Panasonic PT-RZ120 (serv.man2) Service Manual ▷ View online
INF-39
SECTION 1 SERVICE INFORMATION
< RZ120 >
■ DVI-D input check
■ HDMI input check
A Check the signal at points below.
R2801(G9), R2712(CLK), R2802(HS, VS)
NG
Follow the section "A-PCB operation check"
A One of the input (RGB1, RGB2) can be displayed.
OK
A Check between IC3020 and JK3005.
A Check 3.3V at points below.
L3030, L3032, L3033
OK
OK
OK
A Check IC3020 and peripheral circuit.
OK
A Check the signal at points below.
R3289(G9), R3260(CLK), R3259(HS,VS)
NG
A Check IC2801 and peripheral circuit.
NG
A Input (DVI-D) can be displayed.
NG
Follow the section "DVI-D operation check"
A Check between IC3010 - JK3006, or X3003(27MHz), IC3010 -
IC3020 and peripheral circuit.
NG
A Check the voltage at points below.
1.2V at L3078, 3.3V at pin 1 of IC3080.
NG
A Check IC3079, IC3080 and peripheral circuit.
OK
A Check between pin 5 of connector A1 and L3030. L3032,
L3033 and peripheral circuit.
A Check 1.8V at points below.
Pin 1 of IC3074, pin 1 of IC3073
NG
A Check IC3074, IC3073 and peripheral circuit.
INF-40
SECTION 1 SERVICE INFORMATION
< RZ120 >
■ DIGITAL LINK input check
DIGITAL LINK firmware version is displayed on the SELF
CHECK screen.
NG
Check DIGITAL LINK status of [DIGITAL LINK STATUS] menu.
[SIGNAL QUALITY]
Green (-12 dB or lower) or Yellow (-11 dB~-8 dB)
NG
A Check between JK2001 and IC2001,
Check X2001, IC2002, IC2003 and peripheral circuit.
Is [DIGITAL LINK MODE] of the setup menu [AUTO] or
[DIGITAL LINK] ?
NG
Set [AUTO] or [DIGITAL LINK].
A Check between IC2001 and IC3010.
Check IC2001, IC3010 and peripheral circuit.
OK
OK
OK
OK
Input HDMI can be displayed.
NG
Follow the section "HDMI operation check"
■ SDI input check
A Check between IC2801 - IC3072, IC2801 and peripheral circuit.
A Check the voltage at pin 7 of IC3072.
Less than 0.4V
NG
A Check IC3072, IC3072 - JK3008 and peripheral circuit.
OK
OK
A Check power supply lines.
IC3059- pin 1 : 3.3V, IC2702 - pin 5 : 1.2V
NG
A Check IC3059, IC2702 and peripheral circuit.
A Check X2002 (125MHz), IC2083, IC2084, IC2001 and peripheral
circuit.
NG
A Check the voltage at points below.
3.3V at L2069, 1.8V at L2071, 1.0V at L2073
NG
A Check IC2086, IC2087, IC2088 and peripheral circuit.
INF-41
SECTION 1 SERVICE INFORMATION
< RZ120 >
■ Main microprocessor operation check
OK
OK
OK
A Check the clock waveform at R3622.
35.455MHz
NG
A Check X3501 and peripheral circuit.
A
Check in order of the following.
(1) IC3716(FLASH ROM) and peripheral circuit
(2) IC3721(SRAM) and peripheral circuit
(3) IC3501(Main CPU) and peripheral circuit
A Check the voltage.
Connector A1 pin 1 : 3.3 V, pin 3 : 5V
NG
Cable check [P6] - [A1], and replace P-PCB.
A Check the voltage.
R3826 : 1.2 V
NG
A Check IC3821 and peripheral circuit.
■ A-PCB operation check
OK
OK
OK
A Check the voltage
C3864 : 1.5 V
NG
A Check IC3851 and peripheral circuit.
A Check the waveform at IC3501 with NO signal input.
Connector A2 pins 21-22 (Differential CLK) : 80MHz
NG
A Check IC3501 and peripheral circuit.
A Check the clock waveform
R3621 : 35.455 MHz
NG
A Check IC3501, X3501 and peripheral circuit.
A Check the voltage
R3801 : 1.2 V
NG
A Check IC3801 and peripheral circuit.
Follow the section "DG/FM-PCB operation check"
OK
OK
A Check the voltage
R3981 : 0.75 V
NG
A Check IC3991 and peripheral circuit.
INF-42
SECTION 1 SERVICE INFORMATION
< RZ120 >
■ DG/FM-PCB operation check
DG
Check the connectors and cables.
A side: DG1, DG3 - DG14, DG16 - DG19, DG33
B side: DG2 (B to B connector)
* Check that the pin of the connector does not bend.
* Check that the cable is slipping off from the housing.
NG
Connect the connector firmly.
* Replace cable if the pin of the connector bend.
FM
Check the connectors and cables.
FM1, FM2, FM3
* Check that the pin of the connector does not bend.
* Check that the cable is slipping off from the housing.
NG
FM
Connect the connector firmly.
* Replace cable if the pin of the connector bend.
* Replace flexible cable if there is a vertical lines noise
on the screen.
DG
Check power supply line <1>
Connector DG1 TPDG6 : 3.3 V, TPDG7 : 5 V
Connector DG12 C6866(+) : 12 V, C6894(+) : 3.3 V,
C6864(+)/C6991(+) : 16 V
NG
DG
P
Check the load on each power supply line.
Replace P-PCB.
OK
OK
FM
Check power supply line <2>
Connector FM3
TP4001 : 3.3 V (or DG5 - pins 5/6/7 : 3.3V)
NG
FM Check the load on 3.3V power supply line.
DG Check power supply line <3>
L5309 : 3.3V, C5343(+) : 1.2V, IC5312 - pin 5 : 3.3V
NG
DG Check IC5301/IC5306/IC5312 (Regulators) and IC5313
(FPGA2) and peripheral circuit.
OK
OK
DG Check power supply line <4>
L5609 : 3.3V, L5608 : 1.8V, C5607(+) : 1.2V
NG
DG Check IC5303/IC5302/IC5602 (Regulators) and
IC5601 (IWARP1) and peripheral circuit.
DG Check power supply line <5>
C5135 : 3.3V, C5140 : 1.8V, C5083(+) : 1.1V
NG
DG Check IC5004 (PMD1000), IC5001 (DDP4421)
and peripheral circuit.
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
OK
OK
OK
OK
DG Check AA_POSENSE line.
IC5004 - pin 34 : 3.3 V
DG Check IC5004 and peripheral circuit.
DG Check AA_PWRGOOD line.
IC5007 - pin 7 : 3.3 V
DG IC5007 - pin 1([PWRGOOD]) : 3.3 V
DG
Check the connection
(B to B connector) to
A-P.C.B, and IC3786/
IC3501 and peripheral
circuit.
DG
Check IC5006/IC5007
(Flash Memory) and
peripheral circuit.
DG Check AA_MTR_ARSTZE line.
IC5004 - pin 48 : 3.3 V
Is the color wheel (CW) rotating ?
D
DR Is LD lighting ?
DG
Replace Flexible cable.
Check the resistance between
DG3/DG4 connector and IC5001.
D
DR Check LD, LD driver.
A
Check IC3501 (Main
CPU) and peripheral
circuit.
3
OK
Click on the first or last page to see other PT-RZ120 (serv.man2) service manuals if exist.