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MDS-EX77
SERVICE MANUAL AEP Model
UK Model
E Model
MDS-EX77 is the mini disc deck
section in DHC-MD77/EX77MD.
U.S and foreign patents licensed from Dolby Labora- Model Name Using Similar Mechanism MDS-S37
tories Licensing Corporation.
MD Mechanism Type MDM-3A
Optical Pick-up Name KMS-260A/J1N
SPECIFICATIONS
MINI DISC DECK
MICROFILM
TABLE OF CONTENTS NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
1. SERVICING NOTES
1-1. Power Supply During Servicing ..................................... 4 The laser diode in the optical pick-up block may suffer electro-
1-2. Flourescent Indicator Tube/Buttons/ static break-down because of the potential difference generated
Jog and LEDs Check Mode ............................................ 4 by the charged electrostatic load, etc. on clothing and the human
1-3. Selection of Input Signal ................................................ 4 body.
1-4. Retry Cause Display Mode at Record ............................ 5 During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
2. GENERAL .................................................................. 7 repair parts.
The flexible board is easily damaged and should be handled with
3. DISASSEMBLY ........................................................ 19 care.
4. TEST MODE NOTES ON LASER DIODE EMISSION CHECK
4-1. Precautions for Use of Test Mode .................................. 24
4-2. Setting the Test Mode ..................................................... 24 The laser beam on this model is concentrated so as to be focused
4-3. Releasing the Test Mode ................................................ 24 on the disc reflective surface by the objective lens in the optical
4-4. Basic Operations of the Test Mode ................................ 24 pick-up block. Therefore, when checking the laser diode emis-
4-5. Selecting the Test Mode ................................................. 24 sion, observe from more than 30 cm away from the objective lens.
4-6. Operating the Continuous Playback Mode ..................... 25
4-7. Operating the Continuous Recording Mode ................... 25
4-8. EEP Mode ....................................................................... 26 Notes on chip component replacement
4-9. Functions of Other Buttons ............................................ 26