Sony TC-SD1 Service Manual ▷ View online
— 25 —
3-6. IC BLOCK DIAGRAMS
IC02
CXA1561S
1
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
IREF
IREF
PBIN2
LINEIN2
MPXIN2
MPXOUT2
LINEOUT2
TCH2
TCL2
RECOUT2
NRSW
MOA
MOA
HLS
SSK
HDET
LDET
LLS
V
EE
V
EE
V
CC
HLS
HDET
LDET
LLS
REC AMP
SSK
REC AMP
Mode
Control
V
CC
MODE
RECOUT1
TCL1
TCH1
LINEOUT1
MPXOUT1
MPXIN1
LINEIN1
PBIN1
VCT
IC01
µPC4570HA
1
2 3
4
5 6 7
8
9
OUT1
–IN1
+IN1
VEE
+IN2
–IN2
OUT2
VCC
VCC
IC03
CXA1598S
GHCAL
GPCAL
GL
GH
GP
RECCAL
NC
REC IN
REF
BOOST
VCC
REC OUT
VEE
REC OUT
20
21
22
23
24
19 18 17 16 15 14 13
12
11
F/Q
FQ
FM
FPCAL
DGND
MUTE
NC
REC IN
GND
BOOST
1 2 3 4 5 6 7 8 9 10
PARA
METER
CTRL
— 26 —
ON/OFF
CURRENT
LIMITER
START
CIRCUIT
VREF
OVER HEAT
PROTECT
ON/OFF
CURRENT
LIMITER
1
2
3
4
5
6
7
8
9
10
VCC
VMUTE
VCC
VREF
ERROR
AMP
VREF
ERROR
AMP
VO1
VCC
CN1
EN
EN DISPLAY
GND
NC
CN2
VEE
VO2
~
_1.8V
~_
140uA
COMPARATER
1
2
3
4
5
6
7
8
9
10
GND
MOTOR
DRIVE
NOISE
FILTER
CLAMP
FWD.IN
REV.IN
VCC 1
VCC 2
NOISE
FILTER
MOTOR
DRIVE
MOTOR
DRIVE
MOTOR
DRIVE
T.S.D
O.C.P
FWD/REV/STOP
CONTROL LOGIC
IC04
LA5617
IC06
LB1641
— 27 —
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
I/O
—
O
I
I
—
—
I
I
O
O
O
O
I
I
I
I
I
I/O
I/O
I
I
I
O
O
O
O
I
I
—
—
—
—
I
I
I
I
I
I
I/O
—
O
O
O
O
O
Description
System ground terminal
System clock output (8 MHz)
System clock input (8 MHz)
Reset input
No used
No used
Test terminal
Primary power supply ON/OFF input
Mechanism. AU power supply ON/OFF output
Type 4 recording bias selector output
Type 2 recording bias selector output
Type 1 recording bias selector output
Tape type 2 input
Tape type 4 input
Record safety tab input of side A
Record safety tab input of side A
Head sensor input
12C clock input/output
12C data input/output
Loader open switch input
Loader close switch input
TEST input
Solenoid output
Capstan motor output
Loader open (motor) output
Loader close (motor) output
Panel switch input
Option TC version input
No used
AD ground terminal
AD reference voltage
System power input
Key 1 input
Key 2 input
Half switch input
AMS input
Pulse input
Meter L-CH input
I2C BUSY input/output
No used
REC/PB selector output
RELAY selector output
Bias selector output
LINE mute selector output
Record mute selector output
Pin Name
VSS
OSC-OUT
OSC-IN
RESET
NC
NC
TEST
POWER-IN
POWER-OUT
TYPE4
TYPE2
TYPE1
CHROM-SW
METAL-SW
REC.FWD-SW
REC.REW-SW
MODE-SW
I2C-CLOCK
I2C-DATA
OPEN-SW
CLOSE-SW
TEST
SOLENOIDE
CAPSTAN
OPEN-M
CLOSE-M
PANEL-SW
OP-VERSION
NC
AD-GND
AD-REF
VCC
KEY1
KEY2
HALF-SW
AMS-IN
PULSE
METER-L/R
I2C-BUSY
SYS
REC/PB
RELAY
BIAS
LINE MUTE
REC MUTE
3-7. IC PIN FUNCTION DESCRIPTION
•
CONTROL BOARD IC05 TMP87CH48DF (SYSTEM CONTROL)
— 28 —
Pin No.
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Description
Playback mute selector output
Dolby ON/OFF output
Dolby B/C output
No used
Power ON LED (green) output
Panel LED (blue) output
Level meter 1 (minimum dB) LED (green) output
Level meter 2 LED (green) output
Level meter 3 LED (green) output
Level meter 4 LED (red) output
Level meter 5 (maximum dB) LED (red) output
Tape indicator LED (amber) output
CD synchro LED (red) output
REC LED (red) output
PAUSE LED (orange) output
REW LED (amber) output
FF LED (amber) output
REV LED (green) output
FWD LED (green) output
Pin Name
PB MUTE
DOLBY ON/OFF
DOLBY B/C
STB-R-LED
STB-G-LED
PANEL-LED
LEBEL1-LED
LEVEL2-LED
LEVEL3-LED
LEVEL4-LED
LEVEL5-LED
TAPE-LED
CDSYNC-LED
REC-LED
PAUSE-LED
REW-LED
FF-LED
REV-LED
FWD-LED
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