Panasonic PT-MZ16K / PT-MZ13K / PT-MZ10K (serv.man2) Service Manual ▷ View online
INF-43
SECTION 1 SERVICE INFORMATION
<MZ16K/MZ13K/MZ10K>
5.7. Troubleshooting
* The letters in the left of inspection items indicate the P.C. Boards related to their respective descriptions.
Please take care for electro-static discharges by using grounded wrist straps to release the electricity from the body.
■ No power <ON(G)/STANDBY(R)> LED does not light in red.
K
P
A
DG
Check connection of each connectors.
AC inlet ~ K1, K1~P1, P5~DG4, P6~K2
NG
Make connections firmly.
K
P
A
DG
Check volteage on pin 7 of connectors A1, DG4 is 3.3V.
OK
DG Replace DG-PCB.
K
P
A
DG
Disconnect connector A1.
Check voltage on pin 7 of connector DG4 is 3.3V.
OK
A Replace A-PCB
K
P Check terminals +, - of D9101 on P-PCB., shorten.
OK
K Replace K-PCB.
K
P
A
DG
Check fuse F9001, R9003,R9004 on K-PCB.
OK
P Replace P-PCB.
K
P
A
DG
And then, disconnect connector DG4. Check voltage on
pins 12, 14 of connector P5 is 3.3V.
OK
DG Replace DG-PCB.
P Replace K-PCB, P-PCB.
OK
NG
NG
NG
NG
NG
INF-44
SECTION 1 SERVICE INFORMATION
<MZ16K/MZ13K/MZ10K>
Check out the failure point of LD by checking the SELF
CHECK or system logs.
Error
Replace the defective LD unit.
No error
Check each connection of connectors.
P3~D1, D2~DR1, A3~DR6, A4~DR2
DR3~LD unit, DR4~LD unit, DR5~LD unit
NG
Make connection firmly
When turn on from standby, the phosphor wheel turns
properly. (The turning noise hearing?)
NG
Check the phospher wheel and connecting.
P At On mode (STANDBY/ON LED lid green), check volt-
age at pins 3, 4 of connector A4 is 3V.
NG
A Check or replace A-PCB.
D
Check the driver input voltage.
At the On mode (STANDBY/ON LED lid green), check
the voltages at pin 1 and pin 4 of connector D1.
Pin1:380V, Pin4:DC16V
NG
P Check or replace P-PCB.
DR Check or replace DR-PCB.
OK
OK
OK
OK
D At On mode (STANDBY/ON LED lid green), check volt-
age at pin 1 of connector D2 is 135V.
NG
D
DR
At On mode (STANDBY/ON LED lid green), check volt-
age at pin 1 of connector D2 while disconnecting the
connector DR1 on DR-PCB.
NG
D Check or replace D-PCB.
A At On mode *STANDBY/ON LED lid green(, check volt-
age at pin 1 of connector A3 is 16V.
NG
A Check or replace A-PCB.
DR Replace DR-PCB.
OK
OK
OK
■ Does not turn the LD unit on. (LIGHT LED blinks 2 or 3 times.)
* It is possible to occor when the AC voltage becomes lower or the power failuer instantaneously. Check also power supply side.
INF-45
SECTION 1 SERVICE INFORMATION
<MZ16K/MZ13K/MZ10K>
■ No picture (Abnormal picture displayed)
Does the On-screen display appear?
Does the test pattern appear?
Check each connection of cables.
Check R2801(G9), R2712(CLK), R2802(HS,VS).
Check the status with a signal input without black pattern.
A-PCB operation check
Make connection firmly
Check IC2801 and peripheral circuit.
A Check waveform at pin 31 (FP2_GA_TXACKP) and 16
(FP2_GA_TXBCKP) at connector A2.
NG
A-PCB operation check.
DG-PCB operation check.
OK
NG
OK
OK
OK
OK
No picture with RGB input.
RGB1 input operation check.
No picture with DVI-D input.
DVI-D input operation check.
No picture with HDMI input.
HDMI input operation check
No picture with DIGITAL LINK input.
DIGITAL LINK input operation check
No picture with SDI input.
SDI input operation check
No picture with all input.
NG
OK
NG
NG
INF-46
SECTION 1 SERVICE INFORMATION
<MZ16K/MZ13K/MZ10K>
■ RGB input operation check
A
Check waveform to IC3020.
C3164(GS), C3165(G), C3166(R), C3167(B), R3239(HS),
R3240(VS)
OK
A Check IC3020 and peripheral circuit.
A Check voltage at L3030, L3032, L3033 is 3.3V.
NG
A Check IC3081 and peripheral circuit.
A Check R3289(G9), R3260(CLK), R3259(HS, VS).
OK
A Check IC2801 and peripheral circuit.
A Check voltage at pins 1of IC3074 and IC3073 is 1.8V.
NG
A Check IC3074, IC3073 and peripheral circuit.
A Check the circuit around IC3020 and JK4.
(L3041, L3040, L3039, Q3033, Q3034, Q3035, etc.)
A Check IC3020 and peripheral circuit.
OK
OK
NG
NG
OK
Check a picture with DVI input.
NG
■ DVD-D input operation check
A Check voltage at pin 1 of IC3074 and IC3073 is 1.8V.
NG
A Check IC3074, IC3073 and peripheral circuit.
A Check R2801(G9), R2712(CLK), R2802(HS,VS).
NG
A-PCB operation check.
Chec a picture with RGB input.
NG
A Check circuit arround IC3020 to JK4.
A Check R3289(G9), R3260(CLK), R3259(HS,VS).
NG
A Check IC2801 and peripheral circuit.
A Check voltage at L3030, L3032, L3033 is 3.3V.
NG
A Check IC3081 and peripheral circuit.
A Check IC3020 and peripheral circuit.
OK
OK
OK
OK
OK
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