Brand: SANYO
Category: Audio
Document Type: Parts/Service
Language: EN
Parts/Service for DC-MS1
Uploaded: Nov. 21, 2025, 8:30 p.m.
Service Mode (CD)
Entry: Press CD TRAY and REPEAT keys simultaneously, then press another key within one second.
- Key Input Signal Connections: Press COMPUTER REC key. Toggles LEDs and LCD segments between all on and all off. Pressing keys in Table 1 turns on corresponding LCD segment.
- CD Tracking Balance Adjusting Mode: Press EDIT key. Unit automatically powers on and enters tracking balance adjustment status. Adjustments can be made when CD PLAY is pressed.
- CD Operation Display Mode: Press TIME key. Displays CD operations on LCD (see Tables 2 & 3). If a CD error occurs, a calendar number from Table 4 appears, and the display freezes. Press STOP to unfreeze when CD is stopped.
Service Mode (Tape Deck & Amplifier)
Entry: Hold DISPLAY, BASS, and POWER keys while powering down. Set function to TAPE.
- Key Input Signal Connections: Pressing keys turns on corresponding LCD segment or LED (Table 5).
- Tape-Deck Service Mode: Short the "short-point" of the pre-amplifier P.C. board.
System Construction of Micro Processors
Diagram showing the interconnected microprocessors, ICs, and their functions.
Troubleshooting and error codes
| No. | STATE OF CD ERROR | No. | STATE OF CD ERROR |
|---|---|---|---|
| Good | The subcode is not input while the servo is on. | ||
| 1 | Focusing is not possible in focus search. | 6 | Tray open cannot complete. |
| 2 | The subcode is not input during disc startup. | 7 | Tray close cannot complete. |
| 3 | TOC cannot be read. | 8 | Panel open cannot complete. |
| 4 | The focus was lost while the servo was on. | 9 | Panel close cannot complete. |