Panasonic PT-44LCX65-K, Руководство по обслуживанию, Страница: 101 / 236

Cooling Fan (Fan1, Fan2 and/or Fan3) malfunction.
Mis-installed the Lamp Cover (the Lamp cover is open).
The temperature sensor (R2811) on the Thermistor 1
C.B.A. on the Fan 1 is short or open.
It indicates when the temperature detected by the
Temperature Sensor (R2811) on Thermistor 1 C.B.A.
exceeds 55 ˚C (131 ˚F).
1. The surrounding temperature of the place of use may
be too high.
2. The vents on the rear may be blocked.
The temperature sensor (R2821) on the Thermistor 2
C.B.A. on the Lamp House is short or open.
It indicates when the temperature detected by the
Temperature Sensor (R2821) on Thermistor 2 C.B.A.
exceeds 105 ˚C (221 ˚F).
1. The surrounding temperature of the place of use may
be too high.
2. The vents on the rear may be blocked.
Clogged air filter of the Fan Case Unit.
The Lamp is defective (short of the Lamp).
Thermal fuse (F1302) 117 ˚C (243 ˚F) on the Ballast
C.B.A. is open due to abnormal temperature rise.
The Ballast C.B.A. is defective.
1. +17V line on the LCD Drive C.B.A. error.
2. +9V line on the LCD Drive C.B.A. error.
3. +5V line on the LCD Drive C.B.A. error.
1. The Lamp is not cooled off.
2. Thermal Fuse Unit (115˚C (239˚F)) is defective (open).
3. The Lamp is defective (crack).
4. The Lamp voltage becomes more over 130V or less
than 30V.
5. The Ballast C.B.A. is defective.
6. The Main C.B.A. is defective.
How to solve the problem indicated by the Error Indication of LED
(All symptom is that Lamp turns off or Lamp does not light up)
Error No. Problem Possible Solution
12)
1)
2)
3)
4)
6)
7)
8)
9)
10)
11)
5)
Are the Fan1,
Fan2 and Fan3
operating?
Replace the TV unit (Power C.B.A. or
Base C.B.A.). Still NG, replace the
Projection Unit.
NO
Replace the Projection Unit.
Replace the Projection Unit.
Only the Fan1 stops.
Only the Fan2 stops.
Only the Fan3 stops.
Replace the Fan3.
1. Tighten the screw of the Lamp Cover.
2. If still NG, replace the Cover SW (SW2911) on the Cover Switch C.B.A.
3. If still NG, replace the TV unit (Main C.B.A.).
1. Relocate the unit to a proper location.
• Do not place in direct sunlight and other sources of direct heat.
• Do not place the unit in humid or dusty location, or areas exposed to smokeor steam.
(surrounding temperature should be between 0 ˚C (32 ˚F) and 40 ˚C (104 ˚F) and humidity should be
between 20 % and 80 % (with no condensation).)
• The vents are not blocked.
It is recommended that a gap of at least 10 cm is left all around the unit even when it is placed inside a
cabinet or between shelves.
2. Check if the fans are operating properly.
1. Relocate the unit to a proper location.
• Do not place in direct sunlight and other sources of direct heat.
• Do not place the unit in humid or dusty location, or areas exposed to smokeor steam.
(surrounding temperature should be between 0 ˚C (32 ˚F) and 40 ˚C (104 ˚F) and humidity should be
between 20 % and 80 % (with no condensation).)
• The vents are not blocked.
It is recommended that a gap of at least 10 cm is left all around the unit even when it is placed inside a
cabinet or between shelves.
2. Check if the fans are operating properly.
1. Cleaning the Air Filter on the Projection Unit.
2. If still NG, replace the Projection Unit.
3. If still NG, replace the TV unit (Main C.B.A.).
1. Confirm that the Thermal Fuse Unit (115˚C(239˚F)) on the Lamp House is not open.
2. Wait until the Lamp is cooled off and try to turn the power back on. If same error LED
indication continues, remove the Lamp and visually inspect it. If it is cracked, it must be
replaced. If the Lamp is not cracked, replace the Ballast C.B.A.
3. If still NG, replace the TV unit (Main C.B.A.).
If the Lamp does not light up after attempting turning on the power 2 or 3 times, replace the Ballast C.B.A.
Replace the Lamp.
Replace the Ballast C.B.A.
Note: The Projection Unit includes LCD Drive C.B.A.
1. Replace the TV unit (Power C.B.A. or Base C.B.A.).
2. If still NG, replace the Projection Unit (LCD Drive C.B.A.).
Note: The Projection Unit includes LCD Drive C.B.A.
Remove P2302 connector on the LCD Drive C.B.A. and check if the resistance between pin1 and pin2 of
P2811 on the Thermistor 1 C.B.A. is 5k 200k . If NG, replace the Temperature Sensor (R2811) on the
Thermistor 1 C.B.A. Still NG, replace the Projection Unit. Still NG, replace the Main C.B.A.
Remove P2303 connector on the LCD Drive C.B.A. and check if the resistance between pin1 and pin2 of
P2821 on the Thermistor 2 C.B.A. is 5k 1M . If NG, replace the Temperature Sensor (R2821) on the
Thermistor 2 C.B.A. Still NG, replace the Projection Unit. Still NG, replace the Main C.B.A.
Note: Before performing the troubleshooting, confirm that all connector cables in the unit are connected to connectors correctly.
PT-44LCX65-K / PT-52LCX65-K / PT-61LCX65-K
101