Components Description; Microcomputer's Terminal Description - Kenwood KDC-C719/C719Y Service Manual

CD PLAYER UNIT (X32-5810-00)
Ref. No. Application / Function
IC1 DSP
IC4 A5V regulator
IC5 Driver
µ-com
IC7
IC8 Memory IC
IC9 Reset IC
Q1 Current AMP
Q4~8 AMUTE SW
Q9 SW SA5V
Q10 PON SW
Q11 CH RESET SW
Q13 CH control SW
Q14 CH MUTE SW
Q16 SW8V
Q17,18 8V SW
Q19 8V/7V SW
Q20 BU5V detection SW
Q21,22 BU5V
Q30 Anti-scratch measure
Q31 SW

MICROCOMPUTER'S TERMINAL DESCRIPTION

SYSTEM MICROCOMPUTER: 784214YGC132A/784217YGC106A (X32: IC7)
Pin No. Pin Name I/O
1 NOR/RW
2 /TSTB
3 P_CON
4 FOK
5 /XTALEN
6 RST
7 SA0
8 SSTB
9 VDD
10 X2
11 X1
12 VSS
13 XT2
14 XT1

COMPONENTS DESCRIPTION

Servo control
Power supply for 5V audio
Driving spindle motor, loading/eject operation, elevation operation, driving pick-up ACT
Servo control, LX_BUS communication control
ELV operation parameter, Store servo coefficient
Adjust the current to be applied to the laser
AMUTE
PON
CH RESET
CH MUTE
8V/7V switching
BU5V detection
Supply power to IC7
Switching loading, eject, and spindle
O Disc detection result
O TEXT data strobe signal
O Power supply control signal for video CH
I Focus-ON status signal input
O Servo IC oscillation stop signal
O Servo IC reset terminal
O Servo IC communication address setting
O Servo IC communication strobe
Positive power supply voltage connection terminal
Oscillator connection terminal 2
I Oscillator connection terminal 1
GND electric potential connection
Sub clock connection terminal 2
I Sub clock connection terminal 1
Operation / Condition / Compatibility
Application
KDC-C719/C719Y
KDC-C719/G4
3