– 2 –
TABLE OF CONTENTS
1. SERVICING NOTES............................................... 3
2. GENERAL ................................................................... 6
3. DISASSEMBLY......................................................... 7
4. TEST MODE.............................................................. 12
5. ELECTRICAL ADJUSTMENTS......................... 17
6. DIAGRAMS
6-1. Block Diagram –MAIN Section (1/2) –......................... 21
6-2. Block Diagram –MAIN Section (2/2) –......................... 23
6-3. Block Diagram –DISPLAY/KEY CONTROL/
POWER SUPPLY Section –........................................... 25
6-4. Printed Wiring Board ...................................................... 27
6-5. Schematic Diagram –MAIN Board (1/4) –.................... 29
6-6. Schematic Diagram –MAIN Board (2/4) –.................... 31
6-7. Schematic Diagram –MAIN Board (3/4) –.................... 33
6-8. Schematic Diagram –MAIN Board (4/4) –.................... 35
6-9. IC Pin Function Description........................................... 40
7. EXPLODED VIEWS................................................ 47
8. ELECTRICAL PARTS LIST............................... 50
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
Features• Compact body with newly developed
head-loading system.
Insert or eject an MD with the slightest
touch of a finger.
• Simple-to-charge folding standup
battery charger
Insert the MD player into the folding
standup battery charger for simple, one-
step charging. By connecting an optional
car battery cord to the battery charger, you
can listen to the player in the car without
worrying about battery rundown.
• LCD display built into player for easy
viewing in the car
An easy-to-see LCD display built into the
player allows you to monitor track
numbers when the remote control display
is out of view.
• Personalized sound through Digital
Sound Preset functions
You can store two sets of sound quality
adjustments (made during playback) to
two switches.
• Small body almost the size of a MiniDisc
jacket
• Low power-consumption design for
extended battery life.
• Easy-to-operate earphones remote
control with backlit LCD
• Shock-resistant memory offsets up to 40
seconds of optical read errors.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.