Service manual

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MD-MT180
+2.5V
VCCMICOM
SPINFG
PCNT1
+2.5V
VCC+2.5V
+2.5V
+2.5V
+2.5V
+2.5V
+2.5V
+2.5V
–2.5V
+2.5V
FT
+2.5V
+2.5V
+2.5V
+4.5V
+4.5V
–2.5V
VGBATT
DC-IN (5V)
J801
PS801
CHARGING TERMINAL(1.5V)
BATTERY
(1.2V)
M
M
M
SPINDLE MOTOR
LIFT MOTOR SLED MOTOR M902 M903
M901
MOTOR DRIVER
LB1930M
IC651
REGULATOR
62FP1602
IC902
ENDEC/SERVO/
ATRAC
LR378161
IC201
HEAD DRIVER
74ACT02T MCH6616 CPH5608
IC351 IC353 IC354
MAGNETIC
HEAD
RF SIGNAL
PROCESSOR
IR3R58M
IC101
OPTICAL PICUP
LASER OPIC PICK
16M BIT
D-RAM
IX2824AF
IC202
LCD UNIT
OPTICAL/
LINE-IN
J701
AUDIO AMP.
IR3R54N
IC701
AUDIO AMP.
IR3R59N
IC703
HEADPHONES
KEY SWITCH
PWB
SW401 EJECT SW403
LID OPEN
J703A
AD/DA
CONVERTER
AK4551VT
IC501
PWM/MOTOR DRIVER
LV8201W
IC601
EEPROM
58X2402T
IC402
SYSTEM
MICROCOMPUTER
IX0529AW
IC401
2.3V REGULATOR
6204B23M
IC771
4.5V
REGULATOR
6204B45M
IC873
1.1A
F841
IC801 MM3032A 3.0V REGULATOR
IC802 XP04501
IC803 S80819LN RESET
Q801,Q803,Q891
Q250,Q251,Q257
Q851
Q461
DC/DC
CONVERTER
IR3M14N
IC852
0.4A,DC60V
2.5V UP
CONVERTER
6372C251
IC841
EXCLUSIVE
OR GATE
74HC1G86
IC871
RESET
S80820LN
IC431
IC253,260,809 XP04313 IC256 XP04315 IC258,259,892 XP04501 IC255 NJM022V OPE AMP. IC257 S80808LN RESET IC251 FTD2017 N-CH MOS FET
PLAYBACK SIGNAL
RECORD SIGNAL
Figure 27 BLOCK DIAGRAM