Sony CMT-BX30R / CMT-BX40R / HCD-BX30R / HCD-BX40R Service Manual ▷ View online
HCD-BX30R/BX40R
HCD-BX30R/BX40R
17
17
SECTION 5
ELECTRICAL CHECKS
FM TUNE LEVEL CHECK
Procedure:
1. Turn on the set.
2. Input the following signal from signal generator to FM antenna
1. Turn on the set.
2. Input the following signal from signal generator to FM antenna
input directly.
Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation
Deviation
: 75 kHz
Modulation
: 1 kHz
ANT input
: 35 dBu (EMF)
Note: Use 75 ohm coaxial cable to connect signal generator and the set.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.
4. Confi rm “TUNED” is lit on the display for A, B and C sig-
4. Confi rm “TUNED” is lit on the display for A, B and C sig-
nals.
When the selected station signal is received in good condition,
“TUNED” is displayed.
“TUNED” is displayed.
Note:
1. CD Block is basically constructed to operate without adjustment.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10 M
1. CD Block is basically constructed to operate without adjustment.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10 M
Ω impedance.
4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specifi ed value with the following checks.
5. Check the focus bias check when optical pick-up block is replaced.
FOCUS BIAS CHECK
Procedure:
1. Connect oscilloscope to TP121 (RFI) and TP124 (VC) on the
1. Connect oscilloscope to TP121 (RFI) and TP124 (VC) on the
CD board.
2. Press the [
?
/
1
] button to turn the power on.
3. Set disc (YEDS-18) on the disc tray and press the [CD
u
]
button to playback.
4. Confi rm that oscilloscope waveform is as shown in the fi gure
below. (eye pattern)
A good eye pattern means that the diamond shape (
◊) in the
center of the waveform can be clearly distinguished.
Checking Location:
TUNER SECTION
CD SECTION
signal
generator
set
+
–
–
CD board
TP121 (RFI)
TP124 (VC)
oscilloscope
(DC range)
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level:
1.2 ± 0.3 Vp-p
TP124
(VC)
– CD Board (Conductor Side) –
TP121
(RFI)
IC101
HCD-BX30R/BX40R
HCD-BX30R/BX40R
18
18
SYSTEM CONTROLLER
IC301 (1/3)
CD-MP3 PROCESSOR
IC101
MUTE
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
95
89
A
AVDD
+3.3V
+3.3V
DETECTOR
FNi1 (A)
RFo
97 FPi1 (B)
88
2
AGCi
3
RFRP
RFZi
7
6
TEi
TEZi
83
RFEQo
81 RFi
82 RFRPi
82 RFRPi
30
LO
27
RO
65
AIN (PI4)
66
BCKi (PI5)
BCK
A-IN
BUS1
BUS0
BUS2
BUS3
BUCK
67
LRCKi (PI6)
LRCK
51
PIO3
GATE
49
PIO1
ST-REQ
38
BUS0
R-CH
94 FNi2 (C)
96 FPi2 (D)
100 TNi (E)
98 TPi (F)
91 LDo
92
MDi
2 VO1+
1 VO1–
13 DMO
AUTOMATIC
POWER CONTROL
Q301
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSM-213DCP)
B
C
D
E
F
12 FMO
10 TRo
9 FOo
20 IO0 (/HSO)
I-V AMP
M401
(SPINDLE)
M402
(SLED)
12 VO2–
11 VO2+
18 VO3+
17 VO3–
26 VO4+
27
7
IN4’ 24
IN3’ 20
IN2’ 9
IN1 3
BIAS 23
84 VRo
VO4–
M
M
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE MOTOR DRIVE
IC401
S201
(LIMIT)
DVDD
+3.3V
24
XO
23
XI
X102
16.9344MHz
60 CD DRIVER MUTE
LOADING
MOTOR DRIVE
IC311
CDM LOAD IN 85
CDM LOAD OUT
CDM SW (OPEN)
CDM SW (CLOSE)
84
88
87
M
A
CD-L
B
DATA, CLOCK,
A-IN, BCK, LRCK,
GATE, ST-REQ
C
BUS0 – BUS3,
BUCK, CCE, REQ
: CD PLAY
SIGNAL PATH
R-ch is omitted due to same as L-ch.
: USB
VCC
A
B
C
D
E
F
LD
PD
SP+
VC
SP–
SL+
SL–
T+
T–
F+
F–
1
2
3 CD BUS0
13
39
BUS1
4
3
2 CD BUS1
5
40
BUS2 (SO)
8
9
1 CD BUS2
70 CD CLK
6
41
BUS3 (SI)
11
10
100 CD BUS3
12
BUS SWITCH
IC321
1
2
13
4
3
5
5
8
9
6
6
11
10
12
12
BUS SWITCH
IC322
DATA SELECTOR
IC323
A/B
Q321
42
BUCK (CLK)
4
2
3
CCE
69 CD CCE
43
XCCE
54
SBSY
48
PIO0
7
68 MP3 IREQ
67 DEC BUS SEL
19 SBSY
37
XRST
59 CD RESET
5
REQ
6
12
14
13
9
10
11
1
S001
DISC TRAY
OPEN/CLOSE DETECT
OPEN
CLOSE
M001
(LOADING)
47
AOUT2 (PO5)
63
BCK (PO8)
CLOCK
DATA
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM - CD SERVO Section -
(Page 19)
(Page 19)
(Page 19)
HCD-BX30R/BX40R
HCD-BX30R/BX40R
19
19
BUS1
BUS0
BUS2
BUS3
BUS3
BUCK
CCE
REQ
LB
I/O0 – I/O15
D0 – D15
S-RAM
IC921
39
UB 40
OE 41
WE 17
CE 6
79 D+
80 D–
77 USBOC
USB CONTROLLER
IC901
35 USB TXD
SYSTEM CONTROLLER
IC301 (2/3)
CN902
(USB)
3
2
1
D+
D–
78 USBPON
70 CS2
64 RD
65 WR
66 SRLLB
67 SRLUB
64 RD
65 WR
66 SRLLB
67 SRLUB
VBUS
B
DATA, CLOCK,
A-IN, BCK, LRCK,
GATE, ST-REQ
C
BUS0 – BUS3,
BUCK, CCE, REQ
VBUS POWER
ON/OFF SWITCH
IC915
5
1
4
OUT
EN
3
FLG
IN
VBUS
+5V
93
DATA
92
BCK
BCK
A-IN
LRCK
GATE
GATE
ST-REQ
71
LRCK
94
GATE
97
ST-REQ
55
BUS0
56
BUS1
88
RXD1
36 USB RXD
87
TXD1
38 USB RTS
2
DI
76 USB CTS
84
DO
75 USB RESET
1
/RESET
57
BUS2
58
BUS3
59
/BUCK
60
/CCE
96
REQ
7 – 10, 13 – 16,
29 – 32, 35 – 38
18 – 25, 28 – 35
A0 –
A15
A1 –
A16
44 – 42, 27 – 24,
21 – 18, 5 – 1
37 – 43, 46 – 54
73
X2
75
X1
X901
9MHz
TUNER (FM/AM)
AM
FM ANT
AM ANT
L OUT
R OUT
DO/STEREO
R-CH
ST DIN
ST CLK
ST CE
FM 75
Ω
COAXIAL
ANTENNA
26 DATA IN/STEREO
TUNED
6 TUNER TUNED
RDS CLK
18 RDS INT
RDS DATA
7 RDS DATA
28 ST DATA OUT
27 ST CLK
25 ST CE
27 ST CLK
25 ST CE
: USB
CLOCK
DATA
85
DATA
86
CLOCK
(AEP)
PROTECT
D
10
26
SDA
25
SCL
AMP DATA 24
AMP CLOCK 22
TA LINE MUTE 23
STK-ON 53
OUT1
INPUT SELECTOR,
ELECTRICAL VOLUME,
SURROUND/TONE CONTROL
IC304
: AUDIO
: CD PLAY
SIGNAL PATH
R-ch is omitted due to same as L-ch.
: TUNER (FM/AM)
SEL1
VOL1
11
MUTING
Q103
R-CH
23
MUTING
CONTROL
SWITCH
Q340, 341
: AUDIO IN
POWER AMP
IC601
11 CH1 IN
10
MONIT
OR
CH1 OUT+ 4
CH1 OUT– 5
CH1 OUT– 5
13
STBY
J500
R-CH
PHONES
SPEAKER
+
–
–
–
+
R
L
J302
DC
DETECT
Q342 – 344
POWER
MONITOR
Q345
M901
(FAN)
+9V
M
M
AC DET
E
D313
FAN MOTOR
DRIVE
Q316, 317
FAN MOTOR
DETECT
Q307, 347, 348
AUDIO IN
R-CH
J301
CD-L
A
5
3
1
C1
B1
A1
6-2. BLOCK DIAGRAM - MAIN Section -
(Page 18)
(Page 18)
(Page 18)
(Page 20)
(Page 20)
HCD-BX30R/BX40R
HCD-BX30R/BX40R
20
20
SIRCS
4
SYSTEM CONTROLLER
IC301 (3/3)
(AC IN)
T902
SUB POWER
TRANSFORMER
RY901
T901
MAIN POWER
TRANSFORMER
RECT
D911 – 914
D923
D922
D330
D920
PROTECT
D332
D322
D318, 321
D303
AMP B+
F901
F902
TO
POWER AMP
AMP B–
+9V
REGULATOR
IC305
+4V
REGULATOR
Q304 – 306
UNREG SUB
UNREG SUB
SYS +3.3V
EVER +3.3V
+9V
RECT
D907, 908
+4V
RESET SIGNAL
GENERATOR
IC310
RELAY
DRIVE
Q315
LINE
FILTER
LF901
TUNER +9V
58
USB POWER
USB +3.3V
+3.3V
REGULATOR
Q314, 318, 391
5
STBY-RELAY
20
AC CUT
66
I-POWER MONITOR
12
RESET
REMOTE CONTROL
RECEIVER
IC901
X301
32.768kHz
11
10
XCOUT
INOUT
13
15
X302
5MHz
XOUT
XIN
USB MEMORY
S801, 803 – 807,
S809 – 821
(FRONT & TOP PANEL KEYS)
KEY1 – KEY3
RESET
SWITCH
Q309
AC DETECT
Q301
B+ SWITCH
Q312, 313
VM +7V
RECT
D924 – 927
+5V
REGULATOR
IC306
VBUS +5V
CD +1.5V
+1.5V
REGULATOR
IC201
KEY WAKE UP
74
D774
D903
LED DRIVE
Q902
STANDBY
D902
STANDBY LED
89
LED DRIVE
Q901
57
CD ON
AVDD +3.3V
DVDD +3.3V
+3.3V
REGULATOR
Q302, 303,
Q390, 392
RECT
D916 – 919
AC DET
E
PROTECT
D
+9V +4V
VOLTAGE
DETECT
Q393
PROTECT
DETECT
Q333, 338
VFL
FL901
FLUORESCENT
INDICATOR TUBE
T801
DC/DC
CONVERTER
RECT
D904, 905
OSC
Q903
GRID DRIVE
Q905
90
91
93
92
91
93
92
57
P1
FL RESET
FL CS
FL SCLK
FL SD
FL SCLK
FL SD
RSTB
CSB
CLKB
DIN
GR1
AD2, AD1 SG5 – SG35,
SG1 – SG4
GR2 – GR11
FLUORESCENT
INDICATOR TUBE DRIVER
IC902
+9V
52
32
53
54
55
54
55
1 – 31, 61 – 64
33 – 42
59, 60
81 – 83
+9V
REGULATOR
IC307
(E2, E51)
(EXCEPT E2, E51)
VOLTAGE
SELECTOR
S901
Abbrivation
: 120V AC area in E model
E2
: Chilean and Peruvian models
E51
6-3. BLOCK DIAGRAM - PANEL/POWER SUPPLY Section -
(Page 19)
(Page 19)
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