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- SERVICING NOTE
- GENERAL
- DISASSEMBLY
- Case and Front Panel Assembly
- Bracket (T), (L) and (R)
- BD Board
- SUB Chassis
- Shutter Assembly
- Over Write Head
- Slider Complete Assembly
- TEST MODE
- ELECTRICAL ADJUSTMENTS
- DIAGRAMS
- Circuit Boards Location
- Block Diagrams
- Waveforms
- Printed Wiring Board — BD Section
- Schematic Diagram — BD Section
- Schematic Diagram — Main Section
- Printed Wiring Board — Main Section
- Printed Wiring Board — Panel Section
- Schematic Diagram — Panel Section
- Printed Wiring Board — HP Section
- Schematic Diagram — HP Section
- IC Block Diagrams
- IC Pin Functions
- EXPLODED VIEWS
- Case and Main Board Section
- Front Panel Section
- Mechanism Deck Section (1) (MDM - 3A)
- Mechanism Deck Section (2) (MDM - 3A)
- ELECTRICAL PARTS LIST
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High quality scan of original Service Manual. Everything´s fine!
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Good scan of the original service manual. All schematics and adjustment procedures are there. It helped me to fix a long lasting problem with the tracking circuitry. The manual also includes the supplementals 1,2 and 3. Included are; electrical schematic's , pcb layout's, mechanical drawing's and exploded views, disassembly manual and maintenance procedures. 236 pages.
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The Service Manual received was helpful. The electronic information is exactly what I needed.
I recomend all of my friends about this technical page.
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High quality scan of service manual. I am satisfied!
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Excellent copies.
I will use "Owner Manual" again a second time.
SECTION 1 SERVICING NOTE
JIG FOR CHECKING BD BOARD WAVEFORM
The special jig (J-2501-124-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be performed are shown as follows. I+3V IOP TEO VC RF : : : : : For measuring IOP (Check the deterioration of the optical pick-up laser) For measuring IOP (Check the deterioration of the optical pick-up laser) TRK error signal (Traverse adjustment) Reference level for checking the signal RF signal (Check jitter)
Mechanism deck VC TEO IOP I + 3V CN110 RF
Jig (J-2501-124-A)
FORCED RESET
The system microprocessor can be reset in the following way. Use these methods when the unit cannot be operated normally due to the overrunning of the microprocessor, etc. Method : Disconnect the power plug, short-circuit the land of RESET.
[MAIN BOARD] (Conductor Side)
CN303 Short land IC401 TP (RESET)
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