Sony XR-M500R / XR-M550 Service Manual ▷ View online
42
42
• IC Block Diagrams
– MAIN Board –
– MAIN Board –
IC100
TDA7402TR
IC102
BA3834F
IC200, 201
NJM2160AM-TE2 (XR-M550)
34
35
36
37
38
39
40
41
42
43
44
33 32 31
30
29
28
27
26
25
24 23
22
21
20
19
18
16
15
14
13
12
1 2
3 4 5 6
7 8 9 10
11
INPUT
MULTIPLEXER
MAIN SOURCE
SELECTOR
MIXING
SELECTOR
SECOND SOURCE
SELECTOR
MAIN
PHONO
MAIN
CH0
AUX
AM
FM
IN-GAIN
+AUTO ZERO
+
LOUDNESS
SOFTMUTE
VOLUME
TREBLE
BASS
HP
LP
COMPANDER
VOICE
BANDPASS
MUTE
IN-GAIN
LOUDNESS
DIGITAL CONTROL
IIC-BUS
HIGH-CUT
S&H
25kHz
LP
DEMODULATOR
+STEREO ADJUST
+STEREO BLAND
MULTIPATH
DETECTOR
D/A
CONVERTER
PILOT
CANCELATION
PIL DET
PLL
AM/FM
NOISE BLANKER
BEEP
80kHz
LP
17
PULSE
FORMER
QUAL
SUPPLY
SECOND
MAIN
ACIN
MONO-
FADER
MONO-
FADER
MONO-
FADER
MONO-
FADER
MONO-
FADER
MONO-
FADER
SUBWOOFER
+PHASE
CONTROL
MIXER
OUTPUT
SELECTOR
FRONT
REAR
SW
VDD
SCL
SDA
GND
SM
QUAL
MPOUT
MPIN
LEVEL
MPX
AMIF
SEL
SER
FD1L+
FD1L–
FD1R+
FD1R–
FD2L+
FD2L–
FD2R+
FD2R–
AM
ACINLF
SWINR
SWINL
ACOUTR
ACOUTL
CREF
MUX
MD1
MD1G
MD2
MD2G
ACINLR
ACINRF
ACINRR
OUTLF
OUTLR
OUTRF
OUTRR
OUTSWL
OUTSWR
OUTSSL
OUTSSR
PEAK
HOLD
REGISTER
68Hz
B.P.F.
GND
BIASC
VREFC
RREF
N.C.
DIFOUT
N.C.
CIN
AIN
VCC
AOUT
TEST
N.C.
SEL
N.C.
C
B
A
9
4
3
2
1
6
15
11
13
16
14
10
12
PEAK
HOLD
REGISTER
170Hz
B.P.F.
PEAK
HOLD
REGISTER
420Hz
B.P.F.
PEAK
HOLD
REGISTER
1kHz
B.P.F.
DIFFERENTIAL
AMPLIFIER
PEAK
HOLD
REGISTER
MULTIPLEXER
DECODER
2.4kHz
B.P.F.
PEAK
HOLD
REGISTER
5.9kHz
B.P.F.
PEAK
HOLD
REGISTER
14.4kHz
B.P.F.
17
18
5
8
7
REFERENCE
REFERENCE
VCCL
VCCL
VCCL
INL
SVRL
INML
INMR
SVRR
INR
VCCR
VCCR
VCCR
BUFFER
BUFFER
BUFFER
BUFFER
LIFT
AMP
SIGNAL
AMP
LIFT
AMP
SIGNAL
AMP
CL+
CL–
LGND
OUTL
OUTR
RGND
CR–
CR+
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1
2
2
3
4
5
6
7
8
9
10
VCC
IN2
S-GND
IN1
NC
NC
OUT2
NC
P-GND
OUT1
CONTROL
CIRCUIT
MOTOR
DRIVE
CIRCUIT
BUFFER
BUFFER
IC400
LB1930M-TLM
43
IC401
CXA2510AQ-T4
IC502
BA6288FS-E2
IC700
SAA6588T/V2-118 (XR-M500R)
IC501
BA8270FV-E2
+
–
–
+
–
+
–
+
–
+ –
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
PBFB2
PBRIN2
PBREF2
PBFIN2
35
36
PBGND
VCT
PBFIN1
PBREF1
PBRIN1
PBFB1
PBEQ2
PBOUT2
VCC
TAPEIN2
AUXIN2
MSLPF
LINEOUT2
TCH2
NC
PLAY
FF
MSTC
DGND
MSOUT
NC
NRSW
INSW
TAPESW
MSMODE
DRSW
MSSW
NC
TCH1
LINEOUT1
DIREF
AUXIN1
TAPEIN1
PBEQ1
PBOUT1
GND
F2
120
µ
/
70
µ
X1
X1
VCT
+
F1
120
µ
/
70
µ
NR
OFF/B
F3
LPF
VCC
DETECT
MS ON/
OFF
NR
MODE
FWD/RVS
TAPE EQ
TAPE/AUX
NR BIAS
NR
MS
MODE
OFF/B
T2
T1
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
DRIVER
DRIVER
VM
4
VCC
5
FIN
6
RIN
11
NC
10
NC
9
NC
7
NC
8
VREF
12
NC
13
OUT2
14
NC
15
RNF
16
OUT1
3
NC
2
GND
1
CONTROL
LOGIC
TSD
POWER
SAVE
SCOUT
MRO
MPTH
TCON
OSCO
OSCI
VSSD
VDDD
DAVN
SDA
VREF
MPX
VSSA
VDDA
AFIN
MAD
PSWN
SCL
2
1
6
15
11
13
16
14
12
INTERFACE
REGISTER
SIGNAL QUALITY
DECODER
CLOCKED
COMPARATOR
POWER SUPPLY
& RESET
TEST
CONTROL
OSCILLATOR
& CLOCK
PAUSE
DETECTOR
MULTI
PATH
DETECTOR
57kHz
8th ORDER
BAND-PASS FILTER
RDS/RDBS
DECODER
RDS/RDBS
DEMODULATOR
IIC BUS SLAVE
TRANSCEIVER
17
18
CIN
19
LVIN
20
8
7
DATA
CLOCK
DATA
CLOCK
4
4
5
9
10
3
4
5
44
7-16.
IC PIN FUNCTION DESCRIPTION
•
Pin No.
Pin Name
I/O
Description
1
NC
O
Not used (open)
2
AMSIN
I
Whether a music is present or not from CXA2510AQ (IC401) is detected at auto music sensor
“L”: music is present, “H”: music is not present
“L”: music is present, “H”: music is not present
3
AMSON
O
Tape auto music sensor control signal output to the CXA2510AQ (IC401)
“L” is output to lower the gain for audio level at FF/REW mode
“L” is output to lower the gain for audio level at FF/REW mode
4
SPE LAT
O
Serial data latch pulse output for spectrum analyzer section to the liquid crystal display drive
controller (IC607)
controller (IC607)
5
MUTE
O
Audio line muting on/off control signal output terminal “H”: muting on
6
SYSRST
O
System reset signal output to the liquid crystal display drive controller (IC607) and SONY bus
interface (IC501) “L”: reset
interface (IC501) “L”: reset
7
N-ROUT
O
Forward/reverse direction control signal output to the CXA2510AQ (IC401)
“L”: forward direction, “H”: reverse direction
“L”: forward direction, “H”: reverse direction
8
VCC
—
Power supply terminal (+5V)
9
NC
I
Not used (fixed at “L”)
10
E2P-SIO
I/O
Two-way data bus for tuner EEPROM with the FM/AM tuner unit (TUX100)
11
E2P-CKO
I/O
Two-way bus clock signal for tuner EEPROM with the FM/AM tuner unit (TUX100)
12
RX
I
Flash memory write data input from the liquid crystal display drive controller (IC607)
13
TX
O
Flash memory write data output to the liquid crystal display drive controller (IC607)
14
BUS-ON
O
Bus on/off control signal output to the liquid crystal display drive controller (IC607) and SONY
bus interface (IC501) “L”: bus on
bus interface (IC501) “L”: bus on
15
BEEP
O
Beep sound drive signal output terminal
16
TEL-MUTE
I
Telephone detection signal input terminal At input of “H”, the signal is attenuated by –20 dB
17
UNISI
I
Serial data input from the SONY bus interface (IC501)
18
UNISO
O
Serial data output to the SONY bus interface (IC501)
19
UNICKO
O
Serial clock signal output to the liquid crystal display drive controller (IC607) and SONY bus
interface (IC501)
interface (IC501)
20 to 22
NC
O
Not used (open)
23
MTLOUT
O
METAL on/off control signal output to the CXA2510AQ (IC401) “H”: METAL on
24
SIRCS
I
Sircs remote control signal input from the remote control receiver (IC900, 903)
25 to 30
NC
O
Not used (open)
31
VOLATT
O
Pre amplifier muting on/off control signal output to the electrical volume (IC100)
“L”: muting on
“L”: muting on
32
TUATT
O
Muting on/off control signal output of the FM/AM tuner signal “L”: muting on
33
VSS
—
Ground terminal
34
C
—
Connected to coupling capacitor for the power supply
35, 36
NC
O
Not used (open)
37
ANT CUT
O
Tuner system power supply on/off control signal output terminal “H”: tuner power on
Not used (open)
Not used (open)
38
DVCC
—
Power supply terminal (+5V) (for D/A converter)
39
DVSS
—
Ground terminal (for D/A converter)
40
FP CTRL
O
Front panel open/close motor (M601) speed control signal output to the BA6288FS (IC502)
41
NC
O
Not used (open)
42
AVCC
—
Power supply terminal (+5V) (for analog system)
43
AVRH
I
Reference voltage (+5V) input terminal (for A/D converter)
44
AVRL
I
Reference voltage (0V) input terminal (for A/D converter)
45
AVSS
—
Ground terminal (for analog system)
MAIN BOARD IC601 (SYSTEM CONTROLLER)
MB90574BPMT-G-257-BND (XR-M500R) MB90574BPMT-G-262-BND (XR-M550)
MB90574BPMT-G-257-BND (XR-M500R) MB90574BPMT-G-262-BND (XR-M550)
45
Pin No.
Pin Name
I/O
Description
46
KEYIN0
I
Key input terminal (A/D input) (LSW901 to LSW912, S900)
TA, SOUND, D-BASS, MENU, DISC +, . m, LIST, > M, ENTER, DISC –, CLOSE,
OPEN, Z keys input
(LSW901 TA, LSW903 D-BASS: XR-M500R only)
TA, SOUND, D-BASS, MENU, DISC +, . m, LIST, > M, ENTER, DISC –, CLOSE,
OPEN, Z keys input
(LSW901 TA, LSW903 D-BASS: XR-M500R only)
47
KEYIN1
I
Key input terminal (A/D input) (LSW913 to LSW919, LSW921 to LSW925, S902)
6 to 3, SHUF 2, REP 1, AF, +, PTY DSPL (XR-M500R), DSPL (XR-M550), –, OFF, SOURCE,
MODE o keys input
(LSW919 AF: XR-M500R only)
6 to 3, SHUF 2, REP 1, AF, +, PTY DSPL (XR-M500R), DSPL (XR-M550), –, OFF, SOURCE,
MODE o keys input
(LSW919 AF: XR-M500R only)
48
RCIN0
I
Rotary remote commander key input terminal (A/D input)
49
NC
O
Not used (open)
50
QUALITY
I
Noise level detection signal input at SEEK mode (A/D input)
Used for the XR-M500R only (XR-M550: Not used open)
Used for the XR-M500R only (XR-M550: Not used open)
51
FMAGC
I
FM AGC detection signal input from the FM/AM tuner unit (TUX100) (A/D input)
52
MPTH
I
Multi-path detection signal input from the RDS decoder (IC700) (A/D input)
Used for the XR-M500R only (XR-M550: Not used open)
Used for the XR-M500R only (XR-M550: Not used open)
53
VSM
I
FM and AM signal meter voltage detection input from the FM/AM tuner unit (TUX100)
(A/D input)
(A/D input)
54
VCC
—
Power supply terminal (+5V)
55
ST-BY
O
Standby on/off control signal output terminal “L”: standby mode, “H”: amplifier on
56
NS-MASK
O
Discharge control signal output for the noise detection circuit “H”: discharge
Used for the XR-M500R only (XR-M550: Not used open)
Used for the XR-M500R only (XR-M550: Not used open)
57
REEL
I
Rotation detect signal input from supply reel sensor and take-up reel sensor on the deck
mechanism
mechanism
58
NC
I
Not used (fixed at “L”)
59
TAPE ON
O
Tape system power supply on/off control signal output terminal “H”: tape on
60
LM-EJ
O
Motor drive signal output to the loading/tape operation motor drive (IC400) “H” active
(For the eject direction and reverse side operation) *1
(For the eject direction and reverse side operation) *1
61
LM-LOD
O
Motor drive signal output to the loading/tape operation motor drive (IC400) “H” active
(For the loading direction and forward side operation) *1
(For the loading direction and forward side operation) *1
62
CM ON
O
Capstan/reel motor (M901) drive signal output terminal “H”: motor on
63
VSS
—
Ground terminal
64
POS0
I
65
POS1
I
66
POS2
I
67
POS3
I
68
NC
O
Not used (open)
69
FLASH-W
I
Internal flash memory data write mode detection signal input terminal “L”: data write mode
Not used (pull up)
Not used (pull up)
70
IIC SDA
I/O
Two-way data I
2
C bus with the FM/AM tuner unit (TUX100), RDS decoder (IC700) and
electrical volume (IC100) (RDS decoder is XR-M500R only)
71
IIC SCL
O
I
2
C bus clock signal output to the FM/AM tuner unit (TUX100), RDS decoder (IC700) and
electrical volume (IC100) (RDS decoder is XR-M500R only)
72
RCIN1
I
Rotary remote commander shift key input terminal
73
X1A
O
Sub system clock output terminal (32.768 kHz)
74
X0A
I
Sub system clock input terminal (32.768 kHz)
75
DAVN
I
Data transmit completed detection signal input from the RDS decoder (IC700) “H” active
Used for the XR-M500R only (XR-M550: Not used open)
Used for the XR-M500R only (XR-M550: Not used open)
76
CDON-IN
I
CD/MD on/off control signal input terminal (fixed at “L” in this set)
77
BU-IN
I
Battery detection signal input from the SONY bus interface (IC501) and battery detect circuit
“L” is input at low voltage
“L” is input at low voltage
Tape position (EJECT/FF/REW/REV/
FWD mode) detect input from the tape
operation switch on the deck mechanism
FWD mode) detect input from the tape
operation switch on the deck mechanism
POS0: “L”: EJECT mode, “H”: others mode
POS1: “L”: FF and FWD mode, “H”: others mode
POS2: “L”: REW mode, “H”: others mode
POS3: “L”: REV and EJECT mode, “H”: others mode
POS1: “L”: FF and FWD mode, “H”: others mode
POS2: “L”: REW mode, “H”: others mode
POS3: “L”: REV and EJECT mode, “H”: others mode
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