Block Diagram - Kenwood DM-3090 Service Manual

HEAD DRIVE
RECORDING HEAD Q1251~Q1254
MD
M901
SPINDLE MOTOR
M
PICK UP UNIT
FOCUS
M902 TRACKING
SLED MOTOR F
LIGHT
RECEIVING A E–FSIGNAL
M
SECTION
ERROR B
SIGNAL
E
RF1
RF2
LIGHT
RECEIVING
RF3
SECTION
RF
RF4
LASER DIODE
MONITOR DIODE
WRITE PRO
DIRECT SWITCH
SW1952
LEAD INSWITCH
SW1953
PLAYSWITCH
SW1954
RECSWITCH
SW1955
LOADING SWITCH
SW1956
IC1601
M56758FP
MOTOR
DRIVER
M903
M
LOADING MOTOR
HEAD UP/DOWN
D4.3V
SIGNAL
IC1251
IC1101
IR3R55
A–BSIGNAL
RF
SIGNAL
RF1 ~ RF4SIGNAL
PROCESSOR
D3.2V
D3.2V
D4.3V
5-CH
D6.5/4.75 ~ 5.25V
D3.2V
OSCILLATOR
XL1201
(33.8688MHz)
IC1906
AND GATE TC7ST08F
IC1907
CLOCK GENERATOR TC92ASF
ENDEC
IC1990
ATRAC
INVERTOR 74AC04FS
IC1201
LR37648
MD MICRO COMPUTER
IC1202
IX2474AF
4M
S29294A
DRAM E
D3.2V
VOLTAGE
DIGITAL
REGULATOR
POWER
3.2V
D4.3V
CNP1904
IC1916
AND GATE
DIGOUT(EIAJ)
1
74VHC08F
GND
2
3 GND
4 DIGIN(EIAJ)
BACKUP
IC1401
IX0227AW
MD SYSTEM
MICRO
COMPUTER
D3.2V
MECHAN1SM
6.5/4.75~5.25V
IC1402
2
PROM
CNP1902
1 PDOWN
BACKUP
2
3 LOAD IN
4 RESET
MD-ST
5
DSCK
6
SERCH
7
KDATA
8
9 MDDATA
10 DSTB
D.GND
11
12 D.GND
13 D.GND
D.GND
14
15 DVDD
16 DVDD
SYSCLK
17
18 ADDATA
19 LRCLK
BCLK
20
DADATA
21
22 DFS1
23 DFS0
24 MUTE