Panasonic PT-DZ21KU / PT-DZ21KE / PT-DS20KU / PT-DS20KE / PT-DW17KU / PT-DW17KE (serv.man2) Service Manual ▷ View online
A
Check and repair IC3010 and the peripheral circuits.
Follow the section "A-P.C.Board operation checks".
A
A
A Check the waveform at R3169(G9), R3174(CLK),
R3173(HS,VS).
Check and repair FL3005,Q3009,Q3010 and
peripheral circuits.
Check the input waveform to the IC3010.
C3063(R),C3062(G),C3064(B),TPA09(HS),TPA10(VS)
A
A Check the waveform at R3478(G9), R3444(CLK),
R3484(HS,VS).
●
RGB2 input checks
Check and repair IC3058 and the peripheral circuits.
Check the picture condition VIDEO, RGB1, Y/C, HDMI
input.
If all four pictures are abnormal, go to NG.
OK
NG
OK
NG
OK
NG
OK
NG
A
INF - 33
A
A
A
Check and repair IC3010 and the peripheral circuits.
Follow the section "A-P.C.Board operation checks".
Check the waveform at R3169(G9), R3174(CLK),
R3173(HS,VS).
Check and repair IC3010 and peripheral circuits.
Check and repair IC3058 and the peripheral circuits.
A
Check the waveform at R3478(G9), R3444(CLK),
R3484(HS,VS).
A
OK
OK
NG
OK
NG
INF - 33
A
A
A
A
A
Check the waveform on R3259(AE_ACT).
Follow the section "A-P.C.Board operation checks".
A Check and repair IC3020 and the peripheral circuits.
●
DVI-D input checks
Check circuits between JK3005 and IC3020.
Check the picture of SDI2 input.
Or select the "P in P" (main RGB1 (no input) and sub
RGB2),
check the picture of RGB2.
A Check and repair R3493(ACT), IC3058 and the
peripheral circuits.
Check the waveform at
R3487(G9),R3446(CLK),R3493(HS,VS).
Check the waveform at
R3289(G9),R3260(CLK),R3259(HS,VS)
Check and repair IC3058 and the peripheral circuits.
OK
NG
OK
OK
NG
OK
NG
NG
INF - 34
A
A
A
A Check the waveform at R3478(G9), R3444(CLK),
R3484(HS,VS).
A Check the waveform at R3169(G9), R3174(CLK),
R3173(HS,VS).
A
A
Check the waveform on R3173(ACT).
Check the picture condition RGB1,RGB2, input.
If all pictures are abnormal, go to NG.
Check and repair IC3010 and the peripheral circuits.
Check circuits between JK3006 and IC3010.
Check and repair IC3058 and the peripheral circuits.
Follow the section "A-P.C.Board operation checks".
●
HDMI input checks
Check and repair R3484(ACT), IC3058 and the
peripheral circuits.
OK
NG
OK
OK
NG
OK
NG
NG
INF - 34
A
A Check and repair IC3071 and the peripheral circuits.
Check the clock frequency on R3444.
3D-SDI signal is inputted : Approx 148.5 MHz
HD-SDI signal is inputted : Approx 74.25 MHz
●
SDI1 input checks (DZ21K/DS20K only)
A
Check the waveform at R3477(G9), R3444(CLK),
R3484(HS,VS).
A
Check the voltage on the power lines
A Check and repair IC3058 and the peripheral circuits.
●
SDI2 input checks (DZ21K/DS20K only)
Follow the section "A-P.C.Board operation checks".
Check and repair IC3058 and the peripheral circuits.
A
A
Check the voltage on the power lines.
IC3059 1pin : Approx 3.3V
IC3401 1pin : Approx 1.2V
Check and repair IC3059,IC3401 and the peripheral
circuits.
Voltage on IC3072 7pin is 0.4 V or less.
A
NG
NG
OK
OK
NG
NG
OK
OK
NG
INF - 35
A
A
Voltage on IC3071 15pin is 0.4 V or less.
Check and repair IC3072 and the peripheral circuits.
A
Follow the section "A-P.C.Board operation checks".
A
A
Check the clock frequency on R3446.
Approx. 74.25 MHz
Check the waveform at
R3487(G9),R3446(CLK),R3493(HS,VS).
Check the voltage on the power lines.
IC3060 1pin : Approx 3.3V
IC3401 1pin : Approx 1.2V
Check and repair IC3060,IC3401 and the peripheral
circuits.
A
A
Check and repair IC3058 and the peripheral circuits.
Check and repair IC3058 and the peripheral circuits.
A
NG
NG
OK
OK
NG
NG
OK
OK
INF - 35
A
FG/FR-P.C.Board checks and replace.
WF-P.C.Board checks and replace.
●
PinP of RGB1/RGB2 input checks
A Check the waveform at
C3166(R),C3165(G),C3167(B),TPA07(HS),TPA08(VS)
●
A-P.C.Board operation checks
Turn off a PinP mode.
Check the picture condition RGB1, RGB2 input.
A
Check the waveform at
R3289(G9),R3260(CLK),R3259(HS,VS).
Check and repair IC3058 and the peripheral circuits.
Follow the section "A-P.C.Board operation checks".
A
A Check and repair IC3064(Sync SW) and the peripheral
circuits.
Check the waveform at
R3487(G9),R3446(CLK),R3493(HS,VS).
A Check and repair IC3058 and the peripheral circuits.
NG
OK
OK
NG
OK
OK
NG
NG
INF - 36
A
A
A
A
A
A
A
Check and repair IC3511 and the peripheral circuits.
Check and repair IC3501,X3502 and the peripheral
circuits.
A
Check the clock waveform.
R3577 : 24.5MH
R3573 : 39.8MH
Check and repair IC3520 and the peripheral circuits.
The voltage of R3695 is 1.5V.
Check and repair IC3510 and the peripheral circuits.
Check the connector of the RW-P.C.Board.
RW1-A3, RW2－WF1
RW Replace the RW-P.C.Board.
A
Check the waveform around IC3501 (no input).
A3 connector 57pin(CLK) : (DZ21K) 159.5MHz,
(DS20K,DW17K) 103.4MHz
The voltage of R3759 is 0.75V.
FG/FR-P.C.Board checks and replace.
WF-P.C.Board checks and replace.
The voltage of R3671 is 1.2V.
A Check and repair IC3501 and the peripheral circuits.
RW
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
INF - 36
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