Panasonic PT-RQ22KEJ (serv.man3) Service Manual ▷ View online
INF-47
SECTION 1 SERVICE INFORMATION
< RQ22K >
A Check the voltage.
L2101 : Approx. 3.3 V
NG
A Check IC2201 and peripheral circuit.
A Check the clock waveform.
R2061 : 125 MHz
OK
A Check X2001, IC2061 and peripheral circuit.
A Check the voltage. (AH_RESET)
R2073 : Approx. 3.3 V
NG
A Check IC2071 and peripheral circuit.
A Check IC2001, IC2081 and peripheral circuit.
OK
OK
NG
OK
②
A Check the voltage.
L2131 : Approx. 1.8 V
NG
A Check IC2231 and peripheral circuit.
OK
A Check the voltage.
L2151 : Approx. 1.0 V
NG
A Check IC2251 and peripheral circuit.
OK
INF-48
SECTION 1 SERVICE INFORMATION
< RQ22K >
A Check the voltage.
L2416 : Approx. 1.2 V
NG
A Check IC2408 and peripheral circuit.
A Check the clock waveform.
X2402 : 125 MHz
OK
A Check X2402 and peripheral circuit.
A Check the clock waveform.
X2403 : 148 MHz
NG
A Check X2403 and peripheral circuit.
A Check IC401 and peripheral circuit.
OK
NG
OK
A Check the voltage.
C2532, C2534 : Approx. 0.75 V
NG
A Check IC2402 and peripheral circuit.
OK
A Check the clock waveform.
X2401 : 125 MHz
NG
A Check X2401 and peripheral circuit.
OK
■ IC2601 (FPGA2) operation check
A Check the voltage.
L2411 : Approx. 1.0 V
NG
A Check IC2406 and peripheral circuit.
A Check the voltage.
L2408 : Approx. 1.5 V
OK
A Check IC2405 and peripheral circuit.
A Check the voltage.
L2415 : Approx. 1.0 V
NG
A Check IC2414 and peripheral circuit.
OK
NG
OK
A Check the voltage.
L2404 : Approx. 1.8 V
NG
A Check IC2403 and peripheral circuit.
OK
A Check the voltage.
L2409 : Approx. 3.3 V
NG
A Check IC2404 and peripheral circuit.
OK
INF-49
SECTION 1 SERVICE INFORMATION
< RQ22K >
■ A-P.C.Board operation check
OK
OK
OK
A Check the voltage.
R3981 : Approx. 0.75 V
NG
A Check IC3991 and peripheral circuit.
A Check the clock waveform at IC3501 with no signal input.
Connector A2 pin 37 (SCX2M_LVDSL_CKP) : Approx. 80MHz
NG
A Check IC3501 and peripheral circuit.
A Check the voltage.
R3801 : Approx. 1.2 V
NG
A Check IC3801 and peripheral circuit.
A Check the voltage.
L3871 : Approx. 1.5 V
NG
A Check IC3851 and peripheral circuit.
Follow the section "DG-P.C.Board operation check"
Follow the section "DF/DP/FM-P.C.Board operation check"
OK
■ IC3501 (Main CPU) operation check
OK
OK
OK
OK
OK
A Check the clock waveform.
R3621 : 35.455 MHz
NG
A Check X3501 and peripheral circuit.
A Check IC3716(FLASH ROM) and peripheral circuit.
(If there are still problems, go to next step.)
A
Check the voltage.
Connector A1 pin 1 : Approx. 3.3 V
Connector A1 pin 3 : Approx. 5.0 V
NG
PF
PB
Replace cable between PB4 and A1.
[PF]/[PB]-P.C.Board check and replace.
A Check the voltage.
R3826 : Approx. 1.2 V
NG
A Check IC3821 and peripheral circuit.
A Check IC3721(SRAM) and peripheral circuit.
(If there are still problems, go to next step.)
A Check IC3501(MAIN CPU) and peripheral circuit.
INF-50
SECTION 1 SERVICE INFORMATION
< RQ22K >
■ DG-P.C.Board operation check
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
DG
Check the connectors and cables.
A side: DG1 (B to B connector),
B side: DG2, DG3 (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 cables properly.
* Replace cable if the pin of the connector bend.
DG
Check power supply line <4>
C4429(+) : Approx. 2.5 V
C4430(+) : Approx. 3.3 V
NG
DG Check IC4403, L4401 (Regulators) and
IC4401(CPLD2) peripheral circuit.
DG
Check power supply line <1>
Connector DG3 pin P1 or TPDG1 : Approx. 5.0 V
Connector DG3 pin P2 or L4401 : Approx. 3.3 V
NG
A Check power supply line on A-P.C.Board.
DG
Check power supply line <5>
C4676(+) : Approx. 1.0 V (FP3A_1P0V)
C4655(+) : Approx. 1.8 V (FP3A_1P8V)
C4396(+) : Approx. 2.5 V (FP3A_2P5V)
C4661(+) : Approx. 3.3 V (FP3A_3P3V)
C4690(+) : Approx. 1.0 V (FP3A_MG_1P0V)
C4693(+) : Approx. 1.2 V (FP3A_MG_1P2V)
NG
DG
Check IC4510, IC4507, IC4223, IC4508, IC4514, IC4513,
IC4512(Regulators) and IC4501(FPGA3-1) peripheral
circuit.
DG
Check power supply line <2>
Connector DG1 pins P3, P4 : Approx. 16.0 V
Connector DG1 pin P6 : Approx. 16.0 V
NG
DF Check power supply line on DF-P.C.Board
DG
Check power supply line <6>
C4670(+) : Approx. 1.5 V (FP3A_1P5V)
C4760(+) : Approx. 0.75 V (FP3ADDR_VTT)
NG
DG Check IC4590, IC4240 (Regulators) and IC4501 - IC4504
(DDR 3) and IC4501(FPGA3-1) peripheral circuits.
DG
Check power supply line <8>
C4355(+) : Approx. 1.5 V (FP3_1P5V_1)
C4324(+) : Approx. 0.75 V (FP3DDR_VTT)
NG
DG Check IC4216, IC4213 (Regulators) and IC4205 - IC4208
(DDR 3) and IC4201(FPGA3-2) peripheral circuits.
DG Check power supply line <3>
Connector DG1 pin P5 : Approx. 3.3 V
NG
DG Check L4201.
DG
Check power supply line <7>
C4389(+) : Approx. 1.0 V (FP3_1P0V)
C4365(+) : Approx. 1.0 V (FP3_MGT_1P0V)
C4368(+) : Approx. 1.2 V (FP3_MGT_1P2V)
C4422(+) : Approx. 2.0 V (FP3_2P0V)
C4340(+) : Approx. 1.8 V (FP3_1P8V)
C4346(+) : Approx. 3.3 V (FP3_3P3V)
C4641(+) : Approx. 2.5 V (FP3_2P5V)
C4393(+) : Approx. 1.8 V (FP3_MGT_1P8V)
NG
DG
Check IC4218, IC4220, IC4219, IC4225, IC4214, IC4215,
IC4511, IC4222 (Regulators) and IC4501(FPGA3-1)
peripheral circuit.
DG
Check power supply line <9>
C4805(+) : Approx. 1.5 V (FP3_1P5V_2)
C4755(+) : Approx. 0.75 V (FP3DDR_VTT2)
NG
DG Check IC4243, IC4239 (Regulators) and IC4235 - IC4238
(DDR 3) and IC4201(FPGA3-2) peripheral circuits.
③
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