Parts/Service for AVR-S80/NX-SW80

Parts/Service for AVR-S80/NX-SW80

Brand: YAMAHA

Category: AV Receiver

Document Type: Parts/Service

Language: EN

Available Languages: EN , ES

Uploaded: Nov. 21, 2025, 7:41 p.m.

Warranty Information

This manual is intended for authorized service personnel and does not constitute an endorsement of service capabilities.

IMPORTANT NOTICE

This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already known and understood by the users, and have therefore not been restated.

WARNING:

Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons, we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative.

IMPORTANT:

The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form. The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor's Service Division.

WARNING:

Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).

IMPORTANT:

Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.

Troubleshooting and error codes

No DIAG menusub-menu
1 DSP THROUGH1. ANALOG BYPASS
2. YSS 0dB
3. YSS Front 0dB
4. YSS FULL BIT
5. YSS FULL BIT F
2 RAM THROUGHRAM 0dB
3 PRO LOGIC1. PRO LOGIC I
2. PRO LOGIC II
4 SPEAKER SET1. MAIN: SMALL 0dB
2. CENTER: NONE
3. LFE/BASS: MAIN
4. Front Mix: 5ch
5 MARGIN CHECK1. MAIN 12 dB MARGIN
2. MAIN 18 dB MARGIN
6 OTHER INPUTEXTERNAL DECODER
7 DISPLAY CHECK1. VFD CHECK (Initial display / 初期表示)
2. VFD DISP OFF (All segments OFF / 全セグメント消灯)
3. VFD DISP ALL (All segments ON 100% / 全セグメント点灯100%)
4. VFD DIMMER (All segments ON 50% / 全セグメント点灯50%)
5. CHECKED PATTERN (ON in lattice / 格子状点灯)
8 MANUAL TEST1. TEST ALL
2. TEST MAIN L
3. TEST CENTER
4. TEST MAIN R
5. TEST REAR R
6. TEST REAR CENTER
7. TEST REAR L
8. TEST LFE
9 FACTORY PRESET1. PRESET INHIBITED (memory initialization inhibited / メモリーの初期化禁止)
2. PRESET RESERVED (memory initialized / メモリーの初期化)
10 AD DATA CHECKPS:042
11 IF STATUSIS1:4403080000
1. INSIDE STATUS 1 (5 Byte)
2. INSIDE STATUS 2 (3 Byte)
3. INSIDE STATUS 3 (4 Byte)
4. CHANNEL STATUS 1 (5 Byte)
5. CHANNEL STATUS 2 (5 Byte)
6. CHANNEL STATUS 3 (5 Byte)
7. CHANNEL STATUS 4 (5 Byte)
8. CHANNEL STATUS 5 (4 Byte)
9. BSI (YSS) 1 (5 Byte)
10. BSI (YSS) 2 (5 Byte)
11. BSI (YSS) 3 (5 Byte)
12. BSI (YSS) 4 (4 Byte)
13. BSI (CS) 1 (5 Byte)
14. BSI (CS) 2 (5 Byte)
15. BSI (CS) 3 (5 Byte)
16. BSI (CS) 4 (5 Byte)
17. BSI (CS) 5 (1 Byte)
18. YSS938-1 (5 Byte)
12 DSP RAM CHECK19. YSS938-2 (5 Byte)
20. YSS938-3 (4 Byte)
21. CS49329 (3 Byte)
22. Mute Trigger (5 Byte)
13 SOFT SWITCH1. YSS938 BUS CHECK
2. PLD/CS BUS CHECK
14 ROM VERSION/CHECK SUM/PORT1. SW MODE
2. MODEL SETTING
3. TUNER DESTINATION
4. TUNER EXIST
5. RDS EXIST
6. VIDEO FORMAT
15 ROM CORRECTION / CHECK SUM1. VERSION
2. CHECK SUM ALL
3. PORT
4. AAC PORT
1. SOFT DATE
2. ROM CORRECTION
3. ROM CORRECTION CHECK SUM
4. ROM CORRECTION REMOCON RECEIVE
5. REMOTE CONTROL CODE DISPLAY
6. PROTECT HISTORY
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