Sony XR-C440 / XR-C450 / XR-C450W / XR-P600C Service Manual ▷ View online
– 39 –
6-7.
IC PIN FUNCTION DESCRIPTION
MAIN BOARD IC501
µPD78058GC-913-3B9 (SYSTEM CONTROL)
1
DSEL
I
Destination setting pin
2
RC_IN0
I
Rotary remote commander input pin (A/D input)
3
SD_IN
I
Station detection signal input
4
AVSS
—
GND
5
ST
I/O
Stereo detection signal input and forced monaural signal output pin
6
PLLCE
O
PLL chip enable output pin
7
AVREF1
I
A/D reference voltage input pin
8
PLLSI
I
PLL data input pin
9
PLLSO
O
PLL data output pin
10
PLLCKO
O
PLL clock output pin
11
P.ST_IN
I
Polar stereo input pin
12
LCDSO
O
LCD data output pin
13
LCDCKO
O
LCD clock output pin
14
LCDCE
O
LCD chip enable output pin
15
LCDINH
O
LCD blank indication control pin
16
UNISI
I
Data input pin (for SONY BUS)
17
UNISO
O
Data output pin (for SONY BUS)
18
UNICKI
I
Clock input pin (for SONY BUS)
19
UNICKO
O
Clock output pin (for SONY BUS)
20
BUSON
O
BUS ON control signal output pin (for SONY BUS)
21
SYSRST
O
System reset signal output pin
22
AMPON
O
Power amp power supply control pin
23
AMP_MUT
O
Power amp muting control pin. At muting: “L”
24
TUNON
O
Tape power supply control pin
25
FM_ON
O
FM power supply control pin
26
PW_ON
O
System power supply control pin
27
COLOR
I/O
Illumination color selection input/output pin
At initial mode: valid/invalid selection input of color select function
At normal mode: color selection output
At initial mode: valid/invalid selection input of color select function
At normal mode: color selection output
28
AMSON
I
Tape AMS control pin. At AMS: “L”
29
REL
I
Reel table rotation detection pin
30
MTLIN
I
AUTO METAL detection pin. “L”: METAL
31, 32
POS3, POS2
I
Tape position control pin
33
GND
—
GND
34, 35
POS0, POS1
I
Tape position control pin
36
LM_LOD
O
Loading motor control pin (loading direction)
37
LM_EJ
O
Loading motor control pin (eject direction)
38
N/R_OUT
O
Forward/reverse control pin
39
P.ON
O
Polar stereo detection output pin. At polar stereo on: “H”
40
CM_ON
O
Capstan motor control pin
41
TAPON
O
Tape power supply control pin
42
COLSEL
I
Illumination color setting pin. “L”: amber, “H”: green
43
RC_IN1
I
Rotary remote commander input pin (A/D input)
44
TEST
I
Test mode setting pin
Pin No.
Pin Name
I/O
Function
– 40 –
45
ILLON
O
Illumination power supply control pin
At PW SEL on: ACC on: “H”
At PW SEL off: Power on: “H”
At PW SEL on: ACC on: “H”
At PW SEL off: Power on: “H”
46
BEEP
O
Beep sound output pin
47
MUT
O
System mutig control pin. At muting: “H”
48
VOLCE
O
Chip enable output pin to electrical volume
49
SUBCE
O
Chip enable output pin to sub volume (not used)
50
VOLCKO
O
Clock output pin to electrical volume
51
SUBCKO
O
Clock output pin to sub volume (not used)
52
VOLSO
O
Data output pin to electrical volume
53
TAPMUT
O
Tape mutig control pin. At muting: “H”
54
DOLON
I/O
DOLBY control input/output pin
At initial mode: valid/invalid selection input of DOLBY function
At normal mode: DOLBY on/off output
At initial mode: valid/invalid selection input of DOLBY function
At normal mode: DOLBY on/off output
55
DOLBC
I/O
DOLBY B/C selection pin
At initial mode: valid/invalid selection input of DOLBY C function
At normal mode: DOLBY B/C selection output. “L”: DOLBY B, “H”: DOLBY C
At initial mode: valid/invalid selection input of DOLBY C function
At normal mode: DOLBY B/C selection output. “L”: DOLBY B, “H”: DOLBY C
56
AMSIN
I
Tape music with/without detection pin. “L”: with music
57
MTLSEL
I/O
METAL control input/output pin
At initial mode: auto/manual serection input of METAL function. “L”: manual
At manual mode: METAL on/off output. “H”: on
At auto mode: input st 30 MTLIN
At initial mode: auto/manual serection input of METAL function. “L”: manual
At manual mode: METAL on/off output. “H”: on
At auto mode: input st 30 MTLIN
58
AD_ON
O
Power supply control pin for A/D conversion
59
RAMBU
I
Reset detection pin of RAM
60
RESET
I
Reset input pin
61
SIRCS
I
SIRCS signal input pin
62
BU_IN
I
Buck up power supply detection pin
63
PW_SEL
I
Power select switch input pin
64
ACCIN
I
Accessory voltage detection pin
65
NOSESW
I
Front panel removal or attaching detection pin
66
TELMUT
I
Telephone muting detection pin. “L”: 20dB audio muting
67
KEYACK
O
Key acknowledge signal input pin
68
VDD
—
Power supply
69
OSCOUT
O
Main system clock output pin (5MHz)
70
OSCIN
I
Main system clock input pin (5MHz)
71
GND
—
GND
72
XT_OUT
O
Sub system clock output pin (32.768kHz)
73
XT_IN
I
Sub system clock input pin (32.768kHz)
74
AVDD
—
Power supply
75
AVREF0
I
A/D reference voltage input pin
76, 77 KEYIN0, KEYIN1
I
Key input pin (A/D input)
78
D.POSI
I
D-BASS switch input pin (A/D input)
79
VSM
I
FM/AM signal meter voltage detection pin (A/D input)
80
KEYSEL
I
Key function setting pin
Pin No.
Pin Name
I/O
Function
– 41 –
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
•
Abbreviation
EA: Saudi Arabia
EA: Saudi Arabia
•
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.
•
Accessories and packing materials are given
in the last of the electrical parts list.
in the last of the electrical parts list.
(1) CHASSIS SECTION
SECTION 7
EXPLODED VIEWS
#4
#4
#2
11
12
2
3
1
XR-C440
11
13
#4
#4
9
10
#2
#1
#2
#2
4
5
7
MG-25C-136
F901
#3
15
8
6
14
Front panel ass’y
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
3-009-294-01 PANEL, SUB
2
3-935-003-01 SPRING, TORSION
3
3-932-205-31 DOOR, CASSETTE (XR-C450: E, EA)
3
3-932-205-51 DOOR, CASSETTE
(XR-C440/XR-C450: US, Canadian)
4
X-3367-636-1 LOCK ASSY
* 5
3-009-306-01 SHEET, INSULATING
* 6
A-3309-720-A MAIN BOARD, COMPLETE
(XR-C450: US, Canadian)
* 6
A-3309-723-A MAIN BOARD, COMPLETE (XR-C450: E)
* 6
A-3313-122-A MAIN BOARD, COMPLETE (XR-C450: EA)
* 6
A-3309-877-A MAIN BOARD, COMPLETE (XR-C440)
7
3-915-923-01 SCREW, GROUND POINT
* 8
X-3373-270-1 COVER ASSY (XR-C440)
* 8
X-3373-269-1 COVER ASSY (ISO) (XR-C450)
9
1-776-207-11 CORD (WITH CONNECTOR)
(XR-C440/XR-C450: E, EA)
9
1-776-207-31 CORD (WITH CONNECTOR)
(XR-C450: US, Canadian)
* 10
3-009-809-01 BRACKET (IC)
* 11
3-009-808-01 HEAT SINK (XR-C450)
* 11
3-009-808-21 HEAT SINK (XR-C440)
12
9-911-840-XX CUSHION (U)
* 13
3-009-813-01 CHASSIS
* 14
3-012-859-01 CAP, RUBBER
15
3-360-123-01 PLATE (C), GROUND (XR-C450: E, EA)
15
3-937-650-01 PLATE (C), GROUND
(XR-C440/XR-C450: US, Canadian)
F901
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A)
Ver 1.1
2
– 42 –
(2) FRONT PANEL SECTION
(XR-C440)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
53
51
58
57
59
56
54
55
60
LCD901
61
63
62
#5
#5
64
not supplied
(KEY board)
(KEY board)
51
3-010-396-01 KNOB (D-BASS)
53
3-010-398-01 BUTTON (RELEASE)
54
3-013-272-01 SPRING (RELEASE)
55
X-3373-678-1 PANEL SUB ASSY
56
3-010-383-01 BUTTON (SOURCE)
57
3-010-384-01 BUTTON (M. O. S) (
r. OFF. – = 0.
SEEK AMS. +
) +)
58
3-010-386-01 BUTTON (B.M.+/–) (–. SEL. +. MUTE. SENS)
59
3-010-387-01 BUTTON (PRESET) (
6. 1. 2. 3. 4. 5. 6. DSPL)
60
3-010-390-01 BUTTON (L. L. D) (PTY. AF/ TA. – DISC +)
* 61
3-010-375-11 SHEET (REFLECTOR) (XR-C440)
* 62
3-010-393-01 PLATE (LCD), LIGHT GUIDE
* 63
3-010-394-01 HOLDER (LCD)
64
3-010-382-01 PANEL, FRONT BACK
LCD901 1-801-587-11 DISPLAY PANEL, LIQUID CRYSTAL
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