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Complete service manual in very good scanning quality with all schematic and PWB graphics as well as assembly & maintenance instructions. A slight drawback is that the rastering of the PWB graphics sometimes makes it a bit difficult to follow fine traces, but no showstopper.
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Purchased the manual that I was looking for at a great price and could download it easily.. Great service experience and for future purchases I plan to use the site. Thank you very much
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Service manual in good quality, it was very helpful to me. Perfect service, I am very satisfied.
Jochen Kelm
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Exellent manual ,it was in great condition,and got all the info i expected,5 stars!!
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I searched the Internet exhaustively for this manual and Owner-Manuals was the least expensive...but provided an excellent reproduction within 4 hours. Very satisified.
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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