Panasonic PT-VW340Z / PT-VW340ZD / PT-VX410Z / PT-VX410ZD / PT-VX46EA / PT-VX406EA Service Manual ▷ View online
INF-23
SECTION 1 SERVICE INFORMATION
6. Troubleshooting
6. 1. Shutdown system
This projector provides the shutdown function to set into the standby mode immediately for product safety when the projector
has the fan operation error or lamp lightning error.
LED indication status
Shutdown detection
Probable cause
OSD warning
Not lighting or flashing
Power supply block
Fuse : Rated 6.3A
Blown out of fuse (with another reason)
Disconnecting the connectors
Power board failure
Ballast board failure
－
Thermal fuse
⇒ Over 113ºC
Blown out of thermal fuse (with another reason)
Check usage environment
Disconnecting the thermal fuse
－
Sub-microprocessor communication error Sub-microprocessor failure
Disconnection the communication lines
－
LAMP LED lights
Lamp runtime
⇒ More than 4000 hours
(Shutdown in 10 seconds)
Lamp runtime is over
“REPLACE LAMP IN ** MIN-
UTES, POWER WILL TURN OFF
AND GO INTO STANDBY
MODE
AUTOMATICALLY.”
LAMP LED brinks
(0.5 seconds cycle)
Lamp igniting error/Lamp goes off
Lamp cover not installed
Disconnecting the connectors
Lamp error/burning
Ballast block error
－
WARNING LED lights
Temperature exceeds a threshold (*1)
Temperature error
－
Sum of the fan voltage level and filter
clogged level (*2)
Filter clogged
－
WARNING LED blinks
(2 seconds cycle)
No fan sense signal
Each fan sense signal level
⇒ The signal is less than 50% of target
level for more than 5 seconds
Disconnecting the connectors
Fan rotation error/ abnormal
Fan control circuit on the main bard has error.
－
Power supply error
Disconnecting the connectors
Board error
－
*1 It depends on the lamp mode , fan mode or installed environment.
*2 It depends on the various levels of the filter clogged and fan voltage.
The count down number 10 to 1
will be indicated in **.
INF-24
SECTION 1 SERVICE INFORMATION
6. 2. Troubleshooting
* The letters in the left of inspection items indicate the P.C. Boards related to their respective descriptions.
* Please check items with the interlock switch on.
■ Power does not turn ON. ([POWER] LED does not light in red)
Check the connection of each connector
AC inlet, K6B - K602, K6R - K8R
NG
Connect the cables properly
A
Disconnect the connectors [K8R]. Check the short circuit
between pins (5)-(6), (10)-(11) of connector [K8R].
NG
A Replace the [A] P.C.Board
P Check and replace the [P] P.C.Board
OK
OK
INF-25
SECTION 1 SERVICE INFORMATION
■ Lamp does not turn ON.
Confirm the connection of each connector on A-P.C Board
and lamp.
Confirm the lamp fixing screws.
NG
Connect the cables properly
Confirm the lamp condition
NG
Replace the lamp
Is each thermal sensor operating in normal?
NG
Check each thermal sensor and connection
A Confirm that the short circuit between terminals (K6D_1A) and
(K6D_2A). (DC 380V is observed in normal)
NG
A Check or replace [P] P.C.Board
Is each fan rotating when the projector turns on?
NG
Check each fan and connection
A Confirm that the voltage at pin (2) of connector [K8R] changes
from Low to Hi when the power is ON.
NG
A Check or replace [A] P.C.Board
A Confirm that the voltage at pin (1) of connector [K8R] changes
from Low to Hi when the power is ON.
NG
A Check or replace [A] P.C.Board
OK
OK
OK
OK
OK
OK
OK
BQ Replace [BQ] P.C.Board
BQ
Confirm the voltages between pins of connector [CN1] below;
(1) - (3) DC 380V ± 20V
(3) - (4) DC 16.5V ± 1.6V
NG
BQ Check the cable [ZK6D].
P Confirm that the short circuit between terminals (K6D_3A) and
(K6D_2A). (DC 16.5V is observed in normal)
NG
P Check or replace [P] P.C.Board
OK
OK
INF-26
SECTION 1 SERVICE INFORMATION
■ No picture or abnormal picture is output
Confirm each cable connection
Connect the cables securely
Confirm the below with a signal other than all black pattern.
No picture with VIDEO input
Follow the section "VIDEO input check"
No picture with RGB1 input
Follow the section "RGB1 input check"
No picture with RGB2 input
Follow the section "RGB2 input check"
No picture with S-VIDEO input
Follow the section "S-VIDEO input check"
No picture with HDMI input
Follow the section "HDMI input check"
No picture with COMPONENT input
Follow the section "COPONENT input check"
No picture with all of inputs
A
Check each power supply voltage of microprocessor IC(IC301),
Keystone IC (IC2301), TTL2LVDS IC(IC2302), Digital Gamma IC
(IC501), S&H IC (IC561).
NG
A Check IC301, IC2301, IC2302, IC501, IC561 and periph-
eral circuits
A Check the waveform (LDVS output clock) at R401 on IC2302
(TTL2LVDS) circuit
NG
A Check IC2302(TTL2LVDS) and peripheral circuit
A Check the waveform (TTL output signal) at VSIR[1-12], VSIG[1-
12], VSSIB[1-12] on IC561 (S&H) circuit
NG
A Check IIC561 (S&H) and peripheral circuit
A Check the waveform (TTL output clock) at R322 on IC301 (Mi-
croprocessor) circuit
NG
A Check IC301(Microprocessor) and peripheral circuit
A
Check the waveform (LDVS output clock) at TXCK1_P,
TXCK1_N, TXCK2_P, TXCK2_N on IC501 (Digital Gamma)
circuit
NG
A Check IC501(Digital Gamma) and peripheral circuit
A Check the connection of connectors [K5R], [K5G], [K5B]
NG
A Connect the connectors securely
A Replace [A] P.C.Board
(3)
OK
OK
OK
OK
OK
OK
OK
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