JVC KD-G120 Schematic Diagrams page 3

Block diagram
(For KD-G120,KD-G120R,KD-G123,KD-G124,KD-G125 and KD-G126)
VF1, VF2, VT1
VT2, LD, MD
PICK UP
TRACKING+
TRACKING-
FOCUS+
FOCUS &
FOCUS-
TRACKING
COIL
CN001
FEED+
LOAD&FEED
FEED-
MOTOR
POSITION SET
PSW
SWITCH
SPINDLE+
SPINDLE
SPINDLE-
MOTOR
SW1, SW2
SW1, SW2
LCD & Key control section
Only for IC681 S601 to S616
KEY MATRIX
KD-G120R REMOCON
REMOCON KEY0
KEY1
IC661 KEY2
LCD DRIVER
ENC1
LCD.SCK
LCD.SO ENC2
LCD.CE
JS686
COM1
ENCODER
COM2
COM3
S1 to S52
D630 to D649
LCD1 D652,D653
LCD DISPLAY
LIGHTING
DISPLAY
Main amplifier & CD servo control section
LM,MSM
TRV,TVD CD.RESET,STATUS
TRD,FOD SUBQ,SQCK,TLOCK
ECM,ECS FLOCK,CD.SENSE
IC541
IC561
KICK MLD,MDATA,MCLK
BTL
DSP&DAC
DRIVER
SPINDLE+
SPINDLE-
FEED+
FEED-
TRACKING+
TRACKING-
FOCUS+
FOCUS-
SW1, SW2, PSW
VF1
VF2
LDON,ARF
VT1
BDO,OFTR
VT2
RFDET
MD
VDET
LD
FBAL,TBAL
TE,FE
IC501
RFENV
RF AMP
OUTL
KEY0
OUTR
KEY1 IC151
KEY2
CD L.P.F.
LCD.SCK
LCD.SO
LCD.CE
REMOCON
ENC1
ENC2
TU701
FM/AM
TUNER
TU.L-CH
TU.R-CH
MICOM
.MUTE
Q861
MUTE
MUTING RR/SUB.W
RL/SUB.W
SD/ST
MONO
SSM,IFC
MUTE
FM/AM
EO
FMOSC
S.METER
OUTLF, OUTLR
SEEK/STOP
OUTRF, OUTRR
IMIF.COUNT
SDA
IC301
SCL
E.VOLUME
IC801
MICOM
EACH BLOCK
IC901
REGULATOR
CD.LCH
CD.RCH
ANT
Q332, Q432
LINE OUT
LINE OUT
IC321
POWER
AMP.
FRONT LEFT (+)
FRONT LEFT (-)
FRONT RIGHT (+)
FRONT RIGHT (-)
REAR LEFT (+)
REAR LEFT (-)
REAR RIGHT (+)
REAR RIGHT (-)
SPK
BATTERY
2-1