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– 23 –
– 22 –
Pin No.
Pin name
I/O
Description
1
C-SCOR
I
CD DSP command data input.
2
JOG B
I
JOG801 input.
3
RMC
I
Remote control signal input.
4
R-MUTE
O
Tuner mute signal output.
5
NC
–
Not used (OPEN).
6
REG-CHK
I
Regulator voltage check input.
7
C-SENSE 2
I
CD-SENSE input.
8
C-CLK
O
CD DSP command clock output.
9
C-DATA
O
CD DSP command data output.
10
C-SENSE 1
I
CD SENSE input.
11
C-SQCK
O
CD SUB-Q read out clock output.
12
C-SQSO
I
CD-SQSO data input.
13
C-MUTE
O
Mute signal output for DSP (IC702).
14
JOG A
I
JOG801 input.
15
R-DATA
O
PLL IC data output.
16
R-CLK
O
PLL IC clock output.
17
R-CE
O
PLL IC chip enable output.
18
R-COUNT
I
PLL IC data input.
19
P-CON
O
POWER ON/OFF control output.
–––––––––––––––––––
20
PL-CONT
O
Plunger ON/OFF control output.
21
VOL-MUTE
O
Audio mute signal output.
––––––––––––––––––––––––––
22
T-HEAD POS
I
Head position detect input.
23
REC
O
REC bias ON/OFF control output.
24
RADIO DST (A)
I
Destination setting terminal.
25
RADIO DST (B)
I
Destination setting terminal.
26
AMS/INIT
I
TC AMS signal input/Initial terminal.
27
R-SHIFT
O
System clock shift output.
28
INPUT 1
O
Loading motor control output.
29
INPUT 2
O
Loading motor control output.
30
OP/CL
I
CD tray open/close detect input.
31
BATT-M
I
Battery voltage detection terminal.
32
KEY 1
I
Key input terminal.
33
KEY 2
I
Key input terminal.
34
KEY 3
I
Key input terminal.
35
KEY 4
I
Key input terminal.
36
DC/BATT-H
I
Battery voltage detection terminal.
37
TC SW
I
Tape tab detect input.
–––––––––––––––
38
RESET
I
System Reset terminal.
39
OSC-IN
I
System clock oscillator input (4.21MHz).
40
OSC-OUT
O
System clock oscillator output (4.21MHz).
41
GND
–
Ground terminal.
42
NC
–
Not used (OPEN).
43
NC
–
Not used (Ground).
44
V REF
I
Reference voltage input.
45
GND
–
Ground terminal.
SECTION 6
DIAGRAMS
6-1. EXPLANATION OF IC TERMINALS
IC801 CXP83124A-044Q (SYSTEM CONTROL) CONTROL BOARD
Pin No.
Pin name
I/O
Description
46
VDDL
O
LCD drive bias control output.
47
VDD3
O
LCD drive bias power supply.
48
VDD2
O
LCD drive bias power supply.
49
VDD1
O
LCD drive bias power supply.
50 – 53
COM0-3
O
LCD common output.
54 – 80
SEG0–SEG26
O
LCD segment output.
81
NC
–
Not used (OPEN).
82
ISS-II
O
ISS-2 control output.
83
ISS-I
O
ISS-1 control output.
84
B/L-CONT
O
Back-light ON/OFF control output.
85
TAPE
O
Function output for TAPE
86
RADIO
O
Function output for RADIO
87
T-MOTOR-CONT
O
Motor control signal output.
88
X-LAT
O
CD DSP command lach output.
89
VDD
–
Power supply.
90
NC
–
Not used (connect to VDD).
91
GND
–
Ground.
92
CLK OUT
O
Sub system clock oscillator (32.768kHz).
93
CLK IN
I
Sub system clock oscillator (32.768kHz).
––––––
94
CD
O
Function output for CD.
95
A-MUTE
O
Audio mute signal output.
96
VR-DATA/CE
O
Volume data/chip enable output.
97
VR-CLK
O
Volume clock output.
98
C-XRST
O
CD reset signal output.
99
WP
I
Wake-up signal input.
100
TAPE END
I
Tape end detect input.
L4 : LW Frequency Coverage Adjustment
L2: FM Frequency Coverage Adjustment
T1 : AM IF Adjustment
T2: FM IF Adjustment
L3 – 2 : LW Tracking Adjustment
CT3: MW Tracking Adjustment
L1 : FM Tracking Adjustment
CT1 : FM Tracking Adjustment
CT5 : LW Tracking Adjustment
L3 – 1 : MW Tracking Adjustment
[TUNER BOARD]
(Component side)
Connect Location :
[TUNER BOARD]
(Conductor side)
Frequency Coverage Adjustment
Adjustment Location :
TP
(VT)
D3
43
C45
C4
C7
R12
C1
C40
4
BCE
ECB
Q42
ECB
CT5
+
–
Digital
voltmeter
100k
Ω
TP (VT)
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
10.7MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust part
Frequency display
reading on digital
voltmeter
Confirmation
87.5MHz
Standard value : 1.2 – 2.0V
L2
108MHz
Adjustment value : 4.0V
Standard value : 3.8 – 4.2V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
87.5MHz
CT1
108MHz