Sony BMZ-K2 / CX-BK2 Service Manual ▷ View online
25
CX-BK2
Checking Location: BD board (Side B)
Adjustment after CD Base Unit (BU-30CBD64NS) is Re-
placed
placed
Perform the “E-F Balance (1 track jump) check”.
+
–
–
BD board
TP (TE)
TP (VC)
oscilloscope
Traverse Waveform
0V
B
level: 1.0
±
0.5 Vp-p
Center of
the waveform
the waveform
A (DC
voltage)
Traverse Waveform
0V
Tracking servo
Sled servo
ON
A (DC
voltage)
voltage)
Tracking servo
Sled servo
OFF
6.
Press the button. (The tracking servo and sledding servo
are turned ON)
Confirm A (DC voltage) at that tome is 0 V.
Confirm A (DC voltage) at that tome is 0 V.
7. To exit from this mode, turn the power off.
Notes:
• Always move the optical pick-up to most inside track when
exiting from this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can
be chipped.
E-F Balance Adjustment
Connection:
Procedure:
1.
1.
Connect an oscilloscpe to test point TP (TE) and TP (VC) on
the BD board.
the BD board.
2.
AC is put in pushing
B
button to enter the CD test mode.
3.
Put the disc (YEDS-18) in to playback the number five track.
4.
Press the button. If it plays, press the button again.
B
(The tracking servo and the sledding servo are turned OFF)
5.
Rotate RV101 on the BD board to adjust A (DC voltage) of
the center of the oscilloscope waveform becomes 0 V.
the center of the oscilloscope waveform becomes 0 V.
Checking Location:
– BD BOARD (Side B) –
B
B
IC101
TP7
(VC)
(VC)
IC103
RV101
E-F Balance
Adjustment
E-F Balance
Adjustment
TP8
(RFAC)
(RFAC)
TP6
(RFDC)
(RFDC)
TP4
(FE)
(FE)
TP2
(TE)
(TE)
26
CX-BK2
MEMO
CX-BK2
27
27
SECTION 7
DIAGRAMS
7-1.
BLOCK DIAGRAM – CD Section –
OPTICAL PICK-UP
BLOCK
PD1
PD2
I5-10
I1-6
LD
VC
VCC
7
5
3
1
2
4
VDD (3.3V)
GND
PD
VR
FOCUS
COIL
TRACKING
COIL
RF AMP
IC103
VC
27
A
6
B
7
C
8
D
9
E
10
F
11
LD
1
PD
2
MOTOR/COIL DRIVE
IC102
VO1+
52
VO1-
47
VO2+
56
VO2-
55
VO3+
2
VO3-
1
M102
(SLED)
M101
(SPINDLE)
VO4+
10
VO4-
5
F+
F-
T+
T-
35
IN1+
34
IN1-
32
IN2+
31
IN2-
27
IN3+
26
IN3-
24
IN4R
8
STBY
MDP
25
SRDR
30
SFDR
29
TRDR
32
TFDR
31
FRDR
34
FFDR
33
DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC101
RFAC
50
29
RFDCI
28
RFDC
16
FE
17
FEI
12
SW
TE_BAL
RFDC
43
FE
39
TE
41
SE
40
66
PCMD
26
RO
4
DATA
R-CH
6
CLOK
5
XLAT
77
SQCK
8
SCLK
15
SCOR
76
SQSO
2
XRST
O-DATA
52
O-CLOCK
55
O-XLT
60
O-SQCK
57
I-SCOR
21
I-SQSO
56
7
SENS
I-SENS
58
SYSTEM CONTROLLER
IC901 (1/3)
85
O-LOD_NEG
O-LOD_POS
O-SLD_POS
O-SLD_NEG
74
I-D_SENSOR
I-SW5-B
I-SW5-A
I-SW4
I-SW3
I-SW2-A
I-SW2-B
I-SW1-A
15
RF AC
18
TE
D/A CONVERTER,
MP3 DECODER
IC104
SDIO
12
23
LO
67
BCLK
BCKIA
13
65
LRCK
LRCKIA
14
71
XTAI
72
XTAO
XI
62
XO
63
5
MIDIO
STAND BY
6
MICK
7
MIACK
39
REQ
1
RESET
19
75
O-ELV_POS
O-ELV_NEG
IO-MIDIO
O-MP3STB
64
O-MICK
O-MICS
O-MILP
62
38
I-MIACK
37
O-MP3RST
19
3
5
I-MP3REQ
65
O-XRST
61
4
66
MICS
MILP
O-PWM3
49
O-PWM2
51
O-PWM1
47
O-LDON
59
73
88
89
70
19
RV101
X201
16.9344MHz
OUT1
FIN
OUT2
RIN
STOCKER MOTOR DRIVE
IC721
M761
(STOCKER)
M
7
9
4
2
87
77
OUT1
FIN
OUT2
RIN
ROLLER MOTOR DRIVE
IC711
M781
(ROLLER)
M
7
9
4
2
76
86
OUT1
FIN
OUT2
RIN
MODE MOTOR DRIVE
IC701
S771
ROTARY ENCODER (MODE)
M771
(MODE)
M
7
9
4
2
S713 (DISC IN (8/12cm))
S714 (DISC IN (8cm))
S715 (DISC OUT)
S716 (STOCKER IN/OUT)
S711 (DISC INSERT(8/12cm))
S717 (DISC POSITION)
S718 (STOCKING)
1
G
2
3
4
69
90
67
68
I-ELV_E3
I-ELV_E2
I-ELV_E1
I-ELV_E0
I-SLD_E3
I-SLD_E2
I-SLD_E1
I-SLD_E0
S702
ROTARY ENCODER
(STOCKER POSITION)
1
2
3
4
82
79
83
80
78
84
81
(ON : When disc insert)
S711
S713
S714
S715
S717
S718
(ON : When disc out from play position)
In the midst disc is moving
between play position and stocker
ON : disc is play position side
OFF : disc is stocker side
between play position and stocker
ON : disc is play position side
OFF : disc is stocker side
OFF: In the Midst disc is moving
between play position and
stocker
stocker
(ON : Play position)
(8cm disc only)
ON : Play position
S716
from stocker
ON : The moment disc in/out
G
AUTOMATIC
POWER CONTROL
Q101
E-F BALANCE
(1 TRACK JUMP)
M
M
CD-L
A
(Page 28)
• SIGNAL PATH
: CD
• R-ch is omitted due to same as L-ch.
LEVEL SHIFT
Q731
DISC INSERT
DETECT SENSOR
IC751
CX-BK2
28
28
• SIGNAL PATH
: CD
: TUNER
: REC
: USB
: AUX IN
: LINE IN (AUDIO)
: VIDEO
50 O-MDATA
48 O-MCLK
46 O-PLLCE
9 I-TUNE
8 I-STEREO
6 I-DO
34
FOUTL
37
20
FOUTR
SDA
21
SCL
13
ACK
12
INT_DATA
USB INT
5
OUTL
13
10 9
COM X
B
A
6
OUTR
26 D+
36 FINL
15 X2
12 X0
14 X1
39 FINR
25 D –
23 VBUS
• R-ch is omitted due to same as L-ch.
FM/AM TUNER PACK
AM LOOP
FM ANT
AM ANT
TUNER-L
TUNER-R
CE
PLLCE
R-CH
TUNED
TUNED
STEREO
STEREO
DO
DO
DI
MDATA
CLK
MCLK
PLLCE
TUNED
STEREO
DO
MDATA
MCLK
MDATA
MCLK
33 I-USB_VBUS_ON
USB VBUS
24 I2C-USB_DATA
USB DATA
25 I2-USB_CLK
USB CLK
31 I-USB_ACK
USB ACK
32 I-USB_INT
44 O-SHIFT_DATA
USB INT
USB ON
CD ON
TUNER ON
INH
SHIFT SO
CLK
LCK
BAND-PASS
FILTER
Q902
USB ON/OFF
SWITCH
Q702
USB INTERFACE
IC700
AUX AUDIO
SELECTOR
IC501
16
18 3
Q10
15
Q9
14
Q8
13
Q7
12
Q6
11
Q5
10
Q4
9
Q3
LCK
CLOCK
DATA
SO
4 5
SHIFT REGISTER
IC703
18
3
SO
17
Q11
10
Q4
15
Q9
6
Q0
99
I-LEVEL
LCK
CLOCK
DATA
4 5
16 Q10
9 Q3
14 Q8
SHIFT REGISTER
IC701
J700
(USB)
D+
D –
VBAS
R-CH
R-CH
R-CH
JK602 (1/2)
R-CH
Q608
LINE AMP
Q605
MUTING
Q607
43 O-SHIFT_CLK
45 O-SHIFT_STB
LEVEL
SYSTEM CONTROLLER
IC901 (2/3)
FM 75 Ω
(COAXIAL)
USB ACK
USB CLK
USB DATA
USB VBUS ON
3
2
1
1
2
XTI
XTO
X700
12MHz
V-BASS
18
19
20
21
22
23
24
B
A
B
A
LINE IN
J701
JK603
VIDEO
VIDEO OUT
AUDIO
L
R
AUX IN
L
R
R-CH
JK602 (2/2)
AUX OUT
L
R
INPUT SELECT
IC601 (1/2)
29
TOUTL
40 CD-L
39 TUNER-L
35 RECB-2
37 AUX-L
CD-L
A
MDATA, MCLK,
LEVEL
D
(Page 29)
V-BASS,
18 – 24
C
(Page 29)
OUT-L
B
(Page 29)
(Page 27)
INH, SHIFT SO,
CLK, LCK
E
(Page 29)
USB ON,
CD ON, TUNER ON
F
(Page 30)
7-2.
BLOCK DIAGRAM – TUNER/USB Section –
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