Panasonic PT-EX12KU / PT-EX12KE Service Manual ▷ View online
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Specifications
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This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-
jector, it will automatically turn off by operating one of the following protection circuits.
jector, it will automatically turn off by operating one of the following protection circuits.
Circuit Protections
Fuses are located inside of the projector. If all the indicators are not lighting,
the fuse (F2601) may be opened. If the STAND-BY indicator is lighting and
others are blinking, one of the fuses (F2602) may be opened. If fuse (F2602)
opens, the power supply to the LAMP1/LAMP2 will be cut off.
Check the fuses as following steps.
The fuses should be used with the following type;
the fuse (F2601) may be opened. If the STAND-BY indicator is lighting and
others are blinking, one of the fuses (F2602) may be opened. If fuse (F2602)
opens, the power supply to the LAMP1/LAMP2 will be cut off.
Check the fuses as following steps.
The fuses should be used with the following type;
Location : F2601
Fuse Part No. : K5E153BZA003
TYPE 15A 250V FUSE
0215015.MXEP, LITTEL
Fuse Part No. : K5E153BZA003
TYPE 15A 250V FUSE
0215015.MXEP, LITTEL
How to replace the fuses
1. Remove the cabinet top, main board following to "Me-
chanical disassembly".
2. Remove the fuses F2601, F2602 on the line filter board.
To install the fuses, take reversed step in the above.
Fuses (F2601, F2602)
Location : F2602
Fuse Part No. : K5E632BZA003
TYPE 6.3A 250V FUSE
021506.3MXEP, LITTEL
Fuse Part No. : K5E632BZA003
TYPE 6.3A 250V FUSE
021506.3MXEP, LITTEL
Line filter
board
board
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Circuit Protections
There are the thermal fuses (SW903, SW904) inside of the projector to de-
tect the internal temperature rising abnormally. When the internal tempera-
ture around lamps reaches near 128˚C, the thermal fuse will open to cut off
the power supply to the lamp power circuit.
If one of the thermal fuses opens, the projector cannot turn on the lamps. If
the <STANDBY> indicator is lighting and others are blinking, one of the ther-
mal fuses may be opened. Thermal fuse replacement is required. The re-
placement of the thermal fuses must be done with a set of 2 fuses at once.
tect the internal temperature rising abnormally. When the internal tempera-
ture around lamps reaches near 128˚C, the thermal fuse will open to cut off
the power supply to the lamp power circuit.
If one of the thermal fuses opens, the projector cannot turn on the lamps. If
the <STANDBY> indicator is lighting and others are blinking, one of the ther-
mal fuses may be opened. Thermal fuse replacement is required. The re-
placement of the thermal fuses must be done with a set of 2 fuses at once.
Thermal fuses (SW903, SW904)
SW903
SW904
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Sensor switche (SW6581)
Lamp cover sensor
switch (SW6581)
switch (SW6581)
This projector provides a lamp cover sensor switch (SW6581). The lamp cover sensor switch detects whether the
lamp cover is closed securely. If lamp cover is opened or not closed completely, the drive signal to the lamp circuit
is cut off. After opening the lamp cover for replacing the lamp ass’y, place the lamp cover correctly otherwise the
projector cannot turn on.
lamp cover is closed securely. If lamp cover is opened or not closed completely, the drive signal to the lamp circuit
is cut off. After opening the lamp cover for replacing the lamp ass’y, place the lamp cover correctly otherwise the
projector cannot turn on.
CAUTION
DO NOT LEAVE THE PROJECTOR WITH THE AC POWER CORD
CONNECTED UNDER AN ABNORMAL CONDITION. IT MAY RE-
SULT IN FIRE OR ELECTRIC SHOCK.
DO NOT LEAVE THE PROJECTOR WITH THE AC POWER CORD
CONNECTED UNDER AN ABNORMAL CONDITION. IT MAY RE-
SULT IN FIRE OR ELECTRIC SHOCK.
Indicators
The projector is shut down; and the <STANDBY> indicator is
lighting and other indicators are blinking.
lighting and other indicators are blinking.
When the projector detects an abnormal condition (SW903, SW904, - opens,
or SW6581 - opens), it will be automatically shut down to protect the inside
of the projector and the <STANDBY> indicator lights on and other indicators
blink. In this case, unplug the AC power cord and check that the filter car-
tridge and lamp cover are installed securely, and the plug it, and turn on the
projector once again to verify operation. If the projector cannot be turned on
and these indicators are still lighting and blinking, unplug the AC power cord.
See the troubleshooting chapter.
or SW6581 - opens), it will be automatically shut down to protect the inside
of the projector and the <STANDBY> indicator lights on and other indicators
blink. In this case, unplug the AC power cord and check that the filter car-
tridge and lamp cover are installed securely, and the plug it, and turn on the
projector once again to verify operation. If the projector cannot be turned on
and these indicators are still lighting and blinking, unplug the AC power cord.
See the troubleshooting chapter.
STANDBY indicator lights
on and other indicators
blink.
on and other indicators
blink.
Circuit Protections
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