Sony TC-TX333 / TC-TX373 / TC-TX595 Service Manual ▷ View online
– 26 –
• IC Block Diagrams
IC01, 09
µ
PC4570HA
IC03 NJM4558L
IC1A LB1641
IC02 CXA1551P
1 2
4
5
6
7
8
3
VF
VF
DET
DET
REC IN
VCC
PB IN
ON/OFF
LINE OUT
REC OUT
REC IN
PB IN
REC/PB
LINE OUT
REC OUT
16 15
13 12
11
10
9
14
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
1
2 3
4
5 6 7
8
9
OUT1
–IN1
+IN1
VEE
+IN2
–IN2
OUT2
VCC
VCC
– 30 –
6-8. IC PIN DESCRIPTION
• IC04
• IC04
µ
PD75108GF-N14-3BE (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
RVS REC RELAY
O
RVS REC relay control output (Not used in this set.)
2
FWD REC RELAY
O
FWD REC relay control output (Not used in this set.)
3
RVS PLAY RELAY
O
RVS PLAY relay control output (Not used in this set.)
4
FWD PLAY RELAY
O
FWD PLAY relay control output (Not used in this set.)
5
POWER OUT
O
Power output (Not used in this set.)
6
AMS OUT
O
AMS gain control output (Not used in this set.)
7
RESET
I
Reset input (L : Reset)
8
XTAL
—
Oscillator circuit (4.19 MHz)
9
XTAL
—
Oscillator circuit (4.19 MHz)
10
NR OUT
O
Noise reduction signal output (Not used in this set.)
11
REC/PB
O
REC/PB select output (H : REC, L : PB)
12
F/R
O
RVS/FWD select output (H : RVS, L : FWD) (Not used in this set.)
13
BIAS
O
Bias oscillation control output (H : ON, L : OFF)
14
LINE MUTE
O
Line mute control output (H : OFF, L : ON)
15
PB.MUTE
O
PB mute control output (H : OFF, L : ON)
16
REC.MUTE
O
REC mute control output (H : OFF, L : ON)
17
TAPE 4
O
REC equalizer select output (H : METAL) (Not used in this set.)
18
TAPE 2
O
REC equalizer select output (H : CrO
2
)
19
TAPE 1
O
REC equalizer select output (H : NORMAL)
20
M.FWD
O
Reel motor forward direction rotation output
21
M.REV
O
Reel motor reverse direction rotation output
22
H.SPEED
O
Tape speed control output
23
L+
O
Loading motor forward direction rotation output
24
L-
O
Loading motor reverse direction rotation output
25
AU BUS OUT
O
AU BUS signal output
26
VSS
—
Ground
27
F.REC
I
Mechanism deck FWD REC PROOF claw detection signal input (H : REC inhibit)
28
R.REC
I
Mechanism deck RVS REC PROOF claw detection signal input (H : REC inhibit)
29
PACK IN
I
Loading detection signal input
30
AU BUS IN
I
AU BUS signal input
31
AMS IN
I
AMS signal input
32
KEY 1
I
Key switch input 1
33
KEY 0
I
Key switch input 0
34
S.PLAY MODE
I
Mechanism deck tape position detection signal input
35
F.REEL
I
Mechanism deck FWD reel sensor detection signal input
36
R.REEL
I
Mechanism deck RVS reel sensor detection signal input
37
MODE SEL
I
Connect to Ground in this set.
38
CrO2
I
Mechanism deck CrO
2
switch input
39
TAPE IN
I
Mechanism deck HALF switch input
40
TEST PIN
I
Input for test mode. (L : Test mode)
41
NC
I
Connect to Ground in this set.
42, 43
NC
O
Not used in this set.
44
POWER DOWN IN
I
Power detection input
45
NR.LED
O
NR LED output (Not used in this set.)
46
PB.LED
O
PLAYBACK LED output (Not used in this set.)
47
TAPE.LED
O
Cassette indicator LED output
48
CD SYC.LED
O
CD SYNC LED output
49
REC.LED
O
r REC LED output
50
>>.LED
O
) LED output
51
<<.LED
O
0 LED output
52
PAUSE.LED
O
P LED output
– 31 –
Pin No.
Pin Name
I/O
Pin Description
53
>.LED
O
” LED output
54
<.LED
O
“ LED output
55
POWER(GRN)LED
O
1 / u (POWER) LED output
56
POWER(RED)LED
O
1 / u (POWER) LED output (Not used in this set.)
57
NC
—
Not used in this set.
58
VDD
—
Power supply pin
59 – 61
NC
—
Not used in this set.
62
REC/PB
O
REC/PB select output (H : REC, L : PB)
63, 64
NC
—
Not used in this set.
– 32 –
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
SECTION 7
EXPLODED VIEWS
N
N
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories and packing materials are
given in the last of this parts list.
The components identified by
mark
mark
! or dotted line with mark.
! are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
7-1. TOP COVER SECTION
1
3
3
6
2
5
2
4
7
8
• Abbreviation
SP
: Singapore model
MY : Malaysia model
HK : Hong Kong model
JE
HK : Hong Kong model
JE
: Tourist model
1
7-685-872-09 SCREW +BVTT 3X8 (S)
2
4-951-620-01 SCREW (2.6X8), +BVTP
3
3-363-099-51 SCREW (CASE 3 TP2)
* 4
3-031-218-01 TAPE GUIDE (L)
* 5
3-031-219-01 TAPE GUIDE (R)
* 6
3-021-541-01 TOP COVER
7
3-031-313-01 EVA CUSHION
8
3-021-574-01 EVC SPACER
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