JVC RV-DP200BK User manual

SERVICE MANUAL
POWERED WOOFER CD SYSTEM
No.20937
Apr. 2001
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
RV-DP200BK
RV-DP200BK Area Suffix
B
E
EN
U.K.
Continental Europe
Northern Europe
Contents
Safety Precautions
Important for laser products
Preventing static electricity
Dismantling and assembling
the CD mechanism assembly
Disassembly method
Adjustment method
Flow of functional operation
until TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-2
1-4
1-5
1-6
1-7
1-21
1-25
1-26
1-26
1-27
38
C D TAPE AUX TUNER
PRESET
BAND
MULTI CONTROL
REW STOP FF
TUNING
ONE TOUCH
REC
STANDBY
MID /
TREBLE
SUPER WOOFER
VOLUME VOLUME
MID TREBLE /
OPEN
CLOCK
DOWN UP SET
TIMER TIMER
ON/OFF
SLEEP
PROGRAM
RANDOM
REPEAT
DISPLAY
VOLUME
SUPER WOOFER
VOLUME
RM-SRVDP100E
REMOTE CONTROL
AUX CD TAPE
BAND
FM MODE
TUNER
AUTO
PRESET
REVERSE MODE REW MULTI CONTROL FF
MID /
TREBLE

RV-DP200BK
1-2
1. This design of this product contains special hardware and many circuits and components specially for safety
purposes. For continued protection, no changes should be made to the original design unless authorized in
writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services
should be performed by qualified personnel only.
2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product
should not be made. Any design alterations or additions will void the manufacturer`s warranty and will further
relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.
3. Many electrical and mechanical parts in the products have special safety-related characteristics. These
characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily
be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in the Parts List of Service Manual. Electrical
components having such features are identified by shading on the schematics and by ( ) on the Parts List in
the Service Manual.The use of a substitute replacement which does not have the same safety characteristics
as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or
other hazards.
4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be
separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of
electric shock and fire hazard. When service is required, the original lead routing and dress should be
observed, and it should be confirmed that they have been returned to normal, after re-assembling.
5. Leakage currnet check (Electrical shock hazard testing)
After re-assembling the product, always perform an isolation check on the exposed metal parts of the product
(antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the
product is safe to operate without danger of electrical shock.
Do not use a line isolation transformer during this check.
Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage
current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return
path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).
Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more
sensitivity in the following manner.Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor
between an exposed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to eachexposed metal part,
particularly any exposed metal part having a return path to
the chassis, and meausre the AC voltage across the resistor.
Now, reverse the plug in the AC outlet and repeat each
measurement. voltage measured Any must not exceed 0.75 V
AC (r.m.s.).This corresponds to 0.5 mA AC (r.m.s.).
1.This equipment has been designed and manufactured to meet international safety standards.
2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
3. Repairs must be made in accordance with the relevant safety standards.
4. It is essential that safety critical components are replaced by approved parts.
5. If mains voltage selector is provided, check setting for local voltage.
Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE
!
Burrs formed during molding may
be left over on some parts of the
chassis. Therefore, pay attention to
such burrs in the case of
preforming repair of this system.
In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the
parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " "
mark nearby are critical for safety.
When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer.
(Except the JC version)

RV-DP200BK
1-3
1. Service should be performed by qualified personnel only.
2.This equipment has been designed and manufactured to meet international safety standards.
3. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
4. Repairs must be made in accordance with the relevant safety standards.
5. It is essential that safety critical components are replaced by approved parts.
6. If mains voltage selector is provided, check setting for local voltage.
1.This design of this product contains special hardware and many circuits and components specially
for safety purposes. For continued protection, no changes should be made to the original
design unless authorized in writing by the manufacturer. Replacement parts must be identical to
those used in the original circuits.
2. Any unauthorised design alterations or additions will void the manufacturer's guarantee ; furthermore the
manufacturer cannot accept responsibility for personal injury or property damage resulting therefrom.
3. Essential safety critical components are identified by ( ) on the Parts List and by shading on the
schematics, and must never be replaced by parts other than those listed in the manual. Please note
however that many electrical and mechanical parts in the product have special safety related
characteristics. These characteristics are often not evident from visual inspection. Parts other than
specified by the manufacturer may not have the same safety characteristics as the recommended
replacement parts shown in the Parts List of the Service Manual and may create shock, fire, or
other hazards.
4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the
like to be separated from live parts, high temperature parts, moving parts and/or sharp edges
for the prevention of electric shock and fire hazard. When service is required, the original lead
routing and dress should be observed, and it should be confirmed that they have been returned
to normal, after re-assembling.
!Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
(U.K only)

RV-DP200BK
1-4
Important for laser products
1.CLASS 1 LASER PRODUCT
2.DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.
4.CAUTION : The compact disc player uses invisible
laserradiation and is equipped with safety switches
whichprevent emission of radiation when the drawer is
open and the safety interlocks have failed or are de
feated. It is dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
VARNING : Osynlig laserstrålning är denna del är öppnad
och spårren är urkopplad. Betrakta ej strålen.
VARO : Avattaessa ja suojalukitus ohitettaessa olet
alttiina näkymättömälle lasersäteilylle.Älä katso
säteeseen.
ADVARSEL : Usynlig laserstråling ved åbning , når
sikkerhedsafbrydere er ude af funktion. Undgå
udsættelse for stråling.
ADVARSEL : Usynlig laserstråling ved åpning,når
sikkerhetsbryteren er avslott. unngå utsettelse
for stråling.
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
DANGER : Invisibie laser radiation
when open and interlock or
defeated.
AVOID DIRECT EXPOSURE TO
BEAM (e)
VARNING : Osynlig laserstrålning är
denna del är öppnad och spårren är
urkopplad. Betrakta ej strålen. (s)
VARO : Avattaessa ja suojalukitus
ohitettaessa olet alttiina
näkymättömälle lasersäteilylle.Älä
katso säteeseen. (d)
ADVARSEL :Usynlig laserstråling
ved åbning , når
sikkerhedsafbrydere er ude af
funktion. Undgå udsættelse for
stråling. (f)
!CAUTION Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
CLASS 1
LASER PRODUCT

RV-DP200BK
1-5
Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.1. Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.
1.1.1. Ground the workbench
1. Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over
it before placing the traverse unit (optical pickup) on it.
1.1.2. Ground yourself
1. Use an anti-static wrist strap to release any static electricity built up in your body.
1.1.3. Handling the optical pickup
1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
2. Do not use a tester to check the condition of the laser diode in the optical pickup.The tester's internal power
source can easily destroy the laser diode.
1.2. Handling the traverse unit (optical pickup)
1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup.For specific
details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse
unit. Be careful not to take too long a time when attaching it to the connector.
3. Handle the flexible cable carefully as it may break when subjected to strong force.
4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it
Conductive material
(conductive sheet) or iron plate
(caption)
Anti-static wrist strap

RV-DP200BK
1-6
Dismantling and assembling the CD mechanism assembly
1. Notice regarding replacement of optical pickup
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing
repairs to the optical pickup or connected devices.
(Refer to the section regarding anti-static measures.)
1. Do not touch the area around the laser diode and actuator.
2. Do not check the laser diode using a tester, as the diode may easily be destroyed.
3. It is recommended that you use a grounded soldering iron when shorting or removing the laser diode.
Recommended soldering iron: HAKKO ESD-compatible product
4. Solder the short-circuit land on the optical pickup unit.
* In accordance with the following steps, solder the short-circuit land properly.
1. Remove the four screws attaching the micon board as shown in Fig1.
(Refer to "Disassembly method", page 2-8.)
2. Raise the micon board as shown in Fig. 2.
3. Prior to disconnecting the card wire from the connector CN601 on the micon board, solder the
short-circuit land on the pickup unit.
4.When reassembling, unsolder the short-circuit land on the pickup unit after connecting the card wire.
Soldering
(Short-circuit land)
CD mechanism
assembly
Micon board
Micon board
Screw
Screw
Fig.1
Fig.2
Screw
Flexible board

RV-DP200BK
1-7
Remove the four screws A attaching the side grille
on the left side of the body. Pull out the side grille
from the body outward.
Remove the side grille on the right side in the same
way.
1.
2.
Disassembly method
<How to disassemble>
<Main Body>
Removing the side grilles ( See Fig.1)
Remove the side grilles.
Remove the two screws on the front of each
speaker.
Remove the mixing unit and the scratch & rhythm
unit on the upper right and left sides of the body.
Remove the ten screws attaching the cabinet on the
back of the body.
The front cabinet comes off.
1)
2)
3)
4)
Replacing the fuses Described at the
end of "Disassembly method".
Removing the cabin
After disassembling the cabinet, remove the CD unit.
Remove the three screws attaching the power
amplifier assembly
(Use an offset screwdriver to remove the screw on
the bottom).
1)
2)
Power amplifier board
Prior to performing the following procedure, remove
the right and left side grilles.
When disassembling without removing the woofer
speaker, remove the two screws B on the front of
each speaker.
Remove the four screws B attaching the woofer
speaker on the left side of the body.
Disconnect the harness from the speaker terminal on
the back of the woofer speaker.
Remove the woofer speaker on the right side in the
same way.
1.
2.
3.
Removing the woofer speakers
(See Fig.2) Fig.1
Fig.2
AA
B
B
Side grille
Woofer speaker
Front side

RV-DP200BK
1-8
Prior to performing the following procedure, remove
the left side grilles.
Remove the four screws C attaching the scratch &
rhythm assembly
Disconnect the harness from connector CN924 of
the scratch & rhythm board on the underside of the
scratch & rhythm assembly.
1.
2.
Removing the scratch & rhythm assembly
(See Fig.3 and 4)
Prior to performing the following procedure, remove
the right side grilles.
Remove the four screws D attaching the mixing
assembly.
Disconnect the harness from connector CN424 on
the mic & guitar volume board and CN923 on the
drum key board on the underside of the mixing
assembly.
1.
2.
Removing the mixing assembly
(See Fig.5 and 6)
Fig.3
Fig.4
C
C
CN924
Fig.5
Fig.6
D
D
CN923 CN424
Scratch & rhythm
assembly
Scratch & rhythm
board
Mixing assembly
Mic & guitar volume board
Drum key board

RV-DP200BK
1-9
Prior to performing the following procedure, remove
the side grilles, the woofer speakers, the scratch &
rhythm assembly and the mixing assembly.
Removing the front cabinet and the rear
cabinet (See Fig.7 and 8)
Remove the ten screws E attaching the rear cabinet
on the back of the body.
Remove the front cabinet and the rear cabinet (The
speaker terminal inside the front cabinet comes off at
the same time).
1.
2.
The front cabinet can be removed on
condition that the front two screws B
attaching the woofer speakers are
removed.
ATTENTION: The front cabinet can be removed on
condition that the front two screws B
attaching the woofer speakers are
removed.
ATTENTION:
When reassembling, make sure that
connector CN193 of the rear cabinet is
connected to the speaker terminal on
the front cabinet.
ATTENTION:
Fig.7
Fig.8
B
E
E
E
Front side
Rear side
Front cabinet
Rear cabinet

RV-DP200BK
1-10
Remove the two screws F attaching the CD unit on
the back of the rear cabinet.
Disconnect the card wires from connector CN916 on
the micom board and CN415 and CN413 on the
main switch board in the lower left part of the CD
unit.
Pull out the CD unit toward the front. The connector
CN417 and CN418 of the micom board in the lower
rear part of the CD unit are disconnected from the
main switch board at the same time.
1.
2.
3.
Prior to performing the following procedure, remove
the front cabinet and the rear cabinet.
Removing the CD unit (See Fig.9 to 12)
Disconnect the card wire from connector CN1 on the
tuner board.
Remove the antenna wire from TP1 on the tuner
board.
Remove the two screws H attaching the tuner board
holder.
Pull out the tuner board toward the front.
1.
2.
3.
4.
Removing the tuner board (See Fig.13)
Disconnect the card wires from connector CN916 on
the micom board and CN415 on the main switch
board in the lower left part of the CD unit.
Remove the four screws G attaching the cassette
mechanism assembly. Detach the cassette
mechanism assembly toward the front.
1.
2.
Removing the cassette mechanism
assembly (See Fig.10 and 11)
<Rear cabinet>
When reassembling, make sure that
connector CN417 and CN418 of the CD
unit are connected to connector CN427
and CN428 on the power aboard
correctly.
CAUTION:
Fig.9
Fig.10
Fig.13
HH
Main switch board
CN415
Micom board
CN916
G
G
CN1
CN413
TP1
Fig.11
Fig.12
F
CD unit
CD unit
Cassette mechanism assembly
CN413
CD unit
Cassette mechanism assembly
CD unit
Cassette mechanism assembly
Tuner board holder Tuner board

RV-DP200BK
1-11
Prior to performing the following procedure, remove
the cassette mechanism.
Remove the two screws I and the cassette
mechanism holder toward the front.
1.
Removing the cassette mechanism
holder (See Fig.14)
Prior to performing the following procedure, remove
the cassette mechanism assembly, the cassette
mechanism holder and the CD unit.
Disconnect the harnesses from connector CN194 on
the AC input board and CN195 on the regulator
board respectively. Release the harness from the
clamp marked a.
Remove the four screws J attaching the power
transformer.
1.
2.
Removing the power transformer
(See Fig.15 and 16)
Prior to performing the following procedure, remove
the cassette mechanism assembly, the cassette
mechanism holder and the CD unit.
Disconnect the harness from connector CN191 on
the AC input board. Release the harness from the
clamps marked a and b.
Disconnect the harness from connector CN193,
CN195 and CN196 on the regulator board.
Pull out the regulator board from the cabinet slot
under the regulator board toward the front.
Remove the screw K attaching the DC input terminal
on the rear cabinet.
1.
2.
3.
4.
Remove the two screws L & L' attaching the rear
support.
Remove the two screws M attaching the battery lid.
1.
2.
Removing the regulator board
(See Fig.15, 16 and 17)
Removing the rear support and battery lid
(See Fig.17 and 18)
Fig.14
Fig.15
Fig.16
Fig.17
Fig.18
II
J
J
K
L
L'
M
DC input terminal
Rear support
Battery lid
CN193 CN196
CN195
AC input board
CN194,CN191 Regulator board
CN195
Cassette mechanism holder
Power transformer
Clamp a
Clamp b
Regulator board
Clamp a
Clamp b

RV-DP200BK
1-12
Prior to performing the following procedure, remove
the cassette mechanism assembly, the cassette
mechanism holder, the CD unit, the power
transformer, the regulator board and the power
amplifier board .
Remove the two screws O attaching the AC jack on
the AC input board.
1.
Removing the AC input board (See Fig.20)
Prior to performing the following procedure, remove
the cassette mechanism assembly, the cassette
mechanism holder and the tuner board holder.
Disconnect the harness from connector CN193 of
the regulator board. Release the harness from the
spacer marked c.
Pull out the battery board 1 toward the front.
Remove the screw Q and pull out the battery board 2
toward the front.
1.
2.
3.
Removing the battery board 1 and the
battery board 2 (See Fig.21)
Prior to performing the following procedure, remove
the cassette mechanism assembly, the cassette
mechanism holder, the CD unit, the power
transformer, the regulator board.
Release the harness from the clamps marked a, b
and the spacer marked c.
Remove the three screws N attaching the power
amplifier board.
1.
2.
Removing the power amplifier board
(See Fig.19)
Fig.20
Fig.21
Q
Regulator board
CN193
CN194
CN191
AC input board
Battery board 2 Battery board 1
O
Fig.19
N CN428
CN427 Power amplifier board
Clamp a
Clamp b Spacer c
Spacer c

RV-DP200BK
1-13
Disconnect the card wire from connector CN411 and
CN412, and the harness from CN401,CN419 and
CN410 of the main switch board on the underside of
the CD unit.
Remove the four screws R attaching the main
switch board and illumination board.
1.
2.
Removing the main switch board and
illumination boad. (See Fig.22)
Prior to performing the following procedure, remove
the main switch board.
CAUTION:
Prior to disconnecting the card wire from
connector CN601 on the micon board, solder the
short-circuit land on the pickup unit.
Disconnecting the card wire extending from the
pickup unit may cause damage to the pickup unit.
When reassembling, unsolder the short-circuit
land on the pickup unit after connecting the card
wire to connector CN601.
Fig.25 shows more detail about the short-circuit
land.
Disconnect the card wires from connector CN601 and
CN911 on the micon board.
Remove the spacer fixing the harnesses marked d.
Remove the four screws S attaching the micon board.
Disconnect the harness from connector CN912 and
CN602 on under side of the micon board respectively.
1.
2.
3.
4.
Removing the micon board (See Fig.23)
Prior to performing the following procedure, remove
the front cabinet, the rear cabinet and the CD unit.
<CD Unit >
Fig.22
Fig.23
S
S
S
d
S
R
R
RR
CN411
CN419 CN410
CN412
CN413
CN415
CN418
CN601 CN412
CN422
CN911
CN912
CN916
CN602
CD unit
Main Switch board
Micon board
CN417
(Disconnect after soldering
the short-circuit land.)
CN401
Illumination board

RV-DP200BK
1-14
Prior to performing the following procedure, remove
the main switch board and the micon board.
Remove the CD door switch board by pushing the
two tabs e inward.
1.
Removing the CD door switch board
(See Fig.24 and 25)
Prior to performing the following procedure, remove
the main switch board and the micon board.
Remove the two screws U attaching the headphone
/ aux board.
1.
Removing the headphone / aux board
(See Fig.25)
Prior to performing the following procedure, remove
the main switch board and the micon board.
Remove the four screws T attaching the CD
mechanism holder on the underside of the CD case.
Remove the CD mechanism holder and the CD
cushion from the CD mechanism assembly
respectively.
1.
2.
Removing the CD mechanism assembly
(See Fig.25)
Prior to performing the following procedure, remove
the main switch board and the micon board.
Extrude the operation panel assembly from the
underside of the CD unit toward the front while
pushing the four hooks f outward.
Pull out the two volume knobs from the operation
panel assembly.
Remove the ten screws V attaching the key switch
board on the reverse side of the operation panel.
1.
Removing the key switch board
(See Fig.26 to 28)
Fig.25
Fig.24
Fig.26
Fig.27
Fig.28
V
VV
V
UU
T
T
CD door switch board
Tabs e
Headphone / Aux board
CD mechanism
assembly
CD door
switch board
Operation panel assembly
Hooks f Hooks f
Operation panel assembly
Volume knob
Volume knob
Key switch board
The short-circuit
land

RV-DP200BK
1-15
Pull out the S & R jogdial knob.
Remove the five screws W attaching the scratch &
rhythm board on the reverse side of the scratch &
rhythm unit.
1.
2.
Removing the scratch & rhithm board
(See Fig.29 and 30)
Pull out the mic knob and the guitar knob. Remove
the covers from the mic jack and the guitar jack.
Remove the four screws X attaching the mic & guitar
volum board and the three screws Y attaching the
bracket on the underside of the mixing unit. Remove
the mic & guitar volum board together with the mic /
guitar jack board.
Disconnect the connector CN951 on the mic & guitar
volum board from the mic / guitar jack board.
Remove the two snap plates attaching the bracket to
the mic / guitar jack board by moving them outward.
Remove the five screws Z attaching the drum key
board.
1.
2.
3.
4.
5.
Removing the mic & guitar volum board /
mic / guitar jack board / drum key board
(See Fig.31 to 35)
Prior to performing the following procedure, remove
the right side grille and the mixing unit.
<Mixing unit>
Prior to performing the following procedure, remove
the left side grille and the scratch & rhythm unit.
<Scratch & rhythm unit>
Fig.29
Fig.31
Fig.30
Fig.32
Fig.35
Fig.33
Fig.34
W
W
Y
XX
Z
Z
CN951
S & R jogdial knob
Scratch & rhythm bosrd
Scratch & rhythm unit
Mic knob
Guitar knob
Cover
Mic & guitar volume board
Brackeet
Mic & guitar volume board
Mic / Guitar jack board
Brackeet
Brackeet
Mic / Guitar jack board
Snap plate Snap plate Drum key board

RV-DP200BK
1-16
Remove the battery cover on the back of the body.
Remove the five screws D attaching the power
amplifier cover on the back of the body.
Replace the fuse F1901 of the AC input board and
F1902 and F1903 of the regulator board on the back
of the body respectively.
1.
2.
3.
Remove the eight screws A attaching the speaker
covers on the inside of the front cabinet.
Remove the eight screws B attaching the right and
left front speakers.
Remove the screw C attaching the speaker terminal.
1.
2.
3.
Removing the front speakers
(See Fig.36 and 37)
Prior to performing the following procedure, remove
the front cabinet and the rear cabinet.
<Front cabinet assembly>
<Replacing a fuse> (See Fig.38 and 39)
It is not necessary to remove the AC input
board and the power amplifier board.
CAUTION:
Fig.36
Fig.37
Fig.38
Fig.39
A
A
B
D
B
B
B
D
D
C
A
A
F1902
F1901
F1903
Speaker cover
Speaker terminal
Speaker terminal
Front speaker
Battery cover Power amplifier cover

RV-DP200BK
1-17
Fig.38
Removing the CD pickup unit
(See Fig.38)
1.
2.
3.
4.
Move the cam gear in the arrow direction "f" .Then, the
CD pickup unit will be moved in the arrow direction "g" .
According to the above step, shift the CD pickup unit to
the center position.
While pressing the stopper retaining the shaft in the
arrow direction "h" , pull out the shaft in the arrow
direction "i".
After dismounting the shaft from the CD pickup unit,
remove the CD pickup unit
g
hi
f
CD Pickup unit
CD loading
mechanism
Shaft
Cam gear
Shaft
Shaft
Stopper Stopper

RV-DP200BK
1-18
<<Cassette mechanism section>>
Removing the playback/recording & eraser
head ( See Figs.1 and 2 )
1.While shifting the trigger arms seen on the right
side of the head mount in the arrow direction,
turn the flywheel R in counterclockwise direction
until the head mount has gone out with a click
(See Fig. 1).
2.When the flywheel R is rotated in counterclockwise
direction, the playback/recording & eraser head
will be turned in counterclockwise direction from the
position in Fig. 2 to that in Fig. 3.
3. At this position, disconnect the flexible P.C. board
(outgoing from the playback/recording & eraser head)
from the connector CN31 on the head amplifier &
mechanism control P.C.board.
4. After dismounting the FPC holder, remove the flexible
P.C. board.
5. Remove the flexible P.C. board from the chassis base.
6. Remove the spring afrom behind the playback/recording
& eraser head.
7. Loosen the reversing azimuth screw retaining the playback
/recording & eraser head.
8.Take out the playback/recording & eraser head from the
front of the head mount.
9.The playback/recoring & eraser head should also be
removed similarly according to Steps 1 ~ 8 above.
Reassembling the playback/recording
& eraser head
1. Reassemble the playback head from the front of the head
mount to the position as shown in Fig.3.
2. Fix the reversing azimuth screw.
3. Set the spring afrom behind the Playback/Recording &
Eraser head.
4. Attach the flexible P.C. board to the chassis base, and fix
it with the FPC holder as shown in Fig.3.
5.The playback/recording & eraser head should also be
reassembled similarly to Step 1 ~ 4 above.
Cassette mechanism
Flywheel R
Trigger armHead mount Fig. 1
Fig. 2
Playback/recording &
eraser head
Flexible
board
Spring a
Trigger arm
Head amplifier & mechanism
control P.C. board Flywheel R
Fig. 3
Playback/recording &
eraser head Reversing azimuth
screw
Head
mount
Flexible
board
Spring "a"
FPC holder Head amplifier &
mechanism control
P.C. board

RV-DP200BK
1-19
Removing the head amplifier & mechanism
control P.C. board (See Fig. 4)
1. Remove the cassette mechanism assembly.
2. After turning over th cassette mechanism assembly,
remove the three screws Aretaining the head
amplifier & mechanism control P.C.board.
3. Disconnect the connector CN32 on the P.C.board
including the connector CN 1 on the reel pulse P.C.
board.
4.When necessary, remove the 4 pin parallel wire
soldered to the main motor.
Removing the main motor assembly
1. Remove the two screws Bretaining the main
motor assembly (See Fig.4, 4a).
2.While raising the main motor, remove the capstan
belt from the motor pulley (See Fig.4a).
Caution 1: Be sure to handle the capstan belt so
carefully that this belt will not be
stained by grease and other foreign
matter.Moreover, this belt should be
hanged while referring to the capstan
belt hanging method in Fig. 5, 6.
Fig. 4a
Main motor
assembly
Capstan belt
Motor
pulley
Fig. 6
Main motor
assembly
Flywheel
Motor pulleyCapstan belt
Fig. 5
Mechanism motor
assembly
Motor
pulley
Capstan
belt
(See Fig. 4~6)
Belt
Main motor
assembly
Head amplifier &
mechanism control
P.C. board
Flexible P.C. board
4pin parallel wire
Main
motor
assembly
Fig. 4
AA
A
B
B

RV-DP200BK
1-20
Removing the flywheel
(See Figs.7 and 8)
1. Remove the head amplifier & mechanism control
P.C. board.
2. Remove the main motor assembly.
3. After turning over the cassette mechanism,
remove the slit washers band cfixing the capstan
shafts R and L, and pull out the flywheel R and L
respectively from behind the cassette mechanism.
Removing the reel pulse P.C. board and solenoid
(See Fig. 9)
1. Remove the five pawls d~hand screw Cretaining the reel pulse
P.C. board.
2. From the surface of the reel pulse P.C.board parts, remove
the two pawls iand jretaining the solenoid.
Flywheel R Flywheel L
Capstan shaft R Capstan shaft L
Slit
washer Slit washer
Fig. 8
i
hd ef
C
g
Flywheel R Flywheel L
Fig. 9
Reel pulse P.C.board
Solenoid
Fig.7
Cb
j