Panasonic PT-TW351R (serv.man6) Service Manual ▷ View online
9
PREFACE
<TW351R>
3. Dimensions
63 (2-15
/32")
57 (2-1/4")
68.5 (2-11/16")
335 (13-3/16")
124.3 (4-29/32")
329 (12-1
5/16")
9.8 (3/8")
97 (3-13/16")
87.5 (3-7/16")
134.1 (5-9/32")
167.5 (6-19/32")
<Unit : mm (inch)>
10
PREFACE
<TW351R>
INF-1
SECTION
1
(2017-01)
CONTENTS
1. Circuits Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INF-2
1. 1. Thermal switch
1. 2. Lamp cover switch
1. 3. Fuse (F2003)
1. 2. Lamp cover switch
1. 3. Fuse (F2003)
2. Maintenance/Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INF-3
2. 1. Maintenance
2. 2. Replacing the Unit
2. 3. How to check the lamp runtime
2. 4. Cleaning
2. 2. Replacing the Unit
2. 3. How to check the lamp runtime
2. 4. Cleaning
3. Notes on service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INF-10
3. 1. Before service operation
3. 2. Service
3. 3. Security functions
3. 4. Standby mode
3. 5. How to change the baud rate of serial communication port
3. 2. Service
3. 3. Security functions
3. 4. Standby mode
3. 5. How to change the baud rate of serial communication port
4. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INF-14
4. 1. LED indicators
4. 2. Shutdown system
4. 3. Error log
4. 4. Troubleshooting
4. 5. I/O port functions
4. 2. Shutdown system
4. 3. Error log
4. 4. Troubleshooting
4. 5. I/O port functions
SECTION 1 SERVICE INFORMATION
INF-2
SECTION 1 SERVICE INFORMATION
<TW351R>
1. Circuits Protection
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the projector, it will
automatically turn off by operating one of the following protection circuits.
1. 1. Thermal switch
There is a thermal switch inside of the projector to detect the
internal temperature rising abnormally. When the internal
temperature around lamp reaches near 120°C , the thermal
switch will open to cut off the power supply to the lamp power
circuit.
The thermal switch is not reset to normal automatically even
if the internal temperature becomes normal. Please reset the
thermal switch following to the procedure below.
How to reset the thermal switch
1. Remove the cabinet top case.
2. Press the reset button on the thermal switch.
Caution:
Before press the reset button, disconnect the AC cord from the
projector.
1. 2. Lamp cover switch
The lamp cover switch cuts off the drive signal to the lamp
circuit when the lamp cover is removed or not closed com-
pletely. After opening the lamp cover for replacing the lamp
unit, place the lamp cover correctly otherwise the projector
cannot turn on.
1. 3. Fuse (F2003)
A fuse is located inside of the projector. When the ON (G)/
STANDBY (R) indicator is not lighting, the fuse may be
opened. Please check the fuse as following steps.
The fuse should be used with the following type;
Fuse Part No.: K5E632YY0007
TYPE VBS UBM 6.3A 250V (PF) FUSE
CONQUER. TYPE VBS UBM
How to replace the fuse
1. The fuse is placed on the filter board. Remove the cabinet
top according to the section 2 "Mechanical Disassembly".
2. Take the fuse off from the fuse holder, then replace the new
one with the specified type.
Thermal fuse
Lamp cover switch
Fuse
(F2003)
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