Panasonic PT-DZ780 / PT-DW750 / PT-DX820 / PT-DZ780BE / PT-DZ780LBE / PT-DZ780LWE / PT-DZ780WE / PT-DW750BE / PT-DX820BE / PT-DX820LBE (serv.man2) Service Manual ▷ View online
SECTION 1 SERVICE INFORMATION
< DZ780/DW750/DX820 >
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Check the IC3075 and peripheral circuit
Check the waveform at C3013
Check the IC3501, X3601 and peripheral circuit
A Check the L3043, L3042, Q3037, Q3038 and
peripheral circuit
Follow the section "●A-P.C.Board operation check"
Check the waveform at C3011(Y) and C3012(C)
● VIDEO input check
Check the waveform at C3005
Check the IC3062 and peripheral circuit
Check the waveform at C3049
Check the IC3501, X3601 and peripheral circuit
One of the inputs (Y/C, RGB2, HDMI) can be displayed
Follow the section "●A-P.C.Board operation check"
Check the waveform at C3239
Check the Q3036 and peripheral circuit
Check the L3044 and peripheral circuit
● Y/C input check
Check the waveform at C3003(Y) and C3004(C)
Check the IC3062 peripheral circuit
Check the image condition of VIDEO input
OK
OK
NG
NG
OK
OK
NG
NG
NG
NG
OK
OK
OK
NG
NG
OK
INF - 32
SECTION 1 SERVICE INFORMATION
< DZ780/DW750/DX820 >
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A Check the L3039, L3040, L3041, Q3033, Q3034,
Q3035 and peripheral circuit
Check the L3042, L3043, L3044, Q3036, Q3037,
Q3038 and peripheral circuit
Check the IC3010 and peripheral circuit
Check the IC3010 and peripheral circuit
Check the IC3010 and peripheral circuit
● RGB2 input check
Check the IC3058 and peripheral circuit
● RGB1 input check
Check the input waveform of the IC3010
C3059(R), C3058(G), C3060(B), TPA09(HS),
TPA10(VS)
A
A Check the input waveform
R3169(G9), R3174(CLK), R3173(HS, VS)
A Check the IC3058 and peripheral circuit
Check the IC3010 and peripheral circuit
A Check the input waveform
R3411(G9), R3406(CLK), R3416(HS, VS)
Follow the section "●A-P.C.Board operation check"
Check the input waveform
R3169(G9), R3174(CLK), R3173(HS, VS)
A
Check the image condition of RGB1 and HDMI input
A
Check the input waveform of the IC3010
C3063(R), C3062(G), C3064(B), TPA09(HS),
TPA10(VS)
A Check the input waveform
R3411(G9), R3406(CLK), R3416(HS, VS)
Follow the section "●A-P.C.Board operation check"
A
Check the image condition of RGB2 and HDMI input
A
OK
NG
NG
OK
NG
OK
OK
OK
NG
NG
NG
NG
NG
OK
OK
OK
INF - 33
SECTION 1 SERVICE INFORMATION
< DZ780/DW750/DX820 >
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● DVI-D input check
Check the IC3020 and peripheral circuit
● HDMI input check
Check the image condition of RGB1 or RGB2 input
Check the IC3010 and peripheral circuit
A
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Select the [P IN P] mode, set the main input is
RGB1(no input) and sub input is RGB2
Check the image condition of RGB2
Check the waveform of R3259(AE_ACT)
Check the circuit between JK3005 and IC3020
Check the R3430(FB_ACT), IC3058 and peripheral
circuit
A
Check the IC3058 and peripheral circuit
Follow the section "●A-P.C.Board operation check"
Check the input waveform
R3289(G9), R3260(CLK), R3259(HS, VS)
A
Check the IC3058 and peripheral circuit
Follow the section "●A-P.C.Board operation check"
Check the input waveform
R3411(G9), R3406(CLK), R3416(HS, VS)
Check the input waveform
R3169(G9), R3174(CLK), R3173(HS, VS)
Check the waveform of R3173(ACT)
Check the circuit between JK3006 and IC3010
Check the R3416(FA_ACT), IC3058 and peripheral
circuit
Check the input waveform
R3425(G9), R3417(CLK), R3430(HS, VS)
A
OK
NG
OK
OK
OK
NG
NG
NG
OK
NG
OK
OK
OK
NG
NG
NG
NG (RW/RX)
INF - 34
SECTION 1 SERVICE INFORMATION
< DZ780/DW750/DX820 >
A
A Check the input waveform
R3411(G9), R3406(CLK), R3416(HS, VS)
A Check the IC3058 and peripheral circuit
A
Check the clock frequency of R3444
3D-SDI signal : Approx 148.5 MHz
HD-SDI signal : Approx 74.25 MHz
A Check the IC3058 and peripheral circuit
A Check the voltage of IC3072
7 pin : 0.4 V or less
A Check the IC3072 and peripheral circuit
DIGITAL LINK software version is displayed on the
SELF CHECK screen ?
A
Check the voltage
L2005 : 3.3V, L2008 : 1.8V, L2011 : 1.0V
Check the X2001, IC2001-IC2004 and peripheral
circuit
Follow the section "●A-P.C.Board operation check"
Display the [DIGITAL LINK STATUS] and check the
[SIGNAL QUALITY]
Green (-12 dB or lower) or Yellow (-11 to -8 dB)
A
Check the circuit between IC2001 and JK2001
Check the X2001, IC2002, IC2003 and peripheral
circuit
● SDI1 input check (WUXGA model only)
A
Check the voltage of the power lines
IC3059 1pin : Approx 3.3V
IC3351 1pin : Approx 1.2V
A Check the IC3059, IC3351 and peripheral circuit
A Check the circuit between IC2001 and IC3010
Check the IC2001, IC3010 and peripheral circuit
Check the image condition of HDMI input
Check the IC3010 and peripheral circuit
● DIGIGAL LINK input check
[DIGITAL LINK MODE] is set to [AUTO] or [DIGITAL LINK]
?
Set to [AUTO] or [DIGITAL LINK]
NG
NG
OK
OK
NG
NG
OK
OK
NG
OK
NG
OK
NG
OK
NG
OK
INF - 35
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