Brand: HITACHI
Category: Audio
Document Type: Manual
Language: EN
Brand: HITACHI
Category: Audio
Document Type: Manual
Language: EN
Uploaded: Nov. 21, 2025, 7:38 p.m.
Manual Publish Date: 2005-04-01
Warranty information is not explicitly detailed in the provided pages.
| Flow Chart | Malfunction | Details |
|---|---|---|
| NO.1 | Power cannot be turned on | Check fuse, AC cord connection, AL+5V line, and secondary circuit rectifying components. |
| NO.2 | Fuse blows out | Check for short circuits in primary and secondary circuit components. |
| NO.3 | Output voltage fluctuates | Check photo coupler circuit and related components. |
| NO.4 | Buzz sound in power circuit | Check rectifying diodes and circuits for shorts. |
| NO.5 | -FL is not outputted | Check -30V supply, load circuit for shorts/leaks. |
| NO.6 | P-ON+9V is not outputted | Check 12V supply, L pulse input, and related components. |
| NO.7 | P-ON+5V is not outputted | Check 5V supply, H pulse input, and related components. |
| NO.8 | TIMER+5V is not outputted | Check H pulse input and replace Q063 if necessary. |
| NO.9 | AL+33V is not outputted | Check 44V supply and related components. |
| NO.10 | AL+18V is not outputted | Check 44V supply and related components. |
| NO.11 | DVD-P-ON+12V is not outputted | Check 12V supply, L pulse output, and related components. |
| NO.12 | DVD-P-ON+3.3V is not outputted | Check H pulse input and related components. |
| NO.13 | DVD-P-ON+5V is not outputted | Check H pulse input and related components. |
| NO.14 | EV+1.2V is not outputted | Check 2.8V supply and replace IC1002. |
| NO.15 | EV+3.3V is not outputted | Check 4V supply and replace IC1004. |
| NO.16 | Fluorescent display tube does not light up | Check 3.3V and -24V/-28V supplies, 500kHz oscillation, and filament voltage. |
| DVD NO.1 | Key operation not functioning | Check key switch contacts, voltage changes, and replace CBA or mechanism. |
| DVD NO.2 | No DVD operation from remote | Check 5V supply, L pulse from receiver, and signal to CN1001. |
| DVD NO.3 | Disc tray open/close issue (with remote) | Check voltage on CN1001 when pressing open/close button. |
| DVD NO.4 | Disc tray open/close issue (no remote/unit) | Replace DVD Main CBA or Mechanism. |
| DVD NO.5 | [No Disc] indication | Replace DVD Main CBA or Mechanism. |
| DVD NO.6 | Picture and sound not operating normally | Replace DVD Main CBA or Mechanism. |
| DVD NO.7 | Picture does not appear normally | Check video signals at CN1601, IC1402, output terminals, and related components. |
| DVD NO.8 | Audio is not outputted | Check analog audio signals at CN1601, IC1201, output terminals, and mute signals. |