Kenwood DVF-5020 Service manual
DVD VCD CD PLAYER
70%
AC IN
AV1
AV2
S VIDEO OUT
VIDEO
OUT
AUDIO OUT
L
R
DIGITAL AUDIO OUT
OPTICAL
CENTER
FRONT
SURROUND
SUB
WOOFER
SURROUND
L
R
FRONT
R
R/
L
~
(PCM/BIT STREAM)
COAXIAL
STANDBY
VIRTUAL
SURROUND
OPEN/CLOSE
DVF-5020
SERVICE MANUAL
© 1999-9/B51-5580-00 (K/K) 1355
This manual is available for repair in the Europe markets. In other market, please refer to service
manual (B51-5583-00).
Power button
(K27-2399-08)
Top cover
(A01-3749-08)
Tray top
(A29-1093-08)
Pin jack
(E63-1149-08)
Front cover
(B10-3573-08)
Front panel
(A60-1820-08)
Leg
(J02-1468-08)
Oscillating module
(W02-2735-08)
Pin jack
(E63-1151-08)
Pin jack
(E63-1150-08)
Y/C connector
(E63-1148-08)
In compliance with Federal Regulations, following are reproductions of labels on, or inside the product relating to laser
product safety.
KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock
defeated.
AVOID DIRECT EXPOSURE TO BEAM
ConnectorX2
(E40-8598-08)
Caution : No connection of ground line if disassemble
NOTE : Please use the remote controller
the unit. Please connect the ground line on
rear panel, PCBs, Chassis and some others.
for self-diagnosis and tilt adjustment.
AC inlet
(E40-8593-08)
DVF-5020
(A70-1353-08) (E30-2937-08)
(E30-2938-08) (E30-2365-05)
Remote control unit . . . . . . . . . 1
for remote control unit [size "AA"]
Batteries. . . . . . . . . . . . . . . . . . . . 2 AC cord. . . . . . . . . . . . . . . . . . . .. . 1
Video/audio cable. . . . . . . . . . . . 1 Digital cord. . . . . . . . . . . . . . . . . . . 1
(E30-2945-08)
Audio cable. . . . . . . . . . . . . . . . . . . 2
CONTENTS / ACCESSORIES
Contents
CONTENTS / ACCESSORIES .................................. 2
DISASSEMBLY FOR REPAIR....................................3
BLOCK DIAGRAM....................................................14
CIRCUIT DESCRIPTION..........................................18
ADJUSTMENT..........................................................21
ABBREVIATION........................................................22
VOLTAGE CHART....................................................24
Note: There is different part in this manual as compared with a usual one because we use OEM
factory's data.
Accessories
WIRING DIAGRAM...................................................33
PC BOARD .............................................................. 34
SCHEMATIC DIAGRAM.......................................... 39
EXPLODED VIEW ....................................................64
PARTS LIST..............................................................67
SPECIFICATIONS ......................................Back cover
2
DISASSEMBLY FOR REPAIR
DVF-5020
1. Assembling and Disassembling the Casing and Checking C.B.A.s
1-1 Casing Parts and C.B.A. Positions
1-2 Service Positions
Note
To inspect the loading base unit, position the left side
upward (as viewed from the front).
1-4 Disassembling the Front Panel
1. Release the 3 tabs on the bottom.
2. Release the 2 tabs on the left and right.
3. Release the 2 tabs.
4. Disconnect the 2 flexible cables.
Extension cable (B)x2
Extension cable (A)
1-3 Disassembling the Tray
1. Turn the lever clockwise.
2. Move the tray in the direction of the arrow until it locks.
3. Release the tab locks on the left and right, then pull out
the tray.
1-5 Disassembling the Loading Base Unit
1. Remove the 4 screws.
2. Pull out the loading base unit vertically.
Note
There is a danger of damaging the connectors.
3
DVF-5020
DISASSEMBLY FOR REPAIR
1-6 Checking the Module C.B.A.
1. Remove the 2 screws.
2. Connect the module C.B.A. to the mother C.B.A. with the
extension cables for inspection.
• Extension cable (B)x2
Mother C.B.A. Module C.B.A.
PP24201-PS4201
PP23201-PS3201
2. Release the two tabs on the left and right.
1-8 Checking the Power Supply C.B.A.
1. Remove the 3 screws.
Note
Be sure to initialize the player whenever you replace a
C.B.A. (Refer to page21/4-1 Initializing the DVD Player.)
1-7 Disassembling the Rear Panel,
1. Remove all of the screws connected to the rear panel.
(The number of screws varies according to the model).
2. Carefully pull out the power supply C.B.A.
Note
There is a danger of damaging the connectors.
3. Connect the power supply C.B.A. and the mother C.B.A.
with the extension cable for inspection.
• Extension cable(A) (connects the power supply C.B.A.
PS1101 and the mother C.B.A. PP1101)
Extension cable(A)
4
DISASSEMBLY FOR REPAIR
DVF-5020
1-9 Checking the Mother C.B.A.
1. Remove the 5 screws.
2. Release the 2 tabs.
3. Checked by connecting the module C.B.A. and the mother C.B.A. with the extension cables.
Extension cable (B)x2
Module C.B.A. Mother C.B.A.
PS3201-PP23201
PS4201-PP24201
2. To preserve the quality of the optical pickup replacement
parts during transport and installation, the terminals of
the laser diode are short-circuited. After replacing the
parts, use the proper procedure to return the laser diode
to its original condition. (Refer to page9/2-12 Assembling
the Optical Pickup.)
3. Testers cannot be used to check the laser diode of the
optical pickup. The power supply inside the tester can
easily damage the laser diode.
4. Take care when handling the flexible cable because
excessive force can cause it to break.
5. You cannot adjust the semifixed resistor for laser power
adjustment. Do not turn it.
2-2 Disassembly Procedure
Use the following procedure to replace major parts.
For the assembly procedure, follow the flow chart in reverse.
Extension cable(B)
Extension
cable(B)
Note
Be sure to initialize the player whenever you replace a
C.B.A. (Refer to page21/4-1, Initializing the DVD player.)
2. Assembling and Disassembling the Optical Pickup (Mechanical Parts)
The optical pickup can be damaged by static electricity from
your body. Be sure to take static electricity countermeasures
when working around the optical pickup.
2-1 Handling the Optical Pickup
The optical pickup can be damaged by static electricity
from your body. Be sure to take static electricity countermeasures when working around the optical pickup.
1. The optical pickup is an extremely high-precision mechanism. Do not subject it to strong impact.
5
DVF-5020
DISASSEMBLY FOR REPAIR
2-3 Lubricating the Loading Base Unit
When replacing parts, lubricate the parts maked “xxx” in the diagram
Grease 410-0013-05 Grease EM-30LG
6
Part number Service Tool
DISASSEMBLY FOR REPAIR
DVF-5020
2-4 Static Electricity Countermeasures
The laser diode inside the traverse unit (optical pickup) can
be damaged by static electricity from your body. Be sure to
take static electricity countermeasures when working around
the optical pickup.
2-4-1 Static Electricity Countermeasure Methods
1. Ground yourself
Use an anti-static wrist strap to discharge static electrici-
ty from your body.
2. Ground the workbench
Lay a conductive material (sheet) or steel sheet on the
surface where the traverse unit (optical pickup) is to be
placed, then ground the sheet.
2-5 Disassembling the Clamp Base Unit
Remove the 2 screws.
2-6 Disassembling the Clamper Weight, Clamper
Yoke, Magnet and Clamper
1. Release the tab, and pull out the clamper.
2-4-2 Short-circuit the laser diode
Solder the land in the flexible cable of the optical pickup.
Notes
• Be sure to do this befer disconnecting the flexible cable
of the optical pickup from the module C.B.A.
• Use an anti-static soldering iron to short-circuit and
unshort-circuit laser diode.
(Recommended soldering iron: Hakko with ESD countermeasure)
• After you have finished repairing the laser diode, follow
the correct procedure to remove the solder from the
short-circuit location. (Refer to page5/2. Assembling and
Disassembling the Optical Pickup (Mechanical Parts).)
2. Release the 3 tabs on the clamper.
7
DVF-5020
DISASSEMBLY FOR REPAIR
2-7 Disassembling the Traverse Unit
1. Remove the 3 screws.
Note
Be sure to take static electricitiy countermeasures befer
disconnecting the flexible cable.(Refer to page7/2-4 Static Electricity Countermeasures.)
2. Disconnect the 2 flexible cables.
2-8 Disassembling the Stepping Motor Unit
1. Disconnect the flexible cable.
2. Remove the 2 screws.
Note
Take care when handling the flexible cable because it
can be broken by excessive force.
2-9 Disassembling the Optical Pickup Unit
1. Remove the hook of the FPC holder, then remove the
FPC holder itself.
2. Remove the screw.
3. Release the tab, then remove spring holder 1.
Note
Be sure not to lose the spring.
4. Remove the guide shaft.
Note
Be sure to adjust the optical pickup tilt after replacing the
optical pickup.
(Refer to page10/2-14 Opitcal Pickup Tilt Adjustment.)
8
DISASSEMBLY FOR REPAIR
DVF-5020
2-10 Disassembling the Nut Unit
1. Remove the screw.
Notes
• The nut unit is not part of the optical pickup.
Before replacing the optical pickup, remove the nut unit
for use with the new optical pickup.
• After installation, use screw lock to lock the screw in position.
• When reassembling, use screw lock to lock the screw in
position after attaching it.
2-12 Assembling the Optical Pickup
1. Install the optical pickup.
Note
Take care not ot attach the tilt spring and guide shaft in
the wrong order.
2-11 Disassembling the Sub-Shaft Preload Spring
1. Remove the screw.
Notes
• Handle the sub-shaft preload spring carefully because the
shape of the tip is easily deformed.
• The sub-shaft preload spring is not part of the optical
pickup. Before replacing the optical pickup, remove the
sub-sahft preload spring for use with the new optical
pickup.
• After installation, use screw lock to lock the screw in position.
2. Fit the protruding part of the pickup FPC into the convexpart of the FPC holder to install it.
9
DVF-5020
DISASSEMBLY FOR REPAIR
3. Insert the pickup FPC into connector FP5201 on the module C.B.A.
4. Remove the solder from the pickup FPC's soldered shortcircuit.
2-14 Optical Pickup Tilt Adjustment
5. Adjust the optical pickup tilt after removing the solder.
(Refer to page10/2-14 Optical Pickup Tilt Adjustment.)
2-13 Disassembling the Spindle Motor Unit
1. Remove the three screws.
Note
Be sure to adjust the optical pickup tilt after replacing the
spindle motor unit.
10
DISASSEMBLY FOR REPAIR
DVF-5020
Notes
• Adjustment is generally unnecessary after replacing other
parts of the traverse unit. However, adjust if there is a
noticeable degradation in picture quality.
• Optical adjustments cannot be made inside the optical
pickup.
• Adjustment is generally unnecessary after replacing the
traverse unit.
• Adjustment is generally unnecessary after replacing the
traverse unit.
11
DVF-5020
DISASSEMBLY FOR REPAIR
2-15 Disassembling the Intermediate Chassis
1. Push the stopper downward, then rotate it until it contacts
the Vertical cam.
2. Release the 2 tabs.
2-17 Disassembling the Pulley Gear and Decelera-
tion Gear
1. Remove the screw.
2. Remove the pulley gear.
3. Remove the belt.
4. Remove the deceleration gear.
2-16 Disassembling the Vertical cam and Drive
gear
1. Rotate the Vertical cam until it reaches the contact position.
2. Lift the Vertical cam straight upward to pull it out.
3. Remove the Drive gear.
2-18 Disassembling the Mechanism Loading
C.B.A.
1. Remove the 2 screws.
2. Remove the 2 screws.
3. Release the three tabs.
12
IC4231
CNT
SW
CONVERTER
D/A
AUDIO
27MHz
AUDIO DIGITAL OUT
IC3201
MOTHER C.B.A.
IC3071
IC3061
IC6001
IC2511
IC2501
MECHANISM UNIT
MODULE C.B.A.
CR(R)
CB(B)
Y(G)
S-VIDEO OUT
VIDEO OUT
IC3531
IC4221
IC4211
IC4201
SL
SR
FL
FR
MIXR
MIXL
CONVERTER
D/A
VIDEO
DRIVER
VIDEO
CONVERTER
D/A
AUDIO
CONVERTER
D/A
AUDIO
CONVERTER
D/A
AUDIO
IC3001IC7001IC2001IC5202
(AV DEC)
DECODER
AV
SRAM
16BIT
(ODC)
CONTROLLER
DISC
OPTICAL
SRAM
16BIT
COIL
TRACKING
COIL
FOCUS
MOTOR
STEPPING
CPU
SUB
KEY
REMOCON
LED
OSD
FL
(DSC)
CONTROLLER
SERVO
DIGITAL
IC6302
IC6201
CPU
MAIN
DRAM
4M
16.9MHz
DRIVE
MOTOR
4ch
MOTOR
LOADING
DRIVE
MOTOR
SPINDLE
MOTOR
SPINDLE
(FEP)
PROCESSOR
END
FRONT
UNIT
PICK UP
OPTICAL
OVERALL BLOCK DIAGRAM
DVF-5020
13
14
(0.5sec./DIV.)
CLOSE 2.5Vp-p
IC2501-25(UP),IC2501-27(DOWN)
5.0Vp-p(20usec./div.)
IC2501-24
7.2Vp-p(20usec./div.)
IC2511-11,12,13,14
(0.5sec./DIV.)
OPEN 2.5Vp-p
IC2501-25(UP),IC2501-27(DOWN)
RF SIGNAL
SPINDLE MOTOR DRIVE SIGNAL STEPPING MOTOR DRIVE SIGNAL
TRACKING ERROR SIGNAL
FOCUS ERROR SIGNAL
BRK
FIN
RIN
SS
FGC
FG
EC
ECR
OPIN2-
OPIN1-
OPIN3-
OPIN4-
TRAY CLOSE
TRAY OPEN
BRK
TRAY SET2
TRAY SET1
SS
FGC
FG
EC
ECR
TRV-SW
FOCUS DRIVE
TRAKING DRIVE
TRSDRV-B
TRSDRV-A
X TRON
OFTR
BDO
JIT OUT
LDONA
LDONB
FBAL
FE
TBAL
TE
RDCKP
RDCKN
RDTP
RDTN
VIN4
VIN3
VIN2
VIN1
VIN5
VIN6
STNBY
STD1
SCK
SEN
DAT3
DAT2
DAT1
DAT0
SBI1
SBO1
SBT1
CPUIRQ
CPCEN
CPSEN
OUT2
OUT1
A3
A2
A1
H1+
H1-
H2+
H2-
H3+
H3-
VO2-
VO2+
VO1-
VO1+
VO4+
VO4-
VO3+
VO3-
Q
C
D
OPTICAL PICK UP UNIT
PHOTO DETECTOR
B3B4
B2B1
A3A2A4
A1
LASER DIODE
AMP
HEAD
Q5201
LD DRIVE
4
3
IC6303
(EEPROM)
AMP
112
113
114
115
71
76
50
60
52
72
70
55
2
6
5
IC6201
(CPU)
IC7001
(ODC)
INTERFACE
BALANCE
FOCUS
BALANCE
TRACKING
22
21
20
19
97
96
95
94
92
91
2
3
2
1
9
23
66
65
64
12
13
28
50
49
48
47
(FEP)
IC5202
61
63
62
60
38
37
36
35
34
33
128
107
44
81
98
93
20
91
40
41
42
43
1
7
8
13
12
16
14
111
120
121
11
103
102
105
104
23
26
9
2
3
4
5
6
7
16
11
10
15
12
19
18
25
27
23
26
28
11
12
13
14
15
16
17
18
6
3
(DSC)
IC2001
QR2502
5
4
1
3
AMP
QR2503
QR2501
AMP
5
4
1
3
AMP
(MOTOR DRIVE)
(SPINDLE MOTOR DRIVE)
IC2501
IC2511
M2601
LOAD M-
LOAD M+
MOTOR
LOADING
S2601
TRAY OPEN
TRAY CLOSE
M3
M2
M1
H1-
HALL1
H1+
H2-
H2+
HALL2
H3+
H3-
TRV-SW
HALL3
TRAVERSE SWITCH
ACT T-
ACT T+
ACT F-
ACT F+
STEPPING MOTOR UNIT
STEPPING MOTOR
LOADING MOTOR UNIT
SPINDLE MOTOR UNIT
OPTICAL PICK UP UNIT
ACTUATOR
COIL
TRACKING
COIL
FOCUS
DVF-5020
SERVO BLOCK DIAGRAM
VIDEO SIGNAL
MODEL
EXCEPT EUROPE
Q3503
AMP
QR6311
1.2Vp-p(20usec./div)
PS3801-19 PLAY
1.2Vp-p(20usec./div)
PS3801-18 PLAY
1.0Vp-p(20usec./div)
PS3801-17 PLAY
IC3813
H
L
H
L
H
L
H
L
L
H
H
L
H
L
H
H
L
L
SCART C.B.A.
V-OUT
GREEN-I/O
V-OUT
BLUE-I/O
7
11
15
19
19
RED-I/O
RGB
H
IC3831
IC3831
IC3841
IC3841
IC3841
J3871-
IC3821
J3871-
J3871-
J3881-
J3871-
V
C
Y
R
G
B
H
RGB
J3881-
IC3812
J3871-
YC
J3881-
YC
IC3811
RGB
IC3822
IC3822
YC
IC3822
IC3821
J3881
YC
J3881
IC3821
20
H
H
15
H
20
H
11
7
H
1.2Vp-p(20usec./div.)
IC3201-24
2.2Vp-p(20usec./div.)
IC3531-19
2.2Vp-p(20usec./div.)
IC3531-16
1.5Vp-p(20usec./div.)
IC3201-25
1.2Vp-p(20usec./div.)
IC3531-14
0.64Vp-p(20usec./div.)
IC3201-33
0.68Vp-p(20usec./div.)
IC3201-29
6.0Vp-p(20usec./div.)
IC3001-148*155
MODULE C.B.A. MOTHER C.B.A.
(AV DECORDER)
IC3001
XRST
13
IC6201-79PIN
FROM
NRST
XRESET
44
Q3211
AMP
AMP
Q3201
FL3501
B.P.F.
L.P.F.
FL3511
Q3501
AMP
AMP
Q3511
Q3502
AMP
AMP
Q3512
VR3511
VR3501
C ADJ.
Y ADJ.
Q3601
AMP
Q3602
AMP
QR3601
NR
IC6201-80PIN
FROM
AMP
Q3513
AMP
Q3603
VIDEO OUT
(VIDEO DRIVER)
IC3531
14
16
19
COUT
VOUT
C
YOUT
3Y
11
VD7
VD0
155
154
153
152
151
150
149
148
(VIDEO D/A CONVERTER)
IC3201
IC6201-10PIN
FROM
SDATA
IC6201-9PIN
FROM
SCLOCK
P7
P0
SDATA
SCLOCK
21
20
9
8
7
6
5
4
3
2
CB/B ADJ
VR3201
CR/R
CB/B
Y/G
C
Y
DAC-C
DAC-B
DAC-A
DAC-F
DAC-E
38
29
33
35
24
25
ONLY
EUROPE MODEL
AMP
Q3221
AMP
Q3231
AMP
Q3241
FL3561
FL3551
B.P.F.
AMP
Q3571
AMP
Q3561
Q3551
AMP
JAPAN MODEL ONLY
QR3521 QR3522
WIDE1
IC6201-53PIN
FROM
IC6201-5PIN
FROM
WIDE2
S-VIDEO OUT
15
VIDEO BLOCK DIAGRAM
DVF-5020
AMP
AMP
AMP
AMP
AMP
AMP
AMP
AMP
AMP
AUDIO SIGNAL
Rch OUT
Lch OUT
A MUT
IC6201-3PIN
FROM
2
IC4301
1
7
IC4301
6
NRST
IC6201-79PIN
FROM
SBO1
IC6201-72PIN
FROM
SBT1
IC6201-70PIN
FROM
MIXR
STBDAC
MIXL
13
16
IC6201-59PIN
FROM
(AUDIO D/A CONVERTER)
IC4201
28272622
1
3
2
6
IC4362
7
0.7Vp-p(0.5msec./div.)
0.6Vp-p(0.5msec./div.)
IC4211-13,16
6.4Vp-p(10usec./div.)
IC3001-117
T4761
3
IC4781
OPTICAL
DIGITAL AUDIO OUT
COAXIAL
DIGITAL AUDIO OUT
JK4771
6
4
3
1
IC4751
3
5
IC4751
7
2
IEC OUT
110
SW OUT
CNT OUT
SR OUT
SL OUT
FR OUT
FL OUT
IC6201-3PIN
FROM
A MUT
A MUT
IC6201-3PIN
FROM
IC6201-3PIN
FROM
A MUT
1
IC4321
2
6
IC4361
7
1
IC4361
3
6
IC4341
7
1
IC4341
2
7
IC4321
6
NRST
IC6201-79PIN
FROM
SBO1
IC6201-72PIN
FROM
SBT1
IC6201-70PIN
FROM
SW
STBDAC
CNT
13
16
IC6201-59PIN
FROM
(AUDIO D/A CONVERTER)
IC4231
28272622
1
3
2
AOUT2
119
NRST
IC6201-79PIN
FROM
SBO1
IC6201-72PIN
FROM
SBT1
IC6201-70PIN
FROM
SR
STBDAC
SL
13
16
IC6201-59PIN
FROM
(AUDIO D/A CONVERTER)
IC4221
28272622
1
3
2
NRST
IC6201-79PIN
FROM
SBO1
IC6201-72PIN
FROM
SBT1
IC6201-70PIN
FROM
IC6201-59PIN
FROM
STBDAC
FR
FL
13
16
(AUDIO D/A CONVERTER)
IC4211
28272622
1
3
2
AOUT1
118
114
LRCK
SRCK
115
IC3001
AOUT0
117
16
DVF-5020
AUDIO BLOCK DIAGRAM
DVF-5020
CIRCUIT DESCRIPTION
1. Optical Pickup Self-Diagnosis and Replacement Procedure
The optical pickup self-diagnosis function and tilt adjustment check function have been newly added to this player. When
repairing, use the following procedure for effective Self-diagnosis and tilt adjustment.
Be sure to use the self-diagnosis function before replacing the optical pickup when "NO DISC" is displayed. As a guideline, you
should replace the optical pickup when the value of the laser drive current is more than 50.
Note
Press the power button to turn on the power, and check the value before the unit warms up (within three minutes).
17
DVF-5020
CIRCUIT DESCRIPTION
2. Self-Diagnosis Function and Service Modes
2-1 Service Mode Table
The service modes can be activated by pressing various button combinations on the player and remote control unit.
Player Remote control
buttons unit buttons
0 Displaying the UHF display F_ _ _ Refer to page19/2-2 Self-
5 Jitter check, Tilt adjustment Refer to page10/2-14
PAUSE 6 Checking the region numbers and broadcast system
+ 7 Checking the program version Check the IC6302
OPEN/CLOSE FLASH ROM program.
9 Lighting Confirmation Fanction of Display Tube
ON SCREEN Checking the laser drive current Refer to page18/1.
PAUSE Writing the laser drive current value after replacing
the optical pickup (do not use for anything other than
optical pickup replacement)
PAUSE Initializing the DVD player Refer to page21/4-1
4 (restoring factory preset settings) Initializing the DVD Player
OPEN/CLOSE *Use when replaceing a microprocessor, microprocessor
peripheral parts, or C.B.A.
Application Note
Diagnosis Function (UHF
Display).
Optical Pickup Tilt
Adjustment.
Optical Pickup
Self-Diagnosis and
Replacement Procedure.
2-2 Self-Diagnosis Function (UHF Display)
This unit incorporates a convenient self-diagnosis function for use in troubleshooting.
Display method Display Diagnosis Checkpoints
Service numbers U11 Focus error IC2001,IC2511,IC5201,pickup
displayed H01 Tray loading error IC2001, IC2511, loading motor
during use H02 Spindle servo error Spindle motor, IC2501, IC2001
H03 Traverse error Stepping motor, IC2511, IC2001
H04 Tracking servo error IC2001, IC2501, IC5201, pickup, disc
H05 Seek error Stepping motor, IC2511, IC2001
H06 Power supply error IC1021, IC1121, IC1151, IC6001
Press the "0" button
on the remote control
unit while pressing
the "PAUSE" and
"OPEN/CLOSE"
button on the player.
F0** Disc format error
F1** Disc code error
F2** Decoder LSI error
F3** SDRAM error
F4** IIC BUS error
F5** DSC
F6** ECC error
F7** Microprocessor error
F8** Microprocessor error
If this type of error occurs, refer to
page20/2-4 Examples of Repairs Using
Error Codes.
2-3 Self-Diagnosis Display Function
18
CIRCUIT DESCRIPTION
2-4 Examples of Repairs Using Error Codes
Refer to this section when carrying out repairs.
Error display Malfunction example
F0** Disc, IC7001
F103 Disc, IC7001
F4FF IC6001
F500 Optical pickup, IC2001, IC5201, IC2511, IC2501
F501 IC2001, IC6201
F502 IC2501, IC2511, IC2001, IC5202
F504 IC5202, IC2001
F505 Disc, IC2501, IC2511, IC5202, IC2001
F506 Disc, Optical pickup, IC2001
F600 Disc, IC7001, IC5202, IC2001
F601 Disc, IC7001
F602 Disc, IC5202, IC2001
F603 Disc, IC5202, IC2001
F610 IC7001
F611 IC7001, IC5202, IC2001
F612 IC7001, IC15202, IC2001
F620 Laser drive circuit
F621 Laser drive circuit
F700 IC6201
F701 IC6201
F702 IC6201
F880 IC6201
F890 IC6201
F891 IC6201
F8A0 IC6201
F893 IC6302
F894 IC6303
DVF-5020
2-5 Sales Demonstration Lock Function
This function prevents discs from being lost when the unit is used for sales demonstrations, by disabling the disc eject function.
"LOCKED" is displayed on the unit, and ordinary operation is disabled.
2-5-1 Setting Method
The sales demonstration lock function is set by simultaneously pressing the "POWER" button of DVD Player on the remote
control unit and the "STOP" button on the main unit. ("LOCKED" is displayed when the lock function is engaged.)
2-5-2 Release Method
The function can be released using the same procedure as for setting. If the remote control unit is not at hand, the function can
be released by using the same method as for player initialization (pressing the "PAUSE," "4" and "OPEN/CLOSE" buttons
simultaneously).
19
DVF-5020
CIRCUIT DESCRIPTION
3. Service Tools and Equipment
3-1 Service Tools and Equipment Table
Application Name Number
General DVD disc (Include the color bar 75%)
Tilt adjustment Hex wrench (ø1.27mm)
Inspection Extension cables (power supply C.B.A. to mother C.B.A.) Extension cable(A)
Extension cable (module C.B.A. to mother C.B.A.) Extension cable(B)
Others Screw lock
Grease 410-0013-05
Confirmation CD disc
VCD disc
Electrical adjustment Oscilloscope
Probe
AV cable
TV monitor
General General tools (Screw driver. etc)
Static electricity countermeasures Soldering iron (with ESD countermeasure)
Anti-static wrist strap
Conductive material (conductive sheet)
DVD disc (Include 75% color bar)
3-2 Storing and Handling DVD Discs
Surface precision is vital for DVD discs. Be sure to store and handle them carefully.
1. Do not place discs directly onto the workbench, etc., after use.
2. Handle discs carefully in order to maintain their flatness.
Place them into their case after use and store them vertically. Store discs in a cool place where they are not exposed to
direct sunlight or air from air conditioners.
3. Accurate adjustment will not be possible if the disc is warped from being placed on a surface made of glass, etc. If this
happens, use a new test disc to make optical adjustments.
4. If adjustment is done using a warped disc, the adjustment will be incorrect and some discs will not be playable.
4. Service Precautions
4-1 Initializing the DVD Player
Initialize the DVD player whenever you replace a microprocessor, microprocessor peripheral parts, module C.B.A or mother
C.B.A.
4-1-1 Precautions
The customer settings will return to factory preset settings when the player is initialized. Make a note of the settings and reset
them after initializing.
When resetting, see the Initial Settings in the Operating Instructions.
4-1-2 Initialization Method
The player will be initialized (return to the factory preset condition) when you press the "PAUSE", "4" and "OPEN/CLOSE"
buttons simultaneously. When the DVD player is initialized, "All Clear" appears on screen, it also displays "INITIALIZE".
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