Sony DV-7000 Service manual
D-V7000
SERVICE MANUAL
Ver 1.1 2000. 02
SPECIFICATIONS
E Model
Chinese Model
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM-2401AAA
Optical Pick-Up Name DAX-01A2
MICROFILM
PORTABLE VIDEO CD PLAYER
TABLE OF CONTENTS
1. SERVICING NOTES ............................................... 3
2. GENERAL ................................................................... 4
3. DISASSEMBLY ......................................................... 5
4. SERVICE MODE (TEST MODE)..................... 7
5. ELECTRICAL ADJUSTMENTS......................... 8
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.
6. DIAGRAMS
6-1. Block Diagram ................................................................ 11
6-2. Schematic Diagram – MAIN Board (1/2) – ................... 17
6-3. Schematic Diagram – MAIN Board (2/2) – ................... 21
6-4. Printed Wiring Board – MAIN Board – ........................ 24
6-5. Printed Wiring Board – LCD Board –........................... 27
6-6. Schematic Diagram – LCD Board –.............................. 28
6-7. IC Pin Function Description ........................................... 38
7. EXPLODED VIEWS ................................................ 46
8. ELECTRICAL PARTS LIST ............................... 49
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! ON THE SCHEMA TIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
– 2 –
SECTION 1
current value
A: less than 48 mA
AC2211397
r
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body .
During repair, pay attention to electrostatic breakdown and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objecti ve lens.
Before Replacing the Optical Pick-Up Block
Please be sure to check thoroughly the parameters as par the “Optical Pick-Up Block Checking Procedures” (Part No.: 9-960-027-
11) issued separately before replacing the optical pick-up block.
Note and specifications required to check are given below.
• FOK output: IC601 (£ pin (FOK)
When checking FOK, remove the lead wire to disc motor.
• S curve P-to-P value: 0.6-1.8 Vp-p IC501 !§ pin
When checking S curve P-to-P value, remove the lead wire to
disc motor.
• RF signal P-to-P value: 0.8-1.2 Vp-p
• Traverse signal P-to-P value: 1.2 Vp-p
• The repairing grating holder is impossible.
Precautions for Checking Emission of Laser Diode
Laser light of the equipment is focused by the object lens in the
optical pick-up so that the light focuses on the reflection surface
of the disc.
Therefore, be sure to keep your eyes more than 30 cm apart from
the object lens when you check the emission of laser diode.
• Method-2 (In the service mode or normal operation):
Check the value of current flowing in the laser diode.
1. Remove the upper cabinet.
2. Read the current printed on the rear side of the optical pick-
up. (Print on the rear side of the optical pick-up)
3. Connect a digital voltmeter as shown in Fig. 2.
4. Press the ^ key.
5. Calculate the current value by the r eading of the digital volt-
meter.
Reading of the digital voltmeter (V) ÷ 4.7 (Ω) = current value
(A) (Example) Reading of the digital voltmeter of 0.2256 V:
0.2256 V ÷ 4.7 Ω = 0.048 (A) = 48 mA
6. Check that the current value is within the following range.
• Current value of the label +5 mA (25˚C)
–11
Variation by temperature: 0.4 mA/˚C
Current increases with temperature increased.
Current decreases with temperature decreased.
If the current is more than the range above, there is a trouble
in the automatic power control circuit or the laser diode is in
deterioration.
If less than the range, a trouble exists in the automatic power
control circuit or the optical pick-up.
— MAIN Board — (Side B)
IC601
Q501
IC501
IC502
Laser Diode Checking Methods
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S401 (push switch type).
The following two checking methods for the laser diode are operable.
• Method-1 (In the service mode or normal operation):
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. Push the S401 as shown in Fig. 1.
3. Press the ^ key
4. Check the object lens for confirming normal emission of the
laser diode. If not emitting, there is a trouble in the automatic
power control circuit or the optical pick-up.
During normal operation, the laser diode is turned ON about
2.5 seconds for focus searching.
S401
TP (IOP +)
TP (IOP
digital voltmete
+
–
−
)
Fig. 1 Method to push the S401
– 3 –
Fig. 2 Digital voltmeter connecting location
SECTION 2
GENERAL
This section is extracted from
instruction manual.
– 4 –
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
3-1. CABINET (UPPER) ASSY
2
two claws
2
claw
3
cabinet (upper) assy
2
claw
1
two screws
(2
1
three screws
×
8)
(2
×
8)
2
claw
– 5 –
3-2. LID BLOCK ASSY, UPPER
”
1
spring (lock)
2
spring
(open)
5
shaft
4
Open the “lid block assy, upper”.
3
Push the open button.
7
Pull up the “lid block assy, upper”
to direction of arrow
A
B
.
B
8
Remove the “lid block assy, upper
to direction of arrow C.
C
6
Close the “lid block assy, upper”
to direction of arrow
A
.
– 6 –
SECTION 4
SERVICE MODE (TEST MODE)
• In this set, there are two test modes; CD-DA Test Mode and
VIDEO CD Test Mode.
How to Enter the Test Mode
1. Disconnect exter nal power (no current is applied to the set).
2. Bridge the SOL701 (TEST) on the MAIN Board with a sol-
der. (IC701 (∞ (TEST) pin is shorted to the ground)
3. Connect the external power.
4. The CD-DA Test Mode is activ ated. (LCD display v aries in 5-
ways, and its 5-way display is repeated)
5. Before connecting exter nal power in step 3, if p (POWER
OFF) key was pressed, the mode is switched to VIDEO CD
Test Mode.
(On the LCD, all segments are displayed, and the TV monitor
becomes 100% white)
How to Release the Test Mode
1. Alw ays disconnect external power , and break the solder bridge
of SOL701 (TEST) on the MAIN Board.
2. Thus, the set become ready for normal operation.
Each key Function in Test Mode
1. CD-DA Test Mode
Switches Description
p
(POWER OFF)
^
(PLAY/PAUSE)
g Repeat once more the processing currently
SELECT selected with ^ (PLAY/PAUSE) key.
+
(NEXT)
=
(PREV)
ˆ
(RETURN)
+
MENU Raise K23** by one step after Tracking
–
MENU Lower K23** by one step after Tracking
* Coefficient of Focus Gain
** Coefficient of Tracking Gain
Stop processing
Press once: Initialize, Average Correct
Press twice: Auto Focus
Press 3 times: Focus Auto Gain
Press 4 times: Tracking Auto Gain
Press 5 times: All Servo ON, Mute OFF
Move optical pick-up toward outside track
Move optical pick-up toward inside track
Turn off the Mute
Raise K13* by one step after Focus Auto
Gain
Auto Gain
Lower K13* by one step after Focus Auto
Gain
Auto Gain
2. VIDEO CD Test Mode
Switches Description
p
(POWER OFF)
g Video system reset (return to 100% white
SELECT screen)
– MAIN Board – (Side A)
TV monitor
Go to CD-DA Test Mode
Monitor IN
Video OUT
J901
CN501
CN701
SOL701
(TEST)
Fig. 1 Test terminal location and connecting position
– 7 –
SECTION 5
MAIN board
TP524 (TE)
TP534 (VC)
(see page 10)
+
–
oscilloscope
(DC range)
2200 pF
10 k
Ω
A
ELECTRICAL ADJUSTMENTS
Precautions for Adjustment
1. Before beginning adjustment, set the equipment to service
mode.
After the completion of adjustment, be sure to reset the service mode.
For more information, see “Service Mode (Test Mode)” on
page 7.
2. Perform adjustments in the order given.
3. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise
indicated.
4. Power supply voltage requirement: DC6 V
HOLD switch : OFF
VOLUME control : Minimum
RESUME switch : OFF
Before Beginning Adjustment
Set the equipment to service mode (See page 7) and check the
following. If there is an error, repair the equipment.
• Checking of the sled motor
1. Open the upper lid.
2. Press the ^ key once.
3. Press the + and = keys and check that the optical pickup can move smoothly without sluggishness or abnormal noise
in innermost periphery → outermost periphery → innermost
periphery.
+ : The optical pick-up moves outwardly.
= : The optical pick-up moves inwardly.
• Checking of focus searching
1. Open the upper lid.
2. Press the ^ key thrice. (Focus searching operation is activated continuously.)
3. Check the object lens of the optical pick-up for smooth up/
down motion without sluggishness or abnormal noise.
4. Press the p key.
Check that focus searching operation is deactivated. If not,
again press the p key slightly longer.
Tracking Balance Check
Condition:
• Hold the set in horizontal state.
Connection:
Checking Method:
1. Connect the oscilloscope to TP524 (TE) and TP534 (VC)
on the MAIN board.
2. Set the equipment to service mode stop state. (See page 7)
3. Move the optical pick-up to the center by pressing the +
and = keys.
4. Put the disc (YEDS-18).
5. Press the ^ key.
From focus searching, focus is turned ON while entering CLV drawing-in mode. Tracking and sled are
turned OFF.
6. Confirm that a waveform on the oscilloscope is vertically
symmetric against 0 V.
Note: Take long sweep time
for easy monitoring.
A
0 V
0.7 – 1.1 Vp-p
B
A=B A=B
0 V
7. Stop removing of the disc motor by pressing the p key.
8. After the completion of check, reset service mode. (See
page 7)
B
Connection Location: MAIN board (See page 10)
– 8 –
Focus Bias Check
Condition:
• Hold the set in horizontal state.
Connection:
oscilloscope
(AC range)
MAIN board
TP535 (RFO)
TP534 (VC)
(see page 10)
+
–
Checking Method:
1. Connect the oscilloscope to TP535 (RFO) and TP534
(VC) on the MAIN board.
2. Set the equipment to service mode stop state. (See page
7)
3. Press the ^ key once.
4. Move the optical pick-up to the center by pressing the
+ and = keys.
5. Put the disc (YEDS-18).
6. Press the ^ key four times.
From focus searching, focus is turned ON while entering CL V drawing-in mode. Both tracking and sled
are turned ON.
7. Check the oscilloscope waveform is as shown below.
A good eye pattern means that the diamond shape (≈) in
the center of the waveform can be clearly distinguished.
RF SIGNAL REFERENCE WAVEFORM (EYE PATTERN)
VOLT/DIV: 200 mV (With the 10:1 probe in use)
TIME/DIV: 500 ns
RF level
0.7 – 1.1 Vp-p
T o watch the ey e pattern, set the oscilloscope to AC range
and increase the vertical sensitivity of the oscilloscope
for easy watching.
8. Stop revolving of the disc motor by pressing the p key.
9. After the completion of check, reset service mode. (See
page 7)
Connection Location: MAIN board (See page 10)
– 9 –
Connection Location
– MAIN Board – (Side A)
CN501
CN701
TP534
(VC)
TP524
(TE)
TP535
(RFO)
– 10 –
6-1. BLOCK DIAGRAM
RF 3.3V
A
BC
F
E
DETECTOR
OPTICAL PICK-UP
(DAX-01A2)
LASER DIODE
AUTOMATIC
POWER CONTROL
PD
LD
SPO+
M901
(SPINDLE)
M902
(SLED)
2-AXIS
DEVICE
(FOCUS)
05
(TRACKING)
TRK+
TRK–
FCS+
FCS–
22
M
M
SPO–
24
SLO+
29
SLO–
26
TO+
13
TO–
15
FO+
8
FO–
11
FOCUS/TRACKING ERROR AMP
PD1
3
4
6
7
Q501
SPINDLE
MOTOR DRIVE
SPINDLE/SLED MOTOR DRIVE,
FOCUS/TRACKING COIL DRIVE
IC502
SLED
MOTOR DRIVE
TRACKING
COIL DRIVE
FOCUS
COIL DRIVE
OE
33
CD ON
SWITCHING
Q507
RF
I-V
PD2
AMP
F
F I-V AMP
E
E I-V AMP
13 12
LD
1
SPI
SLI+
SLI–
TI+
TI–
ON :
When the optical pick-up
is inner position.
RF AMP,
IC501
EO
EI
TRACKING
BALANCE SWITCH
Q503, 504
TRV0
TRV1
TRV2
APC LD
AMP
F/R
20
19
31
32
17
18
FI+
6
FI–
5
S910
(LIMIT)
SECTION 6
DIAGRAMS
RF
RFO
SUMMING
AMP
FOCUS
ERROR AMP
FE BIAS
15
TRACKING
ERROR AMP
TRV3
APC PD
AMP
DIGITAL SERVO PROCESSOR
100
2
4
6
8
10
99
17
RFI
18
FE
16
TE
14
LDON
19
PD
2
SPINDLE MOTOR CONTROL
IC602
BUFFER
OUT
1
IC601 (2/2)
SFDR
SRDR
TFDR
TRDR
FFDR
FRDR
SSTP
PWM GENERATOR
FOCUS/TRACKING/SLED
SERVO MICRO
PROGRAM
INTERFACE
ESP RF EQ
CONTROL
SWITCH
Q508, 509
TE
TRACKING
GAIN SWITCH
Q505
COMPARATOR
SERVO DSP
FOCUS/TRACKING/SLED
RF DC AMP
Q506
FE
RF DC
MDS
COUT
89
MDP
5
SW
MIRR, DFCT,
FOK DETECTOR
SERVO AUTO
SEQUENCER
CPU
INTERFACE
DIGITAL SIGNAL PROCESSOR
IC601 (1/2)
RFAC
36
ASYMMETRY
CORRECTOR
ASYI
38
ASYO
39
OVERSAMPLING
NOISE
SHAPER
PROCESSOR
FSW
94
CONT
2
RFDC
26
FE
29
TE
A/D
CONVERTER
FOK
MIRR
DFCT
SENS
DATA
CLOK
XLAT
27
SE
28
93
91
92
80
86
88
87
MIX
18-TIMES
FILTER
CLV
MON
95 96 97
TRV0
TRV1
TRV2
TRV3
MDP
MDS
FILTER
34
31
33
PCO
FILO
DIGITAL PLL
VARI-PITCH
DOUBLE SPEED
SYNC
PROTECTOR
TIMING
GENERATOR 1
DSP-SCOR
ESP-POWER
58
59
TRVCTL
TRV0
63
TRV1
62
TRV2
61
TRV3
60
XLASERCTL
79
DSP-SENS
69 68 70 54 55 57
32
FILI
CLTV
EFM
DEMODULATOR
TIMING
GENERATOR 2
SUBCODE Q
PROCESSOR
SCOR
WFCK
748073 78 77 76 75
DSP-SBQCLK
DSP-SUBQ
DSP-SNSCLK
XAU-RESET
ESS-DATAO
ESS-DATAI
ESS-CLK
SYS XMT RQ
SYS RCV RDY
MPG XMT RQ
DSP-DATA
XDSPLT
XDACLT
DSP-CLK
SQCK
66
65
71
50
91
92
93
88
89
90
XLAT
DATA
CLK
REGISTER
32K
RAM
ADDRESS
GENERATOR
SUBQ
DATAO
DATAI
CLK
CTL0
CTL1
CTL2
PRIORITY
ENCODER
SUBCODE P – W
PROCESSOR
EXCK
SBSO
DATA
BCLK
LRCK
C16M
AU-POWER
CLOCK
GENERATOR
D/A DIGITAL
CORRECTOR
PEAK
6
3
11
8
OFF
ON
HOLD c
PROCESSOR
MUTE
TDMDR
97
TDMCLK
96
98
TDMFS
AUDIOCLK
88
46
AUX1
AUX2
47
66
LCS1 B
AUX7
54
AUX5
53
AUX6
52
HOLD
52
S701
DIGITAL
OUT
SCLK
SWITCHING
IC904
4
1/4
5
1
2/4
2
12
3/4
13
9
4/4
10
ERROR
DETECTOR
DATAO
DATAI
CLK
CTL0
CTL1
CTL2
INTERNAL BUS
EMPH
72 83 79 81
DATA, BCLK, LRCK, C16M
XTAI
VCKI
DATA
BCLK
LRCK
GFS
RFCK
PROCESSOR
C2PO
SERIAL/PARALLEL
DOUT
XRST
RESUME
53
OFF
ON
S702
RESUME
62
20
46
47
45
54
55
BCLK
DATA
56
71
LRCK
C16M
13 – 28 55 – 62
2 – 5, 7 – 10, 31 – 34, 36 – 39
DQ0 – DQ15
S703
(VIDEO SYSTEM)
D-RAM
IC903
NTSC/PAL
43
NTSC
AUTO
MA0 – MA8DBUS0 – DBUS15
16 – 19, 22 – 26
PAL
DATA
BCLK
LRCK
4 – 12
A0 – A8
DATA, BCLK, LRCK
SELECT SWITCH
IC301
IC301
2A
5 7 22
6
11
10
2
3
MPEG AUDIO/VIDEO
DECODER
IC901
29WE13OE27
KEY IN1, KEY IN2
S421, 422,
S441 – 446
2B
3A
3B
1A
1B
99
28
LCAS
40, 41
SEL
1
DCAS B
DRAS B2DWE B3DOE B
14
RAS
UCAS
2Y
3Y
9 23
1Y
4
92
CKO
13
DATA
BCLK
LRCK
24
LD0 – LD7
21 – 23, 25 – 29
O0 – O7
DOOR OPEN
39
SWITCHING
16 15
XTLO
OSC & TIMING
GENERATOR
INPUT
INTERFACE
CIRCUIT
MUTE-O
11
D340
LA0 – LA16
68 – 79, 82 – 86
20 – 13, 3, 2, 31, 1,
12, 4, 5, 11, 10
PROGRAM ROM
IC902
SYSTEM CONTROLLER,
LCD DRIVER, KEY CONTROL
IC701
Q702
SOL702
(DOOR)
(ON: When the CD lid is closed.)
X320
16.9344MHz
XTLI
DIGITAL
FILTER
CIRCUIT
A0 – A16
S401
OPEN
CPU
INTERFACE
SDATA
SHCK
20 19 18
CLK
DATA
S401
∆Σ
MODULATOR
CIRCUIT
DACLT
XLAT
LOE B64LCS3 B
65
32CE30
OE
TEST
95
DIGITAL FILTER,
D/A CONVERTER,
LOW-PASS FILTER
SOL701
(TEST MODE)
LOW-PASS
FILTER
LOW-PASS
FILTER
IC320
RESET B
29
51
XV-RESET
LO
9
RO
5
LINE MUTE
Q101, 201
CONTROL SWITCH
89
AOUT
TBCK
90
ATFS
91
YUV0 – YUV7
HSSCN B
41
40
VSSCN B
AUX3
48
PCLK2XSCN
43
COM1 – COM4
1 – 4
LIQUID CRYSTAL DISPLAY
MUTING
Q340
32 – 39
LCD401
VIDEO
DATA
SEG0 – SEG12
5 – 11, 13 – 18
∑ VOLUME
DATA
BCLK
LRCK
7 – 14
MIFH
1
MIFFL
2
MODE
15
RV301
-1
-2
COLOR BAR
GENERATOR
YDI0 – YCDI7
SEPARATOR
GENERATOR
Y/C
SYNC
CIRCUIT
TMS1
HEADPHONE AMP
LIN
13
RIN
14
MUTE
11
TMS0
44
SOL921
(COLOR BAR)
IC360
PWRSW
12
LOUT
ROUT
REF
BEEP
19
VIDEO ENCODER
Y LEVEL
ALIGNMENT
C LEVEL
ALIGNMENT
OSC1
82
X701
4.19MHz
4
2
3
IC920
VCD 3.3V
OSC0
C SYNC
ADD
C SIGNAL
GENERATOR
ROM
2 PHONES
AUDIO/VIDEO OUT
+
CK27O
42 38 3943
J301
J901
OSC
CIRCUIT
CK27I
X920
27MHz
RESET SIGNAL
GENERATOR
DAC
DAC
DAC
XO
RESET
9481
IC702
VCPU 3.3V
OUT
YOUT
COUT
D-V7000
• SIGNAL PATH
: CD PLAY
: VIDEO
VCPU 3.3V
+3.2V
VIDEO ENCODER
(IC920) B+
COMPARATOR
OSC
B+ SWITCH
Q882
SWITCHING
REGULATOR
Q881
SWITCHING
REGULATOR
Q822
COMPARATOR
COMPARATOR
OSC
D890
PWM
PWM
PWM
VCD 5V
IN
ERROR
4
AMP
Q810-2
VCD 3.3V
CV
VIDEO AMP
31
IC960
27
29
86
49
A-SELECT
AU-MUTE
REMOTE
CONTROL
RECEIVER
IC401
73
67
BEEP
V-POWER56DCINJACK44DC CHK
38
VCC
REMOTE
XIRCTL
B+ SWITCH
87
VIDEO CD ON
CD ON
Q703
VCPU 3.3V
ACD 3.3V,
RF 3.3V
MOTOR 2.8V
IN2
ERROR
3
AMP
IN1
ERROR
14
AMP
+3.2V
REGULATOR
IC801
+3.2V
REGULATOR
IC921
DC/DC
CONVERTER
Q891, T891
OUTPUT
CIRCUIT
POWER CONTROL
IC820
Q810-1
OUTPUT
CIRCUIT
OUTPUT
CIRCUIT
POWER CONTROL
IC861
DC/DC CONVERTER
CONTROL SWITCH
IC862 (1/2)
4
OUT
1
2
VCC
VOLTAGE
DETECT
IC810
SWITCHING REGULATOR
CONTROL SWITCH
15
14
OUT2
7
OUT1
10
9
VDD
H VCC
9
B+ SWITCH
IC862 (2/2)
11
10
B+ SWITCH
B+ SWITCH
Q801, 802
Q820
Q861
5
3
VCD 5V
DRY BATTERY
1
2
13
12
DC VOLTAGE
DETECT
Q803-2
DC IN
DETECT
Q803-1
D805
SIZE “AA”
(IEC DESIGNATION R6)
4PCS. 6V
J801
DC IN 6V
+
–
– 11 –
– 12 –
– 13 –
– 14 –
– 15 –
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