
OK
Replace
Engine
FB Interconnect
Circuit
Problem
Install Lamp
& Lamp Cover
• H for 4 sec.
• L for 10 sec.
• Repeats
several times
Yes
Replace
Lamp