Panasonic PT-DZ21KU / PT-DZ21KE / PT-DS20KU / PT-DS20KE / PT-DW17KU / PT-DW17KE Service Manual ▷ View online
A
* CPU : Central Processing Unit
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Check signal waveform on A3 connector 20 pin.
Follow the section "A-P.C.Board operation checks".
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Check voltage on A3 connector pin 20 is approx 3.3 V.
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・
PC2
Follow the section "DVI-D input checks".
Follow the section "HDMI input checks".
Follow the section "SDI1 input checks".
(DZ21K/DS20K only)
(DZ21K/DS20K only)
Follow the section "PinP of RGB1/RGB2 input checks".
Follow the section "VIDEO input checks".
Follow the section "Y/C input checks".
Follow the section "RGB1 input checks".
Follow the section "RGB2 input checks".
No picture appears during SDI1 input.
(DZ21K/DS20K only)
(DZ21K/DS20K only)
Check the input signal. (other than all black picture)
No picture appears during VIDEO input.
No picture appears during Y/C input.
At "P in P", RGB1/RGB2 input does not appear
No picture appears in every input mode.
No picture appears during RGB2 input.
No picture appears during DVI-D input.
No picture appears during HDMI input.
No picture appears during RGB1 input.
■ No image appears (picture is abnormal)
Check and repair the IC3501 (main CPU), IC3515
(AND gate) and the peripheral circuits, or replace
the PC2-P.C.Board.
(AND gate) and the peripheral circuits, or replace
the PC2-P.C.Board.
RW Replace the RW-P.C.Board.
Check voltage on A3 connector pin 39 is approx 3.3 V.
RW
Check the connector of the RW-P.C.Board.
RW1-A3, RW2 －WF1
RW1-A3, RW2 －WF1
FG/FR-P.C.Board checks and replace.
WF-P.C.Board checks and replace.
WF-P.C.Board checks and replace.
No picture appears during SDI2 input.
(DZ21K/DS20K only)
(DZ21K/DS20K only)
Follow the section "SDI2 input checks".
(DZ21K/DS20K only)
(DZ21K/DS20K only)
Check that all the cables are connected properly.
Connect the cables properly.
Follow the section "Main CPU operation checks".
NG
OK
NG
NG
NG
NG
OK
OK
OK
OK
INF - 29
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Check the picture condition Y/C, RGB1, RGB2, HDMI input.
If all four pictures are abnormal, go to NG.
If all four pictures are abnormal, go to NG.
Follow the section "A-P.C.Board operation checks".
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Check the waveform at C3013.
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Check and repair FL3001,IC3062 and peripheral
circuits.
circuits.
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Check and repair IC3501, X3501 and the peripheral
circuits.
circuits.
Check the picture condition VIDEO,RGB1,RGB2,HDMI
input.
If all four pictures are abnormal, go to NG.
input.
If all four pictures are abnormal, go to NG.
Follow the section "A-P.C.Board operation checks".
Check the waveform at C3011(Y), C3012(C).
A
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Check and repair FL3003, FL3004, IC3062 and
peripheral circuits.
peripheral circuits.
Check and repair FL3002, FL3003, FL3004, Q3005,
Q3006, and peripheral circuits.
Q3006, and peripheral circuits.
● RGB1 input checks
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Check and repair IC3501, X3501 and the peripheral
circuits.
circuits.
Check the picture condition VIDEO, RGB2, Y/C, HDMI
input.
If all four pictures are abnormal, go to NG.
input.
If all four pictures are abnormal, go to NG.
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● Y/C input checks
● VIDEO input checks
Check and repair IC3010 and peripheral circuits.
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Check the input waveform to the IC3010.
C3059(R),C3058(G),C3060(B),TPA09(HS),TPA10(VS)
C3059(R),C3058(G),C3060(B),TPA09(HS),TPA10(VS)
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
A
INF - 30
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A
A
Check and repair IC3010 and the peripheral circuits.
Follow the section "A-P.C.Board operation checks".
A
A
Check the waveform at R3169(G9), R3174(CLK),
R3173(HS,VS).
R3173(HS,VS).
Check and repair FL3005,Q3009,Q3010 and
peripheral circuits.
peripheral circuits.
Check and repair IC3010 and peripheral circuits.
Check and repair IC3058 and the peripheral circuits.
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Check and repair IC3010 and the peripheral circuits.
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Check the input waveform to the IC3010.
C3063(R),C3062(G),C3064(B),TPA09(HS),TPA10(VS)
C3063(R),C3062(G),C3064(B),TPA09(HS),TPA10(VS)
A
A
Check the waveform at R3478(G9), R3444(CLK),
R3484(HS,VS).
R3484(HS,VS).
Check the picture condition VIDEO, RGB1, Y/C, HDMI
input.
If all four pictures are abnormal, go to NG.
input.
If all four pictures are abnormal, go to NG.
A
Check the waveform at R3478(G9), R3444(CLK),
R3484(HS,VS).
R3484(HS,VS).
Follow the section "A-P.C.Board operation checks".
Check the waveform at R3169(G9), R3174(CLK),
R3173(HS,VS).
R3173(HS,VS).
A
Check and repair IC3058 and the peripheral circuits.
● RGB2 input checks
OK
NG
OK
NG
OK
NG
OK
OK
NG
OK
NG
NG
A
INF - 31
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A
A
A
A
A
A
Check the waveform at R3169(G9), R3174(CLK),
R3173(HS,VS).
R3173(HS,VS).
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Check and repair IC3010 and the peripheral circuits.
Check circuits between JK3006 and IC3010.
Check and repair IC3058 and the peripheral circuits.
A
Check and repair R3484(ACT), IC3058 and the
peripheral circuits.
peripheral circuits.
Follow the section "A-P.C.Board operation checks".
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Check and repair IC3020 and the peripheral circuits.
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Check the waveform at R3478(G9), R3444(CLK),
R3484(HS,VS).
R3484(HS,VS).
Follow the section "A-P.C.Board operation checks".
Check and repair IC3058 and the peripheral circuits.
● HDMI input checks
Check the waveform on R3173(ACT).
Check the picture condition RGB1,RGB2, input.
If all pictures are abnormal, go to NG.
If all pictures are abnormal, go to NG.
Check the waveform on R3259(AE_ACT).
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.
Or select the "P in P" (main RGB1 (no input) and sub
RGB2),
check the picture of RGB2.
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Check and repair R3493(ACT), IC3058 and the
peripheral circuits.
peripheral circuits.
● DVI-D input checks
A
A
Check the waveform at
R3487(G9),R3446(CLK),R3493(HS,VS).
R3487(G9),R3446(CLK),R3493(HS,VS).
Check the waveform at
R3289(G9),R3260(CLK),R3259(HS,VS)
R3289(G9),R3260(CLK),R3259(HS,VS)
OK
NG
OK
OK
NG
OK
NG
NG
OK
NG
OK
OK
NG
OK
NG
NG
INF - 32
Click on the first or last page to see other PT-DZ21KU / PT-DZ21KE / PT-DS20KU / PT-DS20KE / PT-DW17KU / PT-DW17KE service manuals if exist.