Sony BMZ-K2 / CX-BK2 Service Manual ▷ View online
CX-BK2
29
29
7-3.
BLOCK DIAGRAM – AMP Section –
J521
POWER
THERMAL DETECT
POWER MONITOR
RY501
R-CH
PHONES
5
SPEAKER
+
–
–
–
+
R
L
JK502
M301
(FAN)
(FAN)
R-CH
R-CH
– VL
–VP
+VP
– VH
OVER LOAD
DETECT
Q505
THERMAL
DETECT
Q610, 611
OUTPUT LEVEL
DETECT
Q617, 622 – 624
ROTARY
ENCODER
S301
OVER CURRENT
DETECT
Q013
RELAY DRIVE
Q530
BIAS
Q507, 509
FEED BACK
SWITCH
Q625
FINAL DRIVE
Q531, 533
SWITCHING
Q619
SWITCHING
Q618
FAN MOTOR
DRIVE
Q301 – 303
+
+
R-CH
R-CH
+
HOLD
Q012
+
+
TH501, 502
R-CH
R-CH
R-CH
CASCADE
Q511, 513, 515
PRE DRIVE
Q517
MUTING
Q525
+
MUTING
CONTROL
Q527
CURRENT
MIRROR
Q521, 523
FREQUENCY
CONTROL
Q614 – 616
BBE ON/OFF
CONTROL
Q623
R-CH
D611
+VL
+VH
OUTPUT LEVEL
DETECT
Q620, 621
1
7
6
BASS BOOST ENHANCER
IC603
ELECTRICAL VOLUME
IC601 (2/2)
INA
BBE
14
VREF
12
GOUT
OUTA
25
OUT 2
27
BB_A2
26
BB_B2
28 VOLIN2
13
GIN
BOOST
CONTROL
Q617 – 620
BOOST
CONTROL
Q624
+
R-CH
OUT-L
V-BASS,
18 –24
18 –24
21
DATA
22
CLOCK
LEVEL
MCLK
MDATA
19
SAOUT
39
O-MUTE
98
I-POWER_MONI
42
I-HEADPHONE
40
O-POWER
23
22
21
24
20
19
18
LCK
CLK
SHIFT SO
LED631 – 635
(DISC INDICATOR 1 – 5)
V-BASS
G
(Page 30)
H
(Page 30)
J
(Page 30)
B
(Page 28)
C
(Page 28)
MDATA, MCLK,
LEVEL
LEVEL
D
(Page 28)
INH, SHIFT SO,
CLK, LCK
CLK, LCK
E
(Page 28)
M
M
• SIGNAL PATH
: TUNER
• R-ch is omitted due to same as L-ch.
76
79
78
80
LIQUID CRYSTAL
DISPLAY
LCD001
67 – 70
1 – 65
COM1 – COM4
S1 – S65
OSC
C105, R101
LCD DRIVER
IC001
OSC
16
6 – 15
Q0 – Q9
Q10
DI
CL
CE
77
3
INH
DATA
4 CLK
5 LCK
5 LCK
53 O-LCD_DATA
54 O-LCD_CLK
63 O-LCD_CE
54 O-LCD_CLK
63 O-LCD_CE
18 SO
93 I-RE_VOL
2 DATA
3 CLK
4 LCK
3 CLK
4 LCK
INH
S311 – 320, 331 – 339,
S341 – 344
17
18
X901
32.768kHz
XT1
XT2
14
15
X902
5MHz
X1
X2
23 I-RMC
REMOTE CONTROL
RECEIVER
IC603
LCK
CLK
LED203
LED DRIVE
IC602
i-Bass
34
STBY
LED202
STANDBY/ON
VOLUME
ROTARY
ENCODER
S302
92 I-RE_BAS
BASS
ROTARY
ENCODER
S303
91 I-RE_TRE
TREBLE/MIDDLE
ROTARY
ENCODER
S304
94 I-RE_JOG
MULTI JOG
LED204 – 221
(ILLUMINATION)
12
6 – 11
Q1 – Q6
Q7
97 – 95
I-KEY1 – I-KEY3
LED251 – 254
(LCD BACKLIGHT)
13, 14
Q8, Q9
LED601
(DISC SLOT ILLUMINATION)
LED DRIVE
IC601
41
I-POWER_DOWN
16
RESET
POWER_DOWN
RESET
SYSTEM CONTROLLER
IC901 (3/3)
LED DRIVE
Q601 – 605
CX-BK2
30
30
+7V
REGULATOR
IC001
POWER TRANSFORMER
(SUB)
PT006
POWER TRANSFORMER
(MAIN)
PT001
RECT
D002
D002
RY001
VL
VL
RECT
D004
D004
RECT
D120, 121
RECT
D114, 115
RECT
D116, 117
VSTBY
D612
+12V
VH
VH
RECT
D007 – 010
REG
– VL
REG
+VL
– VH
+VH
+3.3V
REGULATOR
Q018, 019
+9V
REGULATOR
Q890
DC UNBALANCE
DETECT
D112, 113
+12V
REGULATOR
IC003
REGULATOR
CONTROL
Q891, 892
REG
B+ SWITCH
Q901, 906
RELAY DRIVE
Q101
RECT
D005, 006
+4V
REGULATOR
IC905
VDD
D906
EVER 3.3V
D902
RESET SIGNAL
GENERATOR
IC902
VOLTAGE
DETECT
IC904
B+ SWITCH
Q024, 025
B+ SWITCH
Q700, 701
AC DETECT
Q105, 106
D002
FR VDD (3.3V)
+2.5V
REGULATOR
IC121
SERVO
+2.5V
TU 9V
+10V
REGULATOR
IC101
+9V
REGULATOR
Q050, 051
VOLTAGE
DETECT
Q107 – 109
OVER CURRENT
DETECT
Q102 – 104
+5V
REGULATOR
IC701
VM 10V
USB 5V
VCC 9V
POWER
POWER MONITOR
CD VM (7V),
+7V
M+12V,
VM, +12V
VDD (3.3V)
POWER_DOWN
CD ON
TUNER ON
USB ON
RESET
(AC IN)
FAN B+
+VL
– VL
DC UNBALANCE
DETECT
D139, 140
+VH
– VH
+
+
+
THERMAL DETECT
G
(Page 29)
POWER,
POWER MONITOR
POWER MONITOR
H
(Page 29)
USB ON,
TUNER ON, CD ON
TUNER ON, CD ON
F
(Page 28)
POWER_DOWN,
RESET
RESET
J
(Page 29)
7-4.
BLOCK DIAGRAM – POWER SUPPLY Section –
CX-BK2
31
31
7-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– BD Board –
no mark : CD PLAY
– USB AUX Board –
no mark : USB
– Other Board –
no mark : TUNER
(
– BD Board –
no mark : CD PLAY
– USB AUX Board –
no mark : USB
– Other Board –
no mark : TUNER
(
) : CD PLAY
[
] : USB
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER
J
: CD
c
: DIGITAL OUT
d
: USB
N
: MIC
G
: AUX IN
q
: LINE IN (AUDIO)
r
: VIDEO
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• Circuit Boards Location
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
tuner unit
main board
speaker board
ACDC board
PT board
AMP board
SW (3) board
speaker motor board
SW (4) board
roller motor board
connector board
BD board
mode motor board
headphone board
right button (2) board
LED board
jog board
USB AUX board
key LED RMC board
LCD VOL board
left button board
right button (1) board
SW (1) board
SW (2) board
CX-BK2
32
32
7-6.
PRINTED WIRING BOARD – BD Board –
•
See page 31 for Circuit Boards Location.
:Uses unleaded solder.
IC101
B-6
IC102
C-6
IC103
C-5
IC104
B-5
IC121
C-5
Q101
C-3
• Semiconductor
Location
Ref. No.
Location
E
TP7(VC)
TP4(FE)
TP2(TE)
TP8(RFAC)
TP6(RFDC)
A
A-MAX. 3
B
CN507
R284
C272
1
2
A
B
C
D
3
4
5
6
7
IC104
IC101
IC121
IC102
IC103
(Page 37)
(Page 37)
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