Sony XR-C5500 / XR-C5604X Service Manual ▷ View online
29
Serial clock input
UNI-LINK serial interface clock input terminal
Serial data output
UNI-LINK serial interface data output terminal
Serial data input
UNI-LINK serial interface data input terminal
Serial clock output
UNI-LINK serial interface clock output terminal
I
2
C bus serial data input/output
Serial interface with electronic volume IC, TUX-020
Electronic volume mute control output terminal
Mute terminal for electronic volume
I
2
C bus serial clock output
Serial interface with electronic volume IC, TUX-020
Power amplifier STANDBY control output
Performs standby on/off control of the power amplifier and power IC
Power amplifier mute control output terminal
Mute terminal during AMPON output ON/OFF
System MUTE control output
Mute control output of audio signal line output stage
Set the electronic volume also to -
∞ during active
Outputs “H” when mute is ON
Immediately sets into the input state during BU-INOFF
Tuner mute control output terminal
Controls FM and AM outputs from TUX
52
AMSON
O
Outputs “L” during AMS
FOR/REV control output
Controls tape running direction
Outputs “H” in the forward direction and “L” in the reverse direction
Metal control input/output
Switches between metal on/off MTL is present when initial “L” is input
Outputs “H” during MTL ON
Tape mute control output
FF and REW are active during ATA operations
Outputs “H” during mute on when the EQ IC is connected
Dolby control input/output
Sets the presence/absence of the Dolby function during the input mode during initialization
Switches DOLBY to on or off in the output mode normally
DOLBY is on when “L” is input Outputs “H” during DOLBY ON
Sound presence/absence detection input during AMS
Detects if tape audio sound is present or absent
Sound is present when “L” is input and absent when “H” is input
4VPREOUT model acknowledge terminal
Acknowledges as 4VPREOUT model when “L”, and changes the gain amount of the
electrical control IC
59 to 69
O
Not used
Pin No.
Pin Name
I/O
Function
46
VOLATT
O
47
I2_CKO
O
48
AMPON
O
43
UNISI
I
44
UNICKO
O
45
I2C_SIO
I/O
41
UNICLI
I
42
UNISO
O
49
AMPATT
O
50
ATT
O
56
DOLON
I/O
57
AMSIN
I
55
TAPATT
O
51
TU_ATT
O
53
NROUT
O
54
MTLON
I/O
58
4VPRE
I
30
70 to 73
NCO
O
Not used
EEPROM communication terminal
EEPROM data input/output terminal
EEPROM communication terminal
EEPROM clock output terminal
76
NCO
O
Not used
AM filter control terminal
Outputs “L”during 2.94 to 5.585, 14.125 to 18.135 MHz during SW reception, and
outputs “H” at other times
Front panel open/close detection input
Panel is closed when “L”
DOOR indicator output terminal
“H” is output when DOORSW is “H”
“L” is output when NOSESW is “H”
80
REIN1
I
81
REIN0
I
AD conversion power supply control output
When the KEYACK terminal for controlling the AVREF power supply to input key AD
conversion inputs is active, “L” is output from this terminal to set the input possible state
Illumination power supply control output
Output control terminal of the power supply for illumination of functions keys, etc.
Depends on pressing the OFF key for two seconds to turn it off
OFF key normally off, etc
Accessory power supply detection output input (ACCIN)
Pressing the OFF key for two seconds to turn it off, etc
System power supply control output (PW ON)
When on output= “H” output
When off output= “L” output
Reel table rotation detection input
Used for detecting tape end using the terminal for detecting tape rotation
85
POS3
I
86
POS2
I
Position signal detection input
87
POS0
I
Terminal for detecting tape position Connected to MD
88
POS1
I
Loading motor control output (Loading direction)
Rotates the loading motor in the normal direction using the tape control terminal
Loading motor control output (Ejection direction)
Rotates the loading motor in the reverse direction using the tape control terminal
Becomes active together with LM and LOD, and brakes the loading motor
TAPE power supply control output
Capstan motor control output
Loading motor control output (Loading direction)
Loading motor control output (Ejection direction)
Outputs on when one of the above three ports is active
At other times, does not depend on off output and power output
TAPE capstan motor control signal output terminal
Normally, linked with TAPON Outputs LOW when paused at TAPE BEHIND to stop the
motor
91
TAPON
O
Pin No.
Pin Name
I/O
Function
83
ILLON
O
84
REL
I
89
LMLOD
O
78
DOORSW
I
79
DOORIND
O
82
AD_ON
O
75
E2P_CKO
O
77
SWSHIFT
O
90
LMEJ
O
92
CM ON
O
74
E2P_SIO
I/O
Rotary encoder input terminal
active ...... on output
Inactive ...... off output
active ...... on output
Inactive ...... off output
31
93
NCO
O
94
O
95
DAVSS
O
96
NS_MASK
O
Not used
97
O
98
O
100
DAVDD
O
Pin No.
Pin Name
I/O
Function
32
(1)
CHASSIS SECTION
SECTION 8
EXPLODED VIEWS
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
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.
electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
* 1
A-3326-141-A MAIN BOARD, COMPLETE (C5604X)
* 1
A-3326-181-A MAIN BOARD, COMPLETE (C5500)
* 2
3-040-994-01 CHASSIS
* 3
3-045-878-01 PLATE (TU), GROUND
4
X-3377-621-2 LOCK ASSY
5
3-040-990-01 BUTTON (EJECT)
* 6
1-676-603-12 SUB BOARD
7
3-027-437-12 DOOR, CASSETTE
8
3-935-003-01 SPRING, TORSION
* 9
3-045-877-01 CUSHION (TU)
10
X-3376-699-2 GEAR ASSY
11
3-030-909-02 DAMPER, OIL
12
3-713-786-51 SCREW +P 2X3
* 13
3-045-828-01 INSULATED PLATE
* 14
3-040-996-11 HEAT SINK (2P)
15
3-012-859-01 CAP (25), RUBBER
16
3-915-923-01 SCREW, GROUND POINT
17
1-792-194-21 CORD (WITH CONNECTOR)(POWER)
* 18
3-046-991-01 SPACER (COVER R)
* 19
3-046-990-01 SPACER (COVER L)
* 20
3-040-995-01 COVER
* 21
3-040-998-01 BLACKET (IC)
* 22
3-041-262-01 HEAT SINK (REG/XR)
23
1-792-195-11 CABLE, FLEXIBLE FLAT
24
X-3378-397-1 PANEL ASSY, SUB
F781
1-532-877-11 FUSE (BLADE TYPE)(AUTO FUSE)(10A)
2
F781
#1
#3
#3
#3
#10
#3
#3
#3
#4
#9
#5
#1
#2
#2
#2
#2
Front panel section
3
4
24
23
5
6
7
8
9
10
13
11
12
not supplied
MG-25F-136
14
15
16
16
17
18
19
21
22
1
20
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