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JVC XL-R910SL, Service Manual

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JVC XL-R910SL Service Manual Download Page 8

XL-R910SL

1-8

Digital output

When trouble is found in the optical output and coaxial output.

Check signal

(digital) input pin No 1

of NIC1(74HCN04)

Check signal

(digital) input pin No 15

of NCW1(17P)

Check for MR14,NC7

Check signal

(digital) output pin No 4,6

of NIC1(74HCU04)

Check voltage

of NIC1(74HCU04)

pin No14:5V?

No7:0V?

Check voltage

input of RIC2(78L05)

:8V?

Replace NIC1

Replace RIC2

Check voltage

pin No2 of NOM2

(optical transmitter)

:5V?

-Check for NEF1,NEF2,NR10,NR11,NR12
-Replace NOM2
-Check solder of between NOM2 and NJA1
-Check for optical cable and coaxial cable

No

No

No

No

No

No

Yes

Yes

Check voltage

positive of RC7(6800uF/25v)

at main PCB : 12V?

Replace RQ3,

RZD3,RR3

Check for RC7,RD5,RD6,RD7,RD8,

RFU3(2.5A),RCW1,PFU1/PFU2

No

Yes

Yes

Yes

Yes

Yes

Check connector to NCW1(17P)

Check mechanism

Summary of Contents for XL-R910SL

Page 1: ...OR COMPANY OF JAPAN LTD XL R910SL XL R910SL Area Suffix J U S A C Canada B U K E Continental Europe EN Northern Europe This service manual is printed on 100 recycled paper Contents Safety precautions 1 2 Disassembly method 1 3 Troubleshooting 1 6 Description of major ICs 1 11 ...

Page 2: ...rent check Electrical shock hazard testing After reassembling the product always perform an isolation check on the exposed metal parts of the product antenna terminals knobs metal cabinet screw heads headphone jack control shafts etc to be sure the product is safe to operate without danger of electrical shock Do not use a line isolation transformer during this check Plug the AC line cord directly ...

Page 3: ... on the bottom of the body and both sides of the body 2 Disconnect the card wire from connector CN601 on the servo control board 3 Disconnect the 4pin wire from connector CN502 on the servo control board 4 Disconnect the 3pin wire and 8pin wire from connector ACW1 and RCW2 on the main board Please remove a tie band if necessary Please fix the wire again with a tie band when assembling 5 Release th...

Page 4: ...ly Removing the main board See Fig 5 7 Prior to performing the following procedure remove the metal cover 1 Remove the four screws E attaching the each terminal on the rear panel 2 Disconnect the 9pin 8pin and 3pin wire from connector RCW1 RCW2 and ACW1 on the main board 3 Disconnect the card wire from connector NCW1 on the main board 4 Disconnect the 6pin wire from connector CN701 on the servo co...

Page 5: ...om connector RCW1 on the main board 3 The code bushing is pulled out for above 4 Remove the four screws H attaching the power transformer Please remove a tie band if necessary Please fix the wire again with a tie band when assembling Fig 6 Mechanism assembly Power button arm Orange color part Tie band Fig 8 Main board Power transformer board Power transformer H H RCW1 Tie band Fig 7 Cord bushing ...

Page 6: ...e pin No27 p sense of UIC1 5V Check voltage output of RIC3 78L05 at main PCB 5V Check voltage positive of MC1 10uF 50V 15V Replace UX1 SC4 SC5 UIC1 Check for UCW1 8P SR3 UC7 UD1 UQ1 UC6 UR2 Replace RIC3 Check for MC1 MR1 MD1 RCW1 RFU3 PFU1 PFU2 Check voltage pin No46 of UIC1 30V Check voltage negative of RC9 100uF 500V 30V Check voltage negative of RC8 100uF 100V 42V Check for RC8 RD9 RR9 RCW1 PFU...

Page 7: ...utput pin No 1 2 3 4 of NCW1 17P FPC normal Check NR1 2 3 4 Check voltage pin No 9 of NIC1 DAC AK4324 0V Check for mute micom and RCW2 No No No No No No No No No Check solder of NIC1 No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Check analog wave output of AR1 2 3 4 10k Yes Check for AIC1 AIC2 4560 OP amp 4560 No Check analog wave output at pin No1 7 of AIC2 4560 Yes Check solder of AJA1 Check analog ...

Page 8: ...CU04 pin No14 5V No7 0V Check voltage input of RIC2 78L05 8V Replace NIC1 Replace RIC2 Check voltage pin No2 of NOM2 optical transmitter 5V Check for NEF1 NEF2 NR10 NR11 NR12 Replace NOM2 Check solder of between NOM2 and NJA1 Check for optical cable and coaxial cable No No No No No No Yes Yes Check voltage positive of RC7 6800uF 25v at main PCB 12V Replace RQ3 RZD3 RR3 Check for RC7 RD5 RD6 RD7 RD...

Page 9: ...ge pin No 4 6 of RCW3 6P at main PCB 5V Check voltage input of RC1 7805 8V Check voltage positive of RC7 6800uF 25V 12V Replace RIC1 Check for RQ4 RZD4 RR5 No No No No Yes Yes Yes Yes Check wave pin No3 CDR RCT of UCW2 9P at front PCB when power ON No Yes Check wave pin No4 9 of UCW2 9P interface wave No Yes Yes Yes Replace mechanism Check for RC7 RD5 RD6 RD7 RD8 RFU3 2 5A RCW1 PFU1 PFU2 Check pin...

Page 10: ...k connector of NCW1 17P Check mechanism Selecting optical mode by source key Check selecting mode for source at front panel analog No Yes Selecting analog mode by source key Check location VR ana rec at front panel 3o clock No Yes Adjust volume analog rec Check signal analog input pin No 1 3 of ACW1 3P No Yes Check for AC6 AC7 AC22 AD23 AC24 AC25 AR25 AR26 AR27 AR28 Check solder AJA1 Check signal ...

Page 11: ...power supply terminal Master clock select pin Master clock input pin Power down mode pin Audio serial data clock pin Audio serial data input L R clock pin Soft mute pin Double speed sampling mode De emphasis frequency select De emphasis frequency select Pin No Symbol Function 13 14 15 16 17 18 19 20 21 22 23 24 DIF0 DIF1 DIF2 AOUTR AOUTR AOUTL AOUTL AVSS VREF AVDD DZFR DZFL I I I O O O O I O O Dig...

Page 12: ...6MHz Oscillation output terminal 6MHz Power supply terminal 5V Key matrix input terminal AD1 Key matrix input terminal AD2 Connect to ground Power detect input terminal RW I F RW REQUEST input Remote control signal input FL Grid control signal output FL Segment control signal output Power supply terminal 5V FL Segment control signal output FL Segment control signal output Non connect VP 30V FL Seg...

Page 13: ...Printed in Japan 200104 O No A0009 XL R910SL VICTOR COMPANY OF JAPAN LIMITED PERSONAL MOBILE NETWORK BUSINESS UNIT 1644 Shimotsuruma Yamato Kanagawa 242 8514 Japan ...

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