Sony HCD-XG55 Service Manual ▷ View online
HCD-XG55
25
25
• Circuit Boards Location
• Waveforms
3.7 Vp-p
80 ns
1.8 Vp-p
62.5 ns
1.8 Vp-p
30.5
µ
s
1.3 Vp-p
0.5 Vp-p
0.5 Vp-p
2.5 Vp-p
7.8
µ
s
0.5 Vp-p
1.2 Vp-p
3.1 Vp-p
59 ns
1
IC101
yj
(XTAO)
2
IC101
ta
(RFAC)
(CD Play Mode)
3
IC101
ra
(TE)
(CD Play Mode)
4
IC101
el
(FE)
(CD Play Mode)
5
IC101
wh
(MDP)
(CD Play Mode)
6
IC103
qh
(RFO)
(CD Play Mode)
1
IC501
q;
(XC-IN)
2
IC501
qg
(X-IN)
1
IC601
u;
(XIN)
– BD Board –
– MAIN Board –
– PANEL FL Board –
0.2 Vp-p
CD-R (1) board
CD-R (2) board
TC (B) board
CD-L board
TC (A) board
PANEL VR board
PANEL FL board
TRANS board
SUB TRANS board
TUNER (FM/AM )
MAIN board
PA board
HEADPHONE board
FRONT INPUT board
LEAF SW board
TABLE SENSOR board
CD MOTOR board
LED board
AUDIO board
BD board
HCD-XG55
26
26
7-1.
BLOCK DIAGRAM – CD SERVO Section –
SQSO
SQCK
A/D
CONVERTER
CH1OUTF
CH1OUTR
5
4
7
2
1
5
10
6
6
7
8
16
14
13
10
11
22
4
3
51
49
48
43
24
41
40
39
64 15
28
29
30
31
32
33
24
25
23
5
6
2
3
17
18
15
16
E
B
C
D
A
CD D+5V
F
DETECTOR
A
B
C
D
RF
SUMMING
AMP
FOCUS
ERROR AMP
RF EQ
AMP
TRACKING
ERROR AMP
RFO
FE
RF AMP,
FOCUS/TRACKING ERROR AMP
IC103
TE
E
F
F I-V AMP
E I-V AMP
AUTOMATIC
POWER
CONTROL
Q101
APC LD
AMP
APC PD
AMP
LD
LD
PD
LASER DIODE
RFAC
ASYO
ASYI
ASYMMETRY
CORRECTION
CORRECTION
DIGITAL
PLL
DIGITAL SIGNAL PROCESSOR,
DIGITAL FILTER, D/A CONVERTER
IC101 (1/2)
DATA
XLAT
CLOK
14
5 6
MDP
26
7
8
XLON
3
XRST
DIGITAL
CLV
D/A
INTERFACE
SE
TE
FE
RFDC
FOCUS/TRACKING/SLED
SERVO DSP
FOCUS/TRACKING/SLED
PWM GENERATOR
SFDR
CH3FIN
CH4SIN
CH3RIN
CH3OUTF
CH3OUTR
CH2FIN
CH2RIN
CH1FIN
CH1RIN
20
MUTE
SRDR
TFDR
TRDR
FFDR
FRDR
S101
(LIMIT)
EMPH
WFCK
GFS
MIRR/DFCT/
FOK
DETECTOR
SERVO AUTO
SEQUENCER
SERVO
INTERFACE
CPU INTERFACE
18
63
62
61
19
19
SENS
20
35
57
58
37
56
19
SCOR
SQ-DATA
SQ-CLK
CD-DATA
XLT
CD-CLK
SENS
SCOR
1 2
32
33
SCLK
COUT
9 21
SSTP
27
FOK
22
23
MIRR
DFCT
TO SERVO INTERFACE
CH4OUTF
CH4OUTR
M101
(SPINDLE)
MOTOR
DRIVE
MOTOR
DRIVE
COIL
DRIVE
CH2OUTF
CH2OUTR
COIL
DRIVE
M
M
M102
(SLED)
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC102
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
DIGITAL SERVO
PROCESSOR
IC101 (2/2)
OPTICAL PICK-UP BLOCK
(KSS-213DH)
LDON
21
HOLD SW
PD
I-V AMP
12
11
13
14
54
56 53
55
FILTER
FILO
PCO
CLTV
FILI
EFM
DEMODULATOR
SERIAL
IN
INTERFACE
DIGITAL
FILTER,
NOISE SHAPER
PWM
&
INTEGRATOR
BUFFER
CLOCK
GENERATOR
TIMING
LOGIC
INTERNAL BUS
16K
RAM
ERROR
CORRECTOR
SUBCODE
PROCESSOR
HOLD
59
XRST
XTAI
X101
16.9344MHz
AIN1
AIN2
R-CH
CD-L
AOUT1
AOUT2
TO MIRR/DFCT/
FOK DETECTOR
FOK DETECTOR
PCMD
BCK
LRCK
C2PO
C2PO
66
XTAO
67
70
77
LOUT1
LOUT2
72
75
71
76
: CD PLAY (ANALOG OUT)
: CD PLAY (DIGITAL OUT)
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (1/4)
When the optical pick-up
is inner position.
is inner position.
ON :
(Page 28)
A
• SIGNAL PATH
• R-ch is omitted due to same as L-ch.
TBL-L
TBL-R
M
TABLE MOTOR DRIVER
IC201
OUT1
OUT2
IN1
IN2
M201
(TABLE)
DISC TABLE
SENSOR
IC202
ENC3/UP-SW
S201
(UP)
T-SENS
MOTOR
DRIVE
61
68
65
63
ENC2/DISC-LED 69
9
1
7
3
LED DRIVE
Q201
D201
(DISC No.)
HCD-XG55
27
27
– TUNER/TAPE DECK Section –
PB EQ AMP
(DECK A)
IC611 (2/2)
PB LEVEL (L)
(DECK A)
REC-L
PB-L
CAPSTAN MOTOR
CONTROL SWITCH
Q1001
CAPSTAN
MOTOR DRIVE
Q336, 339
1
B
(Page 28)
(Page 28)
L-CH
R-CH
HP101
(PLAYBACK)
PB EQ AMP
(DECK B)
IC601 (2/2)
L-CH
R-CH
R-CH
R-CH
R-CH
HRPE101 (1/2)
(RECORD/PLAYBACK)
ALC
REC
EQ AMP
AMS
CIRCUIT
DOLBY NR
AMP
CIRCUIT
BIAS
CONTROL
CIRCUIT
DOLBY PASS
R-CH
R-CH
L.P.F.
BUFFER
Q335
M
M1
(CAPSTAN)
HRPE101 (2/2)
(ERASE)
BIAS OSC
T621
A+7V
R-CH
3
28
36
40
35
34
39
26
77
19 15 16 18 20 22 23 24 25
17
85 84 83 82 81 80 79 78
31
33
32
32
+
48
4
2
RV311
PB LEVEL (L)
(DECK B)
RV301
TAPE SPEED
(NORMAL)
RV1002
TAPE SPEED
(HIGH)
RV1001
REC LEVEL (L)
(DECK B)
RV301
REC BIAS (R)
(DECK B)
RV441
REC BIAS (L)
(DECK B)
BIAS OSC
Q621, 622
REC BIAS
SWITCH
Q623
ROTATION
DETECT SENSOR
(DECK A)
IC1001
RV341
BIAS
TRAP
C331, L331
REC/PB SWITCHING
IC602
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (2/4)
DECK PROCESS,
DECK A/B SELECT, PB/REC EQ AMP,
DOLBY NR AMP, ALC, AMS
IC301
A IN (L)
B IN (L)
A IN (R)
B IN (R)
MAOUT
PB OUT (L)
EQ OUT
(L)
MSIN
MSOUT
BIAS ON/OFF
70
120
BIAS (N)
BIAS (C)
BIAS (M)
S1004
A 120/70
B NORM/CROM
ALC ON/OFF
PB A/B
NORM/HIGH
NR ON/OFF
RM ON/OFF
REC/PB/PASS
LM ON/OFF
(DECK A 120/70)
88
S1003
(DECK A HALF)
S1001
(DECK A PLAY)
S1002
(DECK B PLAY)
S1008
(DECK B 120/70)
27
REC OUT (L)
R OUT (L)
R IN (L)
ALC (L)
EQ IN (L)
ALC
IN (L)
44
38
100
AMS-IN
91
A-SHUT
ROTATION
DETECT SENSOR
(DECK B)
IC1002
90
B-SHUT
TRIGGER
PLUNGER DRIVE
(DECK A)
Q333, 334
73
A-TRG
TC-MUTE
R/PB/PAS
NR-ON/OFF
REC-MUTE
BIAS
EQ-H/N
PB-A/B
ALC
TC-RELAY
A-PLAY-SW
B-PLAY-SW
A-HALF
89
S1006
(DECK B HALF)
S1009
(DECK B REC)
S1005
(DECK A REC)
B-HALF
TRIGGER PLUNGER
DECK A
TRIGGER
PLUNGER DRIVE
(DECK B)
Q331, 332
72
B-TRG
76
74
CAP-M-H/L
CAPM-CNT2
TRIGGER PLUNGER
DECK B
87
86
C
• SIGNAL PATH
: PLAYBACK (DECK A)
: PLAYBACK (DECK B)
: RECORD
: TUNER (FM/AM)
D+5V
(UNSW)
R-CH
FM/AM TUNER UNIT
ANTENNA
ST-L
FM ANT
FM ANT
AM ANT
AM ANT
ST-R
ST-MUTE
STEREO
TUNED
ST-DIN
ST-DOUT
ST-CLK
ST-CE
FM
75
Ω
AM
49 50 51
54 53 55 52
ST-CE
ST-CLK
ST-DOUT
ST-DIN
TUNED
STEREO
ST-MUTE
ST-CE
ST-CLK
ST-DOUT
ST-DIN
TUNED
STEREO
ST-MUTE
(Page 28)
D
CT-L
• R-ch is omitted due to same as L-ch.
46
51
53
43
ST-MUTE
STEREO
TUNED
TUNED
ST-DIN
ST-DOUT
ST-CLK
ST-CE
ST-CE
PB EQ AMP
(DECK A)
IC611 (1/2)
PB EQ AMP
(DECK B)
IC601 (1/2)
HCD-XG55
28
28
– MAIN Section –
DBFB CONTROL
SWITCH
Q111
BASS WOOFER
CONTROL SWITCH
Q115
PROTECT
SWITCH
Q804
RESET
SWITCH
Q801
PHONO
EQ AMP
IC601
POWER AMP
IC801
CD-L
J701 (1/2)
A
(Page 26)
(Page 27)
C
(Page 27)
(Page 29)
PB-L
B
SPEANA
F
R-CH
FUNCTION SELECT
SWITCH
IC181
R-CH
VOLUME
CONTROL
CPU
INTERFACE
BASS BOOST
CONTROL
CIRCUIT
INPUT
SELECT
SWITCH
SOUND
CONTROL
CIRCUIT
GRAPHIC
EQUALIZER
CONTROL
CIRCUIT
R-CH
FEED BACK
SWITCH
Q112
R-CH
COMMAND
F OUT2
BUF
OUT2
VOL
IN2
IN2
+
+
R-CH
R-CH
R-CH
R-CH
EVER +5V
D803
R-CH
+
+
MUTING
Q113
OVER LOAD
DETECT
Q801, 851
TEMPERATURE
DETECT SWITCH
Q831, 832
DC DETECT
SWITCH
Q433, 434
INPUT SELECT SWITCH,
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
IC101
IN D2
IN C2
IN E2
IN A2
IN F2
IN A2
IN F2
KEY IN2
KEY IN1
KEY OUT 2
KEY OUT 1
L+R
DATA
CLOCK
LATCH
493-DATA
493-CLK
493-LAT
SW-MODE
BB B2,
BB A2
SUPER
WOOFER
REC A2
REC-L
REC B2
R-CH
R-CH
X0
X
A
B
X1
TH831
R-CH
R-CH
+
R-CH
M901
(FAN)
(FAN)
R-CH
–1
–2
FAN MOTOR
DRIVE
Q961, 962
R-CH
R-CH
OVER LOAD
DETECT SWITCH
Q432
PROTECT SWITCH
Q439
OVER LOAD
DETECT SWITCH
Q437
FRONT SPEAKER PROTECT
RELAY DRIVE
Q401, 402
STANDBY SWITCH
Q803, 804, 834
MUTING CONTROL
SWITCH
Q802, 803
MUTING CONTROL
SWITCH
Q833
HEADPHONE
MUTING
Q805, 855
TM401
L
L
R
R
PHONO
IN
L
R
VIDEO
AUDIO IN
GAME
INPUT
AUDIO
MD IN
J701 (2/2)
L
R
MD OUT
38, 39
D501
D534
D807
D401
RY401
J803
PHONES
+
–
–
+
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (3/4)
+
27
F-RELAY
3
7
34
STK-POWER
1
HP MUTE 93
LINE-MUTE
RESET
6
12
AC-CUT 22
HP-IN 36
47
48
38
60 5
59
6
58
57
42
41
72
36
34
BUF IN2
37
32
33
66
67
65
69
64
IN B2
68
M
L
R
30
+
XC-OUT
X502
16MHz
X501
32.768kHz
XC-IN
X-OUT
X-IN
FUNC SEL0
FUNC SEL1
FUNC SEL1
V MUTE
11
10
13
46
14
13
10 9
12
15
J804 (2/2)
L
R
45
28
PROTECT
DBFB-H/L
ST-L
D
(Page 27)
1
6
IN1
IN3
10
VOUT
5
3
2
CTLA
CTLB
CTLC
LOGIC
J804 (1/2)
J702 (1/2)
J702 (2/2)
C
B
A
C
B
A
VIDEO SELECT
SWITCH,
VIDEO AMP
IC191
GAME
INPUT
VIDEO
VIDEO
VIDEO
AUDIO IN
VIDEO OUT
• SIGNAL PATH
: TUNER (FM/AM)
: CD PLAY
• R-ch is omitted due to same as L-ch.
: TAPE PLAY
: RECORD
G
(Page 29)
RESET
RESET SIGNAL
GENERATOR
IC801
PROTECT SWITCH
Q431
FRONT SPEAKER
IMPEDANCE
USE 4 – 16
Ω
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