Sony CX-JV1 / JAX-V1 Service Manual ▷ View online
17
CX-JV1
SECTION 4
TEST MODE
[COLD RESET]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
the set to the customer.
Procedure:
1. In the standby status, while pressing the
1. In the standby status, while pressing the
x
key, press the
[POWER]
key.
2. The set is reset, then becomes standby status.
[GC TEST MODE]
Procedure:
1. Press the
1. Press the
[POWER]
key to turn the power on.
2. While pressing the
x
key, press the
[POWER]
key for 5 sec-
onds.
3. It change displays in order of model type, version and suffix at
2 seconds interval, then the display is back to normal status.
[AMP TEST MODE]
Procedure:
1. In the status where AC plug is disconnected, while pressing
1. In the status where AC plug is disconnected, while pressing
the
[VIDEO/AUX]
key, connect the AC plug to turn the power
on. Then enter the AMP test mode and display “AMP TEST”.
2. If turn the
[VOLUME]
knob clockwise, it displays “VOLUME
MAX”, and if turn the knob counterclockwise, it displays
“VOLUME 0”.
“VOLUME 0”.
3. If the
[TREBLE]
and
[BASS]
knobs are turned clockwise or
counterclockwise, it change displays in order of “EQ MAX”,
“EQ MIN” and “EQ FLAT”.
“EQ MIN” and “EQ FLAT”.
4. To release from this mode, disconnect the AC plug and turn
the power off.
[DISC TRAY LOCK]
Procedure:
1. Press the
1. Press the
[POWER]
key to turn the power on.
2. While pressing the
x
key, press the
[ OPEN/CLOSE]
key for
5 seconds.
3. The message “LOCKED” is displayed and the tray is locked.
(Even if exiting from this mode, the tray is still locked)
4. To release this lock, while pressing the
x
key, press the
[ OPEN/CLOSE]
key for 5 again.
5. The message “UNLOCKED” is displayed and the tray is un-
locked.
[CD REPEAT 5 LIMIT CANCEL MODE]
• Number of repeat for CD playback is 5 times when the repeat
mode is “REPEAT”. This mode enables CD to repeat playback
for limitless times.
for limitless times.
Procedure:
1. Press the
1. Press the
[POWER]
key to turn the power on.
2. In the repeat on status, while pressing the
x
key, press the
[CD]
key to enter the CD repeat 5 limit cancel mode and re-
peat mark blinks on the fluorescent indicator tube.
3. To release this mode, press the
[POWER]
key to turn the power
off.
[TUNER TEST MODE]
Procedure:
1. In the status where AC plug is disconnected, while pressing
1. In the status where AC plug is disconnected, while pressing
two keys of
[POWER]
and
x
simultaneously, connect the AC
plug to turn the power on.
2. The massage “TUN TEST” is displayed on the fluorescent in-
dicator tube, and tuner test mode is set.
Z
Z
[CHANGE-OVER OF AM TUNER STEP BETWEEN
9 kHz AND 10 kHz]
(Except Saudi Arabia model)
9 kHz AND 10 kHz]
(Except Saudi Arabia model)
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press the
1. Press the
[POWER]
key to turn the power on.
2. While pressing the
[TUNER]
key, press the
[POWER]
key to
the display on fluorescent indicator tube changes to “AM 530
kHz” (10 kHz step) or “AM 531 kHz” (9 kHz step), and thus
the channel step is changed over.
kHz” (10 kHz step) or “AM 531 kHz” (9 kHz step), and thus
the channel step is changed over.
[FUNCTION CHANGE MODE]
• Select either TV, VIDEO or AUX (MD) of the external function
input.
Procedure:
1. Press the
1. Press the
[POWER]
key to turn the power on.
2. While pressing the
[VIDEO/AUX]
key, press the
[POWER]
key.
3. Each time this operation is operated, it change displays in or-
der of “TV”, “VIDEO” and “AUX”.
[TC (TAPE CASSETTE) TEST MODE]
• This mode can be used for operation check of zero return sec-
tion and automatic REC/PLAY section.
Procedure:
1. In the status where AC plug is disconnected, while pressing
1. In the status where AC plug is disconnected, while pressing
the
[TAPE]
key, connect the AC plug to turn the power on.
2. The massage “TC TEST” is displayed on the fluorescent indi-
cator tube, and TC (tape casette) test mode is set.
Zero Return Section:
Press the
M
or
m
key, tape is rewound to the position of
counter zero.
Automatic REC/PLAY Section:
Press the
[REC]
key
r
Tape is rewound to the position of counter zero
r
Tape recording starts
r
Press the
x
key
r
Tape recording stops
r
Tape is rewound to the position of counter zero
r
Tape playback starts
18
CX-JV1
RFDC signal waveform
Connecting Location: BD board (Conductor Side)
(See page 19)
CD SECTION
Note:
1. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
2. Use an oscilloscope with more than 10M
2. Use an oscilloscope with more than 10M
Ω impedance.
3. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
RFDC LEVEL CHECK
Connection:
Procedure:
1.
1.
Connect an oscilloscope to test point TP (RFDC) and TP (VC)
on the BD board.
on the BD board.
2.
Turn the power on.
3.
Put the disc (YEDS-18) in to playback the number five track.
4.
Confirm that oscilloscope waveform is clear and check RFDC
signal level is correct or not.
signal level is correct or not.
Note:
A clear RFDC signal waveform means that the shape
◊ can be
clearly distinguished at the center of the waveform.
+
—
—
BD board
TP (RFDC)
TP (VC)
oscilloscope
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
TIME/DIV: 500 ns
level: 0.6
±
0.15 Vp-p
RFAC LEVEL CHECK
Connection:
Procedure:
1.
1.
Connect an oscilloscope to test point TP (RFAC) and TP (VC)
on the BD board.
on the BD board.
2.
Turn the power on.
3.
Put the disc (YEDS-18) in to playback the number five track.
4.
Confirm that oscilloscope waveform is clear and check RFAC
signal level is correct or not.
signal level is correct or not.
Note:
A clear RFAC signal waveform means that the shape
◊ can be
clearly distinguished at the center of the waveform.
RFAC signal waveform
Connecting Location: BD board (Conductor Side)
(See page 19)
+
—
—
BD board
TP (RFAC)
TP (VC)
oscilloscope
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
TIME/DIV: 500 ns
level: 1.0
±
0.4 Vp-p
S-CURVE CHECK
Connection:
Procedure:
1.
1.
Connect an oscilloscope to test point TP (FE) and TP (VC)
on the BD board.
on the BD board.
2.
While depressing the key, insert an AC plug.
3.
Put the disc (YEDS-18) in and press the key and actuate
the focus search. (actuate the focus search when disc table is
moving in and out)
the focus search. (actuate the focus search when disc table is
moving in and out)
4.
Check the oscilloscope waveform (S-curve) is symmetrical
between A and B. And confirm peak to peak level within 2 – 1
Vp-p.
between A and B. And confirm peak to peak level within 2 – 1
Vp-p.
S-curve waveform
Note:
¥ Try to measure several times to make sure than the ratio of A : B
or B : A is more than 10 : 7.
¥ Take sweep time as long as possible and light up the
brightness to obtain best waveform.
Connecting Location: BD board (Conductor Side)
(See page 19)
+
—
—
BD board
TP (FE)
TP (VC)
oscilloscope
A
B
symmetry
within 2
±
1 Vp-p
N
x
SECTION 5
ELECTRICAL ADJUSTMENTS
19
CX-JV1
Connecting Location: BD board (Conductor Side)
ADJUSTMENT AFTER CD BASE UNIT (BU-30BD61S) IS
REPLACED
REPLACED
Perform the “E-F Balance (1 track jump) adjustiment”.
+
–
–
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 key. (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 release 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 (1 TRACK JUMP) 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
key to enter the CD test mode.
3.
Put the disc (YEDS-18) in to playback the number five track.
4.
Press the key. If it plays, press the key again.
(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.
Connecting Location:
– BD BOARD (Conductor Side) –
N
N
N
N
IC101
TP7
(VC)
(VC)
IC103
RV101
E-F Balance
(1 Track Jump)
Adjustment
E-F Balance
(1 Track Jump)
Adjustment
TP8
(RFAC)
(RFAC)
TP6
(RFDC)
(RFDC)
TP4
(FE)
(FE)
TP2
(TE)
(TE)
CX-JV1
21
21
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – CD SERVO Section –
9
RIN
LM-R
4 OUT1
2 OUT2
M751
(LOADING)
M
LOADING MOTOR DRIVE
IC701
7
FIN
LM-F
9
RIN
TM-R
4 OUT1
2 OUT2
M741
(TABLE)
M
TABLE MOTOR DRIVE
IC712
7
FIN
TM-F
(Page 24)
C
MPEG VIDEO/AUDIO DECODER
IC802 (1/2)
A/D
CONVERTER
VO1+
VO1–
27
24
26
32
31
35
34
2
1
10
5
RFAC
ASYO
ASYI
FILTER
FILO
PCO
CLTV
FILI
DIGITAL PLL
ASYMMETRY
CORRECTOR
EFM
DEMODULATOR
DIGITAL SIGNAL PROCESSOR
IC101 (1/2)
MDP
DIGITAL
CLV
PROCESSOR
32K
RAM
ERROR
CORRECTOR
INTERNAL BUS
SQCK
SQSO
MUTE
EXCK
PCMD
DATA
BCK
LRCK
C4M
XTSL
XTAO
XTAI
BLCK
LRCK
WDCK
D/A
DIGITAL
INTERFACE
CLOCK
GENERATOR
SUBCODE
PROCESSOR
SCOR
WFCK
XUGF
GFS
EMPH
SENS
DATA
CLOK
XLAT
SBSO
AUX07
AUX05
AUX06
SE
TE
FE
RFDC
FOCUS/
TRACKING/SLED
SERVO DSP
FOCUS/TRACKING/SLED
PWM GENERATOR
SFDR
IN3+
IN4R
IN3–
VO3+
VO3–
IN2+
IN2–
IN1+
IN1–
8
STBY
SRDR
TFDR
TRDR
FFDR
FRDR
SSTP
COUT
MIRR,
DFCT, FOK
DETECTOR
SERVO AUTO
SEQUENCER
SERVO
INTERFACE
CPU INTERFACE
SCLK
TO CPU INTERFACE
FOK
MIRR
DFCT
VO4+
VO4–
M101
(SPINDLE)
MOTOR
DRIVE
XRST
MOTOR
DRIVE
COIL
DRIVE
VO2+
VO2–
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)
• SIGNAL PATH
: CD PLAY
56
55
47
52
AUX09
AUX10
AUX14
A
(Page 22)
DATA, BCK, LRCK
GFS
CLK
FOK
B
(Page 22)
CLK, GFS, FOK
AUX13
33
31
32
29
30
34
19
8
40 41 39 43
22
20
21
26
TO SERVO AUTO
SEQUENCER
50
53 55
XPCK
12
52 54
49
48
25
76 77
66
71
16
69
72
67
65
17
2
79 80
15
7
4 6 5
10 11 13 68
3
68
67 14 39
20 34
C2PO
AUX12
14
36
38
6
7
8
9
16
18
11
10
12
2
1
E
B
A
+3.3V (CD)
F
DETECTOR
A
B
C
D
RF
SUMMING
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
RFAC
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
LD
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(A-MAX.3T)
SW
PD
I-V AMP
EQ
IN
15
3
4
EQ
AC
SUM
17
FEI
RF DC
AMP
28
RFDCO
29
RFDCI
RFAC
VCA
AUX04
69
AUX08
18
19
TE BAL
E-F BALANCE
(1 TRACK JUMP)
RV101
X201
16.9344MHz
AUX02
11
D/A
CONVERTER
IC805
3
2
1
AO3
AO2
AO1
7
6
CLK
8
LD
DI
74
CD NUMBER SENS
20
CD BUSY SW
SYSTEM CONTROLLER
IC901 (1/2)
S751
OPEN/CLOSE
DETECT
OPEN
CLOSE
LEVEL SHIFT
Q731
TABLE ADDRESS
SENSOR
IC731
+
ROTARY
ENCODER
S711
DISC TRAY
ADDRESS DETECT
LM-F, LM-R,
TM-F, TM-R
(LIMIT)
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