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There are currently no product reviews.
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The best diagram that I used in a long time. Everything was right on te money. It was easy and fast. Iwoiuld but again when I need a service manual.
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The manual is great help for me, i'm happy to have it,thanks
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Very pleased with manual except that a few more details in the drawings might make the job (not yet done, tut-tut) easier. Should be adequate though. Actually I didn't have to pay for this anyway as I was given credit for another item that wasn't quite complete. Good service, then.
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Very useful manuals, somewhere graphics not very clear!
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A great manual; it contained all the information I required and allowed me to restore the receiver to full working condition!
TX-NR1000
TROUBLE SHOOTING
No sound
Channel numbers of no sound
1 ch
Check a electronic volume.
Are the voltages of #1, #7 and #8 5V?
Yes
1. Set the unit to "TEST-4-00". 2.Is there a 1kHz sine wave signal on #4? 3.Is the signal outputted from #3?
Yes
1.Is there a 1kHz sine wave signal on #14? 2.Is the signal outputted to Q405*?
Yes
Check a circuit after volume.
Volume FL:Q4040 SBL:Q4045 FR:Q4041 SBR:Q4046 SL:Q4043 C:Q4042 SR:Q4044 SW:4047
No Check a route from a power supply circuit to pins above.
No Replace a electronic volume.
No Replace a electronic volume.
2 ch
Check DAC
Are the voltages of #7 and #8 5V?
Yes
Do pulse signals appear on #2 to #4 when Selector switch is changed? Do the digital data appear on #1, #26, #27 and #28 when the unit is set "TEST-4 00"?
Yes
Check periphery of on the the circuits Q400* and Q401*.
Yes
Replace DAC.
DAC FL/FR:Q4020 SL/SR:Q4023 SBL/SBR:Q4025 C/SW:Q4022
No Check the power supply circuit.
No
Check points:NAAR-8166,NADG-8162 and NADG-8163 PC boards
No Replace a broken part on the periphery of Q400* and Q401*.
2 ch
Check a relay.
Does the transistor for speaker control turns "ON"?
Yes
Replace the speaker relay.
No
Check the speaker relay control signal from a microprocessor.
all ch
The signal from DSP IC is not outputted. Check a broken point by "DEBUG MODE"
Is voltage 1.65V on # of P7404?
No
Does R9331 cut on NAPS-8182?
Yes
Is the attachment of socket P3127 on the front optical terminal PC board right?
Yes
Replace R9331 and P3127.
Yes Check a broken point by "DEBUG MODE"
No
No
TX-NR1000
Replace R9331.
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