Sony XR-3753 / XR-C353 Service Manual ▷ View online
– 31 –
1
ILLIN
I
ILLIN signal detection pin (Fixed at “L” in this set)
2, 3
POS 3, 2
I
Tape position detection pin
4, 5
POS 0, 1
6
TAPEON
O
Tape power supply control pin
7
CM_ON
O
Capstan motor control pin
8
LM_LOD
O
Loading motor control pin (loadig direction)
9
LM_EJ
O
Loading motor control pin (eject direction)
10
TUNON
O
Tuner power supply control pin
11
FM_ON
O
FM power supply control pin
12
PW_ON
O
System power supply control pin
13
MUT
O
System muting control pin
At muting: “H”
14
VOLCE
O
Chip enable output pin to electrical volume
15
VOLCLO
O
Clock output pin to electrical volume
16
VOLSO
O
Data output pin to electrical volume
17
AMPON
O
Power amp power supply control pin
18
AMPMUT
O
Power amp muting control pin
At muting: “L”
19
DX_LO
O
DX/local selection control pin
20
AM_MONO
O
AM forced monaural signal output pin
Not used (Open)
21
GND
–
GND
22
DSTSEL
I
Destination setting pin (A/D input)
23
D-BASS
I
D-BASS switch input pin (A/D input)
24, 25
KEYIN1, 2
I
Key input pin (A/D input)
26
RC_IN0
I
Rotary remote commander input pin (A/D input)
27
VSM
I
FM/AM signal meter voltage detection pin (A/D input)
28
AMIFIN
I
AM (MW, LW) IF input pin
29
FMIFIN
I
FM IF input pin
30
VDD2
–
Power supply
31
FM_OSC
I
FM OSC signal input pin
32
AM_OSC
I
AM OSC signal input pin
33
GND
–
GND
34
N.C
–
Not used (Open)
35
EOI
O
Main charge-pump output pin
36
TEST0
I
Test pin
37
AM_STIN
I
AM stereo signal input pin
Not used (Open)
38
SEKOUT
O
SEEK control signal output pin
39
MW_SW
O
MW/SW power supply select pin (Fixed at “L” in this set)
40
BEEP
O
Beep sound output pin
41
KEYACK
O
Key acknowledge signal input pin
42
BU_IN
I
Back up power supply detection pin
METAL control input/output pin
43
MTLSEL
I/O
At initial mode: auto/manual selection input of METAL function
“L”: manual
At nanual mode: METAL on/off output
“H”: on
At auto mode: input at %ª MTLIN
DOLBY control input/output pin (Fixed at “H” in this set)
44
DOLON
I/O
At initial mode: valid/invalid selection input of DOLBY function
At normal mode: DOLBY on/off output
At normal mode: DOLBY on/off output
45
AMSIN
I
Tape music with/without detection pin
“L”: with music
46
ST
I/O
Stereo detection signal input and forced monaural signal output pin
47
AMS_ON
O
At AMS: “L”
48
N_ROUT
O
Forward/reverse control pin
Pin No.
Pin Name
I/O
Function
6-5.
IC PIN FUNCTION DESCRIPTION
MAIN BOARD IC501
µPD17708GC-545-3B9 (MASTER CONTROLLER)
– 32 –
49
TAPMUT
O
Tape muting control pin
At muting: “H”
Illumination power supply control pin
50
ILLON
O
At PW SEL on: ACC on: “H”
At PW SEL off: Power on: “H”
At PW SEL off: Power on: “H”
51
SD_IN
I
Station detection signal input pin
52
NOSESW
I
Front panel removal or attaching detection pin
53
TELMUT
I
Telephpne muting detection pin
“L”: 20 dB audio muting (C353 only)
54
REL
I
Reel table rotation detection pin
55
ACCIN
I
Accessory voltage detection pin
56
TESTIN
I
Test mode setting pin
57
RC_IN1
I
Rotary remote commander input pin (A/D input)
58
PW_SEL
I
Power select switch input pin
59
MTLIN
I
AUTO METAL detection pin
“L”: METAL
60
AD_ON
O
Power supply control pin for A/D conversion
61
KEYSEL
I
Key function setting pin
62
SOUTSEL
I
Active select pin for #• SEKOUT
63
COLOR SEL
I
Illumination color setting pin
“L”: amber, “H”: green
64
LCDCE
O
LCD chip enable output pin
65
LCDCKO
O
LCD clock output pin
66
LCDSO
O
LCD data output pin
67
LCDINH
O
LCD brank indication control pin
68
UNICKI
I
Clock input pin (for SONY BUS) (C353 only)
69
UNISO
O
Data output pin (for SONY BUS) (C353 only)
70
UNISI
I
Data input pin (for SONY BUS) (C353 only) (Fixed at “L” in 3753)
71
UNICKO
O
Clock output pin (for SONY BUS) (C353 only)
72
BUSON
O
BUS ON control signai output pin (for SONY BUS) (C353 only)
73
SYSRST
O
System reset signal output pin (for SONY BUS) (C353 only)
74
VREG
O
CPU regurator output pin (Fixed at “L” in this set)
75
GND
–
GND
76
X_OUT
O
System clock output pin (4.5 MHz)
77
X_IN
I
System clock input pin (4.5 MHz)
78
CE
I
Fixed at “L”
79
VDD1
–
Power supply
80
RESET
I
Reset input pin
Pin No.
Pin Name
I/O
Function
– 33 –
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color
Cabinet's Color
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
•
The mechanical parts with no reference num-
ber in the exploded views are not supplied.
ber in the exploded views are not supplied.
•
Hardware (# mark) list and accessories and
packing materials are given in the last of the
electrical parts list.
packing materials are given in the last of the
electrical parts list.
SECTION 7
EXPLODED VIEWS
11
12
3
1
13
9
#2
#1
#2
#2
4
5
7
MG-25A-136
F781
#3
15
8
6
14
Front panel ass’y
2
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
#4
#4
#2
#4
(1) CHASSIS SECTION
10
1
3-009-294-01 PANEL, SUB
2
3-913-076-01 SPRING (C DOOR), TORSION
3
3-922-165-81 DOOR, CASSETTE
4
X-3367-636-1 LOCK ASSY
* 5
3-014-997-01 INSULATOR
* 6
A-3309-930-A MAIN BOARD, COMPLETE (XR-C353)
* 6
A-3309-931-A MAIN BOARD, COMPLETE (XR-3753)
7
3-915-923-01 SCREW, GROUND POINT
* 8
X-3373-751-1 COVER ASSY
9
1-776-207-11 CORD (WITH CONNECTOR) (POWER)
(XR-C353)
9
1-776-207-41 CORD (WITH CONNECTOR) (POWER)
(XR-3753)
* 10
3-009-809-01 BRACKET (IC)
* 11
3-010-516-11 HEAT SINK (BUS THERE) (C) (XR-C353)
* 11
3-010-517-01 HEAT SINK (BUS NON) (E) (XR-3753)
12
3-338-263-01 CUSHION (U)
* 13
3-009-810-01 CHASSIS
14
3-012-859-01 CAP (25), RUBBER
15
3-937-650-01 PLATE (C), GROUND
F781
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A)
– 34 –
(2) FRONT PANEL SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
SONY
104
105
103
111
112
106
107
109
108
115
114
LCD901
not supplied
(KEY board)
(KEY board)
#5
#5
116
PL902
PL901
117
118
113
101
101
3-009-301-01 BUTTON (D-BASS)
103
3-009-299-01 BUTTON (L2) (+. –) (XR-C353)
103
3-010-472-01 BUTTON (L2) (+. –) (XR-3753)
104
3-009-304-01 BUTTON (RELEASE)
105
3-918-693-01 SPRING (RELEASE)
106
3-904-194-01 EMBLEM (NO. 2.5), SONY (XR-C353)
107
X-3373-668-1 PANEL SUB ASSY (XR-C353)
107
X-3373-669-1 PANEL SUB ASSY (XR-3753)
108
3-009-300-01 BUTTON (SOURCE)
109
3-009-297-01 BUTTON (L)
(+
+ ). SEEK AMS. = 0 –. r. OFF. r. SEL. MUTE) (XR-C353)
109
3-009-297-01 BUTTON (L)
(+
+ ). SEEK AMS. = 0 –. r. OFF. SEL. MUTE) (XR-3753)
111
3-009-308-01 BUTTON (1-3) (
6. 1. 2. 3) (XR-C353)
111
3-010-473-01 BUTTON (1-3) (
6. 1. 2. 3) (XR-3753)
112
3-009-309-11 BUTTON (4-6) (4. 5. 6) (XR-C353)
112
3-010-474-11 BUTTON (4-6) (4. 5. 6) (XR-3753)
113
3-009-312-01 BUTTON (R) B (BTM. LCL. – DISC +) (XR-C353)
113
3-009-315-01 BUTTON (R) (3) (BTM. LCL.
r) (XR-3753)
* 114
3-010-282-01 PLATE (LCD), GROUND
* 115
3-009-305-01 SHEET (REFLECTOR)
* 116
3-009-302-01 PLATE (LCD), LIGHT GUIDE
* 117
3-009-303-01 HOLDER (LCD)
118
3-009-295-01 PANEL, FRONT BACK
LCD901 1-801-586-11 DISPLAY PANEL, LIQUID CRYSTAL (XR-C353)
LCD901 1-801-588-11 DISPLAY PANEL, LIQUID CRYSTAL (XR-3753)
PL901
LCD901 1-801-588-11 DISPLAY PANEL, LIQUID CRYSTAL (XR-3753)
PL901
1-517-633-11 LAMP, PILOT (LCD BACK LIGHT)
PL902
1-517-633-11 LAMP, PILOT (LCD BACK LIGHT)
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