Sony CX-LMN5 / XR-MN5 Service Manual ▷ View online
25
CX-LMN5
Checking Location: BD board (Side B)
+
–
–
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
C (DC
voltage)
voltage)
Tracking servo
Sled servo
OFF
6.
Press the (CD)
u
button. (The tracking servo and sledding
servo are turned ON)
Rotate RV101 on BD board and adjust the C (DC voltage)
is almost equal to the A (DC voltage) in step 4.
Rotate RV101 on BD board and adjust the C (DC voltage)
is almost equal to the A (DC voltage) in step 4.
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
u
(CD) button to enter the CD test
mode.
3.
Put the disc (YEDS-18) in to playback the number five track.
4.
Press the (CD) button. If it plays, press the (CD)
u
(CD) button. (The tracking servo and the
button again. (The tracking servo and the sledding servo are
turned OFF)
turned OFF)
5.
Check the level B of the oscilliscope's waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than
± 10%
Checking Location:
– BD BOARD (Side B) –
u
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)
27
27
CX-LMN5
SECTION 8
DIAGRAMS
• Waveforms
– BD Board –
– BD Board –
1.2Vp-p
1
TP8 (RFAC)
200mV/DIV, 1
µs/DIV
2
IC101 us (XTAO)
1V/DIV, 40ns/DIV
3.3Vp-p
59.1ns (16.9MHz)
3
IC901 qd (CF2)
1V/DIV, 40ns/DIV
2.0Vp-p
115ns
(8.64MHz)
4
IC901 q; (XT2)
1V/DIV, 20
µs/DIV
1.9Vp-p
30.5
µ
s
(32.768kHz)
– MAIN Board –
MODE MOTOR board
ROLLER MOTOR board
STOCKER MOTOR board
SW (1) board
CONNECTOR board
ST ENCODER board
PT board
MAIN board
FRONT board
FAN board
HP board
CD-KEY board
BD board
SW (2) board
SW (3) board
SW (4) board
SENSOR board
• Circuit Boards Location
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• 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.
∗
: Impossible to measure
•
f
: internal component.
•
2
: nonflammable resistor.
•
1
: fusible resistor.
•
C
: panel designation.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : Power on
no mark : Power on
• 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.
• Waveforms are taken with a oscilloscope.
• 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
d
: AUX
E
: PB (TAPE)
a
: REC (TAPE)
c
: DIGITAL OUT
• Abbreviation
AUS
: Australian model.
CND : Canadian model.
SP
SP
: Singapore model.
TW
: Taiwan model.
KR
: Korean model.
TH
: Thai model.
• Indication of transistor
B
These are omitted.
C
E
Q
C
B
These are omitted.
E
Q
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
B
These are omitted.
C
E
Q
Ver 1.1 2003. 06
28
28
CX-LMN5
8-1. Block Diagram — BD, Changer Section —
: CD
• Signal Path
: DIGITAL OUT
OPTICAL PICK-UP
BLOCK
PD1
PD2
I5-10
I1-6
LD
VC
VCC
7
5
3
1
2
4
+
3.3V
GND
PD
VR
LD
DRIVE
FOCUS
COIL
TRACKING
COIL
Q101
RF AMP
IC103
VC
27
A
6
B
7
C
8
D
9
E
10
F
11
LD
1
PD
2
IC102
MOTOR/COIL DRIVE
VO1+
52
VO1-
47
VO2+
56
VO2-
55
VO3+
2
VO3-
1
M
(SLED)
M102
M101
VO4+
10
VO4-
5
M
(SPINDLE)
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 SIGNAL PROC.
IC101
DIGITAL SERVO
64
D OUT
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
L-CH
D OUT
LOUT
ROUT
LOUT
ROUT
16.9344MHz
6
CLOK
5
XLAT
77
SQCK
8
SCLK
15
SCOR
76
SQSO
2
XRST
O-DATA
63
O-CLK
62
O-XLT
73
O-SQCK
61
I-SCOR
5
I-SQS0
60
7
SENS
I-SENS
75
IC901 (1/2)
SYSTEM CONTROLLER
50
O-LOD_NEG
O-LOD_POS
O-SLD_POS
O-SLD_NEG
36
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
IC104
D/A CONV,
MP3 DECODER
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
37
O-ELV_POS
O-ELV_NEG
IO-SDA
O-MP3STB
70
MICK
O-MICS
O-MILP
71
64
I-MIACK
65
O-MP3RST
66
3
67
I-MP3REQ
69
O-XRST
72
4
68
MICS
MILP
O-PWM3
54
P-PWM2
53
O-PWM1
29
O-LDON
74
35
57
58
34
+2.5V
REG
1
3
IC121
DVDD (3.3V)
+2.5V
19
RV101
X201
AVDD(3.3V)
OUT1
FIN
OUT2
RIN
IC721
STOCKER MOTOR DRIVE
M761
(STOCKER)
M
7
9
4
2
52
49
OUT1
FIN
OUT2
RIN
IC711
ROLLER MOTOR DRIVE
M781
(ROLLER)
M
7
9
4
2
38
51
OUT1
FIN
OUT2
RIN
IC701
MODE MOTOR DRIVE
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
33
59
31
32
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
43
42
47
45
41
48
44
(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
LEVEL
SHIFT
Q731
DISC INSERT
DETECT SENSOR
IC751
A
MAIN SECTION
G
29
29
CX-LMN5
— Main Section —
: TUNER
: CD
• Signal Path
• R-CH is omitted due to same as L-CH
: AUX
: PB (TAPE)
: REC (TAPE)
BIAS
OSC
VDD
ERASE
HEAD
REC/PB
HEAD
DECK BLOCK
80
79
81
SYSTEM CONTROLLER
IC901 (2/2)
82
L
R
AUX IN
J202
HEADPHONES
R CH
L
R
FUCTION
KEY
S924-931
TUNER PACK
L-CH
L-CH
R-CH
R-CH
R-CH
D OUT
D IN
CLK
CE
TUNED
R-CH
84
REC/PB
SWITCH
Q305,307,309
L451
BIAS OSC
Q601
T SOL
DRIVE
DRIVE
Q903,905
MOTOR
DRIVE
Q902,904
98
77
86
FUCTION
KEY
S932-941
18
VOL
ENCODER
S901
19
27
D251-253
RELAY
DRIVE
AC
IN
PT251
POWER TRANSFORMER
(SUB)
Q008
RY251
17
44
+9V
FUNCTION
IC601
33
28
35
2
31
27
R-CH
26
7
22
78
83
STEREO
FM SIGNAL
RDS DATA
RDS INT
6
R-CH
R OUT
R-CH
L OUT
3
100
1
99
R-CH
J201
SPEAKER
FL
DISPLAY
FL901
POWER
CONTROL
Q021
+9V
Q606
FIL1
IC001
1
3
AC
DET
Q063,064
S250
120V
230-240V
220V
D011
93
MECHA BLOCK
PLAY
R REC
F REC
PACK
END
DECK
MOTOR
J602(1/2)
SFR451
Q453,454
BIAS
SWITCH
Q451,452
VM
97
M
2
CD
DIGITAL
OPTICAL
IC603
(AEP, UK)
1
3
D OUT
D VDD
: DIGITAL OUT
76
2
40
LEVEL
SHIFT
Q602,603
18
86
LEVEL
SHIFT
Q604,605
19
25
AGC
Q652,653
8
BOOST
CONT
Q680-682
BASS
SWITCH
Q683-685
90
92
MUTE
CONT
CONT
Q235
95
15
BASS
IC602
1
6
13
12
MUTE
Q101
Q117,119
Q103,105,107,109
Q111,113,115,127
Q111,113,115,127
PRE
AMP
POWER
AMP
DC
DET
THERMAL
DET
Q123
Q280,281
TH101
OVER LOAD
DET
Q250,251
SUB
WOOFER
J602(2/2)
FAN
DRIVE
Q291-293
VM
24
25
23
GRID
BUFFER
Q996-999
FR VDD
-VFL
FIL2
BASS
ENCODER
S922
20
TREBLE
ENCODER
S923
21
D901
STAND BY
LED
DRIVE
Q994
28
D902
i-BASS
9
10
X901
32.768kHz
12
13
X902
8.64MHz
+VP
VP
SWITCH
Q201,207
DC
DET
Q203,205
+VL
-VP
SWITCH
Q202,204,206
DC
DET
Q208,210
-VH
TP120
120
110
0
PT253
POWER TRANSFORMER
PT252
POWER TRANSFORMER
11
17
12
16
13
15
11
17
12
16
13
15
FIL2
FIL1
RY252
D001
D002
-VFL
-VFL
REG
REG
Q001-003
VM
REG
Q006,011
Q012,015
Q012,015
VCC
REG
REG
Q009,010
9V
REG
Q890-892
VDD
REG
REG
Q018,019
3.3V
REG
REG
Q020
D012
+VH
-VH
+VL
-VL
VM
VCC
9V
CD 7V
FR VDD
D VDD(3.3V)
A VDD(3.3V)
D077
OVER CURR
DET
Q060-062
D401
D078
D402
D072
D076
RESET
Q065,066
-VP
D280
96
IC902
7
2
3
RESET
SWITCH
Q901
8
IC904
1
3
30
V STBY
D906
D908
µCON +B
D902
D909
IC905
1
4
BD, CHANGER
SECTION
SECTION
TU ON
CD ON
O POWER
RMC
RESET
PWR DOWN
TU DI
TU CL
TU CE
TU DO
TU TUNED
PB2
R REC SW
FUNC DATA
KEY2
RE VOL
LED STBY
KEY1
RDS SIG
RDS DATA
TU STEREO
RDS CLK
PLAY SW
TA MOTOR
END SW
TA SOL
BIAS
F REC SW
PACK SW
FUNC CLK
BASS1
BASS3
MUTE
HOLD
FL DO
FL CLK
FLSTB
RE BASS
RE TREVLE
LED BASS
XT1
XT2
CF1
CF2
AUX-L
OUT-L
TUNER-L
PBP-L
CD L
OUT-R
BAS1 L
PBOL
RECOUT-L
SI
SC
BAS2 L
VOL IN L
IN L
OUT L
G IN
G OUT
VOLTAGE
SELECTOR
7V
REG
REMOTE
CONTROL
RECEIVER
RESET
VDD
REG
REG
EXCEPT E
EXCEPT E
E
E
A
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