Sony EXR-C205 / XR-C340 Service Manual ▷ View online
– 17 –
Pin No.
Pin Name
I/O
Function
44
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
45
AMSIN
I
Tape mucic 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
49
TAPMUT
O
Tape muting control pin
At muting: “H”
50
ILLON
O
Illumination power supply control pin
At PW SEL on: ACC on: “H”
At PW SEL off: ACC on: “H”
At PW SEL on: ACC on: “H”
At PW SEL off: ACC on: “H”
51
SD_IN
I
Station detection signal input pin
52
NOSESW
I
Front panel removal or attaching detection pin
53
TELMUT
I
Telephone muting detection pin
“L”: 20dB audio muting
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 (Fixed at “H” in this set)
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
COLORSEL
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)
69
UNISO
O
Data output pin (for SONY BUS)
70
UNISI
I
Data input pin (for SONY BUS)
71
UNICKO
O
Clock output pin (for SONY BUS)
72
BUSON
O
BUS ON control signal output pin (for SONY BUS)
73
SYSRST
O
System reset signal output pin
74
VREG
O
CPU regurator output pin
75
GND
–
GND
76
X_OUT
O
System clock output pin (4.5MHz)
77
X_IN
I
System clock input pin (4.5MHz)
78
CE
I
Fixed at “L”
79
VDD1
–
Power supply
80
RESET
I
Reset input pin
– 18 –
• IC Block Diagrams
(MAIN BOARD)
IC331
LC75373ED
IC301
CXA2509AQ-T4
+
–
–
+
–
+
–
+
–
+ –
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
21
22
23
26
27
28
29
30
31
32
33
34
37
38
39
40
24
25
PBFB1
PBRIN1
PBREF1
PBFIN1
35
36
PBGND
VCT
PBFIN2
PBREF2
PBRIN2
PBFB2
PBEQ1
PBOUT1
VCC
TAPEIN1
AUXIN1
MSLPF
LINEOUT1
NC
NC
G2FB
G1FB
MSTC
DGND
MSOUT
NC
NC
INSW
TAPESW
MSMODE
DRSW
MSSW
NC
NC
LINEOUT2
DIREF
AUXIN2
TAPEIN2
PBEQ2
PBOUT2
GND
F2
120
µ
/70
µ
X1
X1
VCT
+
F1
120
µ
/70
µ
24dB
F3
LPF
VCC
DETECT
MS ON/
OFF
FWD/RVS
TAPE EQ
TAPE/AUX
NR BIAS
24dB
MS
MODE
T2
T1
+
–
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
–
+
–
–
+
–
–
+
–
+
–
DECODER
LATCH
SHIFT
REGISTER
CONTROL
–
+
+
–
–
1
2
3 4
5
6 7 8
9 10
20
19
18
17
16
15
14
13
12
11
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
LSELO
L4
L3
L3
L2
L1
VDD
R1
R2
R3
R4
R4
RSELO
RVRIN
RCOM
RT1
RT2
RT3
RTOUT
RSIN
RS1
RS2
RS3
RSOUT
RFIN
RFOUT
RROUT
VSS
CL
DI
CE
VREF
LROUT
LFOUT
LFIN
LSOUT
LS3
LS2
LS1
LSIN
LTOUT
LT3
LT2
LT1
LCOM
LVRIN
– 19 –
IC351
MM1322XFBE
• Waveform
IC611
BA3918-V2
IC581
BA8270F-E2
1
IC501
&¶
1
2
3
4
5
6
7
8 OUT2
VS
OUT1
GND
IN1
VCC
IN2
GND
CONTROL CIRCUIT
1
2
3
4
5
5
6
7
8
9
10
14
13
12
11
BUS ON
SWITCH
RESET
SWITCH
BATTERY
SWITCH
BUS ON
RST
BATT
CLK
VREF
DATA
GND
VCC
RST
BUS ON
BUS ON
CLK IN
BU IN
DATA IN
DATA OUT
+
–
+
–
+
–
+
–
OVER VOLTAGE
PROTECT
REGULATOR
1
2 3 4
5
6
7
8
9
10
12
11
NC
MODE2
MODE1
STB
VDD
AMP
VCC
ANT
COM
AM
FM
GND
3.2 Vp-p
222 ns
– 31 –
SECTION 7
EXPLODED VIEWS
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.
1
Front panel ass’y
#2
#2
#1
4
3
5
6
7
8
15
9
10
12
11
14
13
#2
#4
#4
#2
#4
#3
MG-25A-136
F781
(1) CHASSIS SECTION
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
3-932-205-61 DOOR, CASSETTE
4
X-3367-636-1 LOCK ASSY
* 5
3-010-377-01 INSULATOR
* 6
A-3309-731-A MAIN BOARD, COMPLETE (EXR-C205)
* 6
A-3309-797-A MAIN BOARD, COMPLETE (XR-C340)
7
3-915-923-01 SCREW, GROUND POINT
* 8
X-3373-270-1 COVER ASSY
9
1-776-207-11 CORD (WITH CONNECTOR) (POWER)
(XR-C340)
9
1-776-207-31 CORD (WITH CONNECTOR) (POWER)
(EXR-C205)
* 10
3-009-809-01 BRACKET (IC)
* 11
3-009-808-11 HEAT SINK
12
9-911-840-XX CUSHION (U)
* 13
3-009-813-01 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)
2
Click on the first or last page to see other EXR-C205 / XR-C340 service manuals if exist.