4
KDC-1032/132/132CR
KDC-133/233/234SGY
Ref. No.
Application / Function
Operation / Condition
Focusing, tracking, sled and spindle servo processing.
IC2
CD SIGNAL PROCESSOR
Automatic adjustment (focusing, tracking, gain, offset and balance) operations.
built-in
µ
-COM
Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data
interpolation processing) operations, and microcomputer function.
IC3
4ch BTL DRIVER
Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and
eject operation.
IC4
LPF (LOW PASS FILTER)
2nd low pass filter for audio signals
Q1
APC (AUTOMATIC POWER CONTROL)
LD power control
Q2
D5V SW
ON when P. ON signal goes “Lo”
Q3
Q4 SW
ON when P. ON signal goes “Lo” (SW+5V is ON)
Q4
8V SW
ON when P. ON signal goes “Lo” (Q3 is ON)
Q5, 6
CURRENT AMP
Current driver
COMPONENTS DESCRIPTION
MICROCOMPUTER’S TERMINAL DESCRIPTION
●
SYSTEM
µ
-COM: IC1 on X34- (ELECTRIC UNIT)
Pin No.
Pin Name
I/O
Application
Truth value table
Processing Operation Description
1
TDF DET
I
Panel detection
H: Panel detached, L: Panel attached
2
8EJE SW
I
H: Eject completed
Always L-output for models that do not support 8cm CD
3
NC
-
Not used (output L)
4
AVSS
-
5
L-RST
O
LCD driver reset
H: When panel detached, L: Reset
Normally H, L when Power OFF
6
L-CE
O
LCD driver select
H: Select (Panel communication)
L-output when panel detached
7
AVREF1
-
8
NC
-
Not used (connected to pin 9)
9
IC10-DATA
I/O
E2PROM communication data for IC10
H for no communication
10
IC10-CLK
O
E2PROM communication clock for IC10
H for no communication
11
L-DATAL
I
Communication data from LCD driver
H for no communication, L when panel detached
Pull Down at over X34
12
L-DATAL
O
Communication data to LCD driver
L-output when panel detached
13
L-CLK
O
Communication clock to LCD driver
L-output when panel detached
14
R-DATA
I
Communication data from RDS
L-output for models without RDS
15
R-QUAL
I
Communication qualification from RDS
L-output for models without RDS
16~18
NC
-
Not used (output L)
19
FUNC OUT
O
Function output result
H: OK, L: NG
