Life is good Projector RD-JT21 User Manual
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8. Trouble Shooting
8.1 No Power
Power can not be truned on
Check lamp door
if its well closed
Check
Main Bd J7 pin 1 to
GND or not?
Close the lamp door
securely
Exchange the micro
switch & thermal
sendor couple
Loop 1
No
Yes
No
1. Status green blink (Loop1)
2. Status orange blink (Look 2)
3. No LED (Loop 3)
Is color
wheel spin
Check
Assy PWR module
at J104 on
1.Pin(3, 12)if output 5V
2. Pin(6, 7) if output 12V
3. Pin (2, 13) if output
3.3V
Yes
Check ballast
if there is sound like
ignite the lamp
Change the lamp
Yes
No
Yes
Change the ballast
Check the color
wheel cable if the
cable loose
Reconnect the
color wheel
cable
Check 12V fan
if it's spin
Change the 12V
fan
Yes
Yes
No
Check
main board at J1 on
pin 26, 27 if voltage
high or not?
Change color wheel
Change main
board
No
No
Yes
Yes
No
Change
Assy PWR module
Loop 3
Change Assy
PWR module
No
Change Main
Board
Loop 2