Read Panasonic PT-TX400 / PT-TX310 / PT-TW340 / PT-TX210 / PT-TW250 (serv.man3) Service Manual online
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Troubleshooting
Starting Abnormality
Input 100-240V, the
standby indicator
is off
standby indicator
is off
Check the main board's
16V power input
16V power input
Yes
Yes
Yes
No
No
No
No
Check 3_3V_MCU and
if ON_MCU (7th pin of
IC1801) is high level
if ON_MCU (7th pin of
IC1801) is high level
Power error
Check if the fuse is melt
If there is any component
damaged on the power board
Check if the fuse is melt
If there is any component
damaged on the power board
1.1. 3_3V_MCU is low, check
IC1007 is working properly 2. If
the seventh pin of IC1801 is low,
IC1801 is abnormal.
2.1. Reburn Sub CPU and Flash
program
2.2. IC1801 is abnormal
IC1007 is working properly 2. If
the seventh pin of IC1801 is low,
IC1801 is abnormal.
2.1. Reburn Sub CPU and Flash
program
2.2. IC1801 is abnormal
1.1. Check if IC1102/
IC1009 and IC1008 are
working properly
2.1. Reburn Sub CPU and
Flash program
2.2. Replace IC1004
IC1009 and IC1008 are
working properly
2.1. Reburn Sub CPU and
Flash program
2.2. Replace IC1004
1. Check if IRIS is abnormal when the projector is started.
2. Check if FAN_A, FAN_B and FAN_C are low level when the projector is
started. If yes, the projector is normal.
2. Check if FAN_A, FAN_B and FAN_C are low level when the projector is
started. If yes, the projector is normal.
1. Check if P3001 is well connected
2. Check LAMP SW (P3002) is well connected
3. IC3100's 8th and 10th pins are high level and 5th pin is low level.
2. Check LAMP SW (P3002) is well connected
3. IC3100's 8th and 10th pins are high level and 5th pin is low level.
1. Check if TEMP. A (P3006) is well connected
2. Check if IC1002 and IC1003 and their surrounding loops are normal
2. Check if IC1002 and IC1003 and their surrounding loops are normal
The projector
cannot be turned
on and the orange
indicator is on.
cannot be turned
on and the orange
indicator is on.
The green indicator
is on when the
projector is turned
on and the lamp
is off.
is on when the
projector is turned
on and the lamp
is off.
The orange
indicator is flashing
when the projector
is turned on.
indicator is flashing
when the projector
is turned on.
Yes
No
Yes
Yes
Follow the procedures below.
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