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SECTION 1 SERVICE INFORMATION
< RZ670/RW630 >
A
A
DG-P.C.Board and FM-P.C.Board are easily damaged by static electricity, please be careful as using an antistatic wrist strap.
2
DG
Power-supply line check <1>
DG1 : TPDG6 = 3.3V, TPDG7 = 5V
DG12 : C6866(+) = 12V, C6894(+) = 3.3V,
C6864(+) = 18V
DG
P
Check the loads on each power-supply line
Replace the PC-P.C.Board
FM
Power-supply line check <2>
FM3 : TP4001(or DG5 5,6,7pin) = 3.3V
:
TP4002 (or DG5 2pin) = Approx 12V
(TP4002 is RW/RX model only)
DG
Check the cable connector and flexible cable
(surface) DG1, DG3-DG14, DG16-DG19
(rear surface) DG2 (Board to Board connector)
* Is not bent the pin of connector ?
* Is not aslant insert of FFC cable ?
Connect the cable connector properly
* It replace, if the pin of the connector has bent
[Note]
FM Check the loads on 3.3V and 12V power-supply line
●Main microprocessor operation check
FM
Check the cable connector and flexible cable
FM1, FM2, FM3
* Is not bent the pin of connector ?
* Is not aslant insert of FFC cable ?
Connect the cable connector properly
* It replace, if the pin of the connector has bent
* Replace the flexible cable if there is a vertical line
noise on the screen
E
ac
h
rel
ay
board Check the cable connector
Connector of each relay board
* Is not bent the pin of connector ?
Connect the cable connector properly
* It replace, if the pin of the connector has bent
A
Check in order of the following
IC3716(FLASH ROM) and peripheral circuits
IC3721(SRAM) and peripheral circuits
IC3501(MAIN CPU) and peripheral circuits
● DG/FM-P.C.Board operation check
A Check the voltage of A1 connector
1pin : 3.3V, 3pin : 5V
Check the cable connector between A1 and P6
Replace the P-P.C.Board
The voltage of R3826 is 1.2V
Check the IC3821 and peripheral circuit
A Check the clock waveform
R3622 : 35.455 MHz
A Check the X3501 and peripheral circuit
NG
OK
NG
NG
OK
OK
NG
OK
NG
OK
NG
OK
NG
OK
NG
OK
INF - 37
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