Toshiba Dvr4xsu Owners Manual

							GENERAL SPECIFICATIONS
G-17 InterfaceSwitch Front Power Yes
Play Yes
Eject (VCR) Yes
Stop Yes
Rec / OTR Yes
Open / Close (DVD) Yes
CH + Yes
CH - Yes
FF / Search(>>) Yes
Rew / Search(
						

							DISASSEMBLY INSTRUCTIONS
B1-1 D-VR4XSU/D-VR4XSC
1.
1-1:
REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
TOP CABINET AND FRONT CABINET
(Refer to Fig. 1-1)
1.
2.
3.
4.
5.Remove the 5 screws 1.
Remove the Top Cabinet in the direction of arrow (A).
Disconnect the following connectors:
(CP652, CP654, CP655).
Unlock the 8 supports 2.
Remove the Front Cabinet in the direction of arrow (B).
Fig. 1-1
1
1
1 1
(A)
2(B)
1
Top Cabinet
Front Cabinet
2 2
2
2
2
Fig. 1-3
(A)
Flap (B) (C)
2
2
2
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11 .
12.
13.Remove the 6 screws 1.
Disconnect the following connectors:
(CP504, CP1701, CP8301,CP8302, CP8303).
Remove the Deck CD Block in the direction of arrow (A).
Remove the 2 screws 2.
Remove the Deck Shield in the direction of arrow (B).
Remove the 4 screws 3.
Remove the MPEG Shield in the direction of arrow (C).
Disconnect the following connector: (CP4005).
Remove the DVD/HD MPEG PCB in the direction of
arrow (D).
Remove the 2 screws 4.
Remove the DVD Angle (L) in the direction of arrow (E).
Remove the 2 screws 5.
Remove the DVD Angle (R) in the direction of arrow (F). 1-4: DECK CD AND DVD/HD MPEG PCB (Refer to Fig. 1-4)
Fig. 1-4
(B)
1
Deck Shield
11 1
1
Deck CD
(A)
3
31
355
DVD/HD MPEG PCB
(C)
MPEG Shield
DVD Angle  (L)
(D)
DVD Angle  (R)
44
3
(E)
(F)
1-2:
CP654 CP652
OPERATION 1/2 PCB AND DISPLAY PCB
(Refer to Fig. 1-2)
1.
2.Open Flap to 90˚ and flex in direction of arrow (A), at the
same time slide in direction of arrow (B).
Then lift in direction of arrow (C). 1-3: FLAP (Refer to Fig. 1-3) 1.
2.
3.
4.
5.
6.Remove the 7 screws 1.
Remove the Deck Holder (L), PCB Holder and Operation 1
PCB in the direction of arrow (A).
Remove the 4 screws 2.
Remove the Display PCB in the direction of arrow (B).
Remove the 4 screws 3.
Remove the Operation 2 PCB in the direction of arrow (C).
Fig. 1-2
1
1
3
3
Display PCB
1
1
1
1
Deck Holder (L)
Operation 1 PCB
1
PCB Holder
(A)2
2
2
3
(B)2
Operation 2 PCB
(C)3
CP504 CP1701
CP8301 CP8302
CP8303CP4005
CP655
2 
						

							DISASSEMBLY INSTRUCTIONS
B1-2 D-VR4XSU/D-VR4XSC 1-5: POWER PCB (Refer to Fig. 1-5)
1.
2.
3.
4.
5.
6.Remove the 2 screws 1.
Disconnect the following connector: (CP506).
Remove the Fan Motor in the direction of arrow (A).
Remove the 3 screws 2.
Disconnect the following connector: (CP1702).
Remove the Power PCB in the direction of arrow (B).
Fig. 1-5
1-7: VCR PCB (Refer to Fig. 1-7)
1.
2.
3.
4.Remove the screw 1.
Remove the screw 2.
Remove the 7 screws 3.
Remove the VCR PCB in the direction of arrow.
1-6: VCR DECK (Refer to Fig. 1-6)
Do not remove the cable at the FE Head section. The FE
Head may be damaged if you remove the cable by force. NOTE
1.
2.
3.
4.
5.
6.
7.Unlock the 2 supports 1 and remove the Top Holder.
Remove the screw 2.
Remove the FE Head.
Move the Cassette Holder Ass’y to the back side.
Remove the 3 screws 3.
Disconnect the following connectors:
(CP101, CP102, CP3001).
Remove the AC Head Cover and VCR Deck in the
direction of arrow.
1
VCR Deck
FE Head
AC Head Cover
3
1
Top Holder
23
3
1
Power PCB
1
Bottom Plate
Fan Motor(B)
2
(A)
2
2
1
3
VCR PCB
2
Bottom Plate
3
3
3 3
3
3
Fig. 1-7
CP1702CP506
Fig. 1-6
CP101
CP102
CP3001 
						

							DISASSEMBLY INSTRUCTIONS
B2-1 D-VR4XSU/D-VR4XSC
2. REMOVAL OF VCR DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Extend the 2 supports 1.
Slide the 2 supports 2 and remove the Top Bracket. 1.
2.
2-2: CASSETTE HOLDER ASSY (Refer to Fig. 2-2)
Move the Cassette Holder Assy to the front side.
Push the Locker R to remove the Cassette Side R.
Remove the Cassette Side L. 1.
2.
3.
Fig. 2-1
2 2
Main Chassis Main Chassis
Top Bracket
Top Bracket
Main Chassis
Main Chassis
Cassette Side LCassette Side R Locker R
Fig. 2-2
Link Unit
2-3: LINK UNIT (Refer to Fig. 2-3)
Set the Link Unit to the Eject position.
Unlock the support 1.
Remove the (A) side of the Link Unit first, then remove
the (B) side. 1.
2.
3.
Fig. 2-3
(A)
Link UnitMain Chassis
1Link Unit(B)
Main Chassis
1
1
NOTE
1. After installation of the Top Bracket, bend the support 1
so that the Top Bracket is fixed.
2-4: LINK LEVER/FLAP LEVER (Refer to Fig. 2-4)
Extend the support 1.
Remove the Link Lever.
Remove the Flap Lever. 1.
2.
3.
Fig. 2-4
Link Lever
Flap Lever1 
						

							DISASSEMBLY INSTRUCTIONS
B2-2 D-VR4XSU/D-VR4XSC
2-5: LOADING MOTOR/WORM (Refer to Fig. 2-5-A)
1.
2.
3.Remove the screw 1.
Remove the Loading Motor.
Remove the Worm.
Fig. 2-5-A
Loading Motor
Worm
• Screw Torque: 3 ± 0.5kgf•cm Main Chassis
1
NOTE
1.
2.
3.In case of the Worm installation, check if the value of the
Fig. 2-5-B is correct.
In case of the Loading Motor installation, hook the wire on
the Cassette Opener as shown Fig. 2-5-C.
When installing the wires between Capstan DD Unit and
Loading Motor, connect them correctly as shown Fig. 2-5-D.
Fig. 2-5-B
19.2 ± 0.1mm
Safety surface for pressing
of the insert.
2-6: TENSION ASS’Y (Refer to Fig. 2-6-B)
1.
2.
3.
4.
5.
6.Turn the Pinch Roller Cam clockwise so that the Tension
Holder hook is set to the position of Fig. 2-6-A to move
the Tension Arm Ass’y.
Remove the Tension Spring.
Unlock the 2 supports 1 and remove the Tension Band.
Unlock the support 2 and remove the Tension Arm Ass’y.
Unlock the support 3 and remove the Tension Connect.
Float the hook 4 and turn it clockwise then remove the
Tension Holder.
Fig. 2-5-C
Loading Motor
Cassette Opener
Fig. 2-6-B
Tension Band Tension Connect
Tension Spring
Tension Arm Ass’y
Tension Holder
1
1
3
2
4
NOTE
1.
2.
3.In case of the Tension Band installation, note the direc-
tion of the installation. (Refer to Fig. 2-6-C)
In case of the Tension Band installation, install correctly
as Fig. 2-6-D.
In case of the Tension Connect installation, install as the
circled section of Fig. 2-6-E.
Fig. 2-6-C
Tension Band
Tension Connect
Tension Arm Ass’y
Fig. 2-6-A
Fig. 2-5-D
Pink
Loading Motor
WhiteCapstan DD Unit
L2
L1 -
+ 
						

							DISASSEMBLY INSTRUCTIONS
B2-3 D-VR4XSU/D-VR4XSC
Fig. 2-6-D [OK]
[NG]
Tension Connect
Tension Band
Tension Connect
Tension Band
Fig. 2-6-E
Tension Connect
Main Chassis
2-7: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-7-A)
Remove the T Brake Spring.
Turn the T Brake Arm clockwise and bend the hook
section to remove it.
Unlock the 2 supports 1 and remove the T Brake Band. 1.
2.
3.
Fig. 2-7-A
T Brake Band
Hook section
T Brake Arm
T Brake Spring
1
1
NOTE
1. In case of the T Brake Band installation, install correctly
as Fig. 2-7-B.
Fig. 2-7-B
[OK]
[NG]T Brake Arm
T Brake Band
T Brake Arm
T Brake Band
2-8: S REEL/T REEL/IDLER ARM ASS’Y/IDLER GEAR
(Refer to Fig. 2-8-A)
1.
2.
3.Remove the S Reel and T Reel.
Remove the 2 Polyslider Washers 1.
Remove the Idler Arm Ass’y and Idler Gear.NOTE
1.
2.
3.
4.
5.
6.Take care not to damage the gears of the S Reel and T
Reel.
The Polyslider Washer may on the back of the reel.
Take care not to damage the shaft.
Do not touch section “A” of S Reel and T Reel. (Use
gloves.) (Refer to Fig. 2-8-A) Touching may leave stains
on section A.
When you install the reel, clean the shaft and grease it. (If
you do not grease, noise may be heard in FF/REW
mode.)
After installing the reel, adjust the height of the reel.
(Refer to MECHANICAL ADJUSTMENT)
Fig. 2-8-A
Idler Gear
Idler Arm Ass’y
S Reel
T Reel
(A)
1
1(A)
NOTE
1.
2.In case of the S Reel and T Reel installation, check if the
correct parts are installed. (Refer to Fig. 2-8-B)
In case of the Idler Arm Ass’y installation, install correctly
as Fig. 2-8-C. And also set it so that the section “B” of
Fig. 2-8-A is placed under the Main Chassis tab.
Fig. 2-8-B
Big Hole
(S Reel)Small Hole
(T Reel)
Fig. 2-8-C
[OK]
[NG]
Clutch Gear
Idler Arm Ass’y
Idler Arm Ass’y
Clutch Gear(B) 
						

							DISASSEMBLY INSTRUCTIONS
B2-4 D-VR4XSU/D-VR4XSC
2-9: CASSETTE OPENER/PINCH ROLLER BLOCK/P5
ARM ASS’Y (Refer to Fig. 2-9-A)
1.
2.Unlock the support 1 and remove the Cassette Opener.
Remove the Pinch Roller Block and P5 Arm Ass’y.
Fig. 2-9-A
Cassette Opener1
Pinch Roller Block
P5 Arm Ass’y
Main Chassis
NOTE
1.
2.Do not touch the Pinch Roller. (Use gloves.)
In case of the Pinch Roller Block and the Pinch Roller
Cam installation, install correctly as Fig. 2-9-B.
Fig. 2-9-B
Pinch Roller Block
Can be seen the hole of
the Pinch Roller Cam.
P5 Arm Ass’y
Can be seen the hole of the
Main Cam.
2-10: A/C HEAD (Refer to Fig. 2-10-A)
1.
2.
3.
4.Remove the screw 1.
Remove the A/C Head Base.
Remove the 3 screws 2.
Remove the A/C Head and A/C Head Spring.
NOTE
1.
2.
3.Do not touch the A/C Head. (Use gloves.)
When you install the A/C Head Spring, install as shown in
Fig. 2-10-B.
When you install the A/C Head, tighten the screw (1) first,
then tighten the screw (2), finally tighten the screw (3).
Fig. 2-10-A
(1)2
A/C Head
A/C Head Spring
A/C Head Base
• Screw Torque: 5 ± 0.5kgf•cm (Screw 1)
22
(3)
(2)
1
Fig. 2-10-BSpring Position
2-11: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-11)
Remove the screw 1.
Remove the FE Head. 1.
2.
FE Head
• Screw Torque: 5 ± 0.5kgf•cm
• The FE Head is not installed on the Video Cassette Player.
Fig. 2-11
1
2-12: CYLINDER UNIT ASSY (Refer to Fig. 2-12)
Disconnect the following connector:
(CD2001).
Remove the 3 screws 1.
Remove the Cylinder Unit Assy. 1.
2.
3.
When you install the Cylinder Unit Assy, tighten the
screws from (1) to (3) in order while pulling the Assy
toward the left front direction. NOTE
Fig. 2-12 1.• Screw Torque: 3 ± 0.5kgf•cm
Cylinder Unit Assy
1
1
1(1)(3)
(2)CD2001 
						

							DISASSEMBLY INSTRUCTIONS
B2-5 D-VR4XSU/D-VR4XSC
2-14: MAIN CAM/PINCH ROLLER CAM/JOINT GEAR
(Refer to Fig. 2-14-A)
1.
2.Remove the E-Ring 1, then remove the Main Cam.
Remove the E-Ring 2, then remove the Pinch Roller
Cam and Joint Gear.
Fig. 2-14-A
1
Main Cam
Pinch Roller Cam
Joint Gear
2
NOTE
1. In case of the Pinch Roller Cam and Main Cam installa-
tion, install them as shown in the circled section of Fig. 2-
14-B so that the markers meet. (Refer to Fig. 2-14-B)
And also can be seen the Main Chassis hole through the
Main Cam maker hole.
Fig. 2-14-B
Pinch Roller Cam
Marker
Main Cam
2-15: LOADING GEAR S/T UNIT (Refer to Fig. 2-15-A)
1.
2.Remove the E-Ring 1 and remove the Main Loading
Gear.
Remove the Main Rod, Tension Lever, Loading Arm S
Unit and Loading Arm T Unit.
1
Main Loading Gear
Main Rod
Tension LeverLoading Arm T  Unit
Loading Arm S Unit
Fig. 2-15-A
2-13: CAPSTAN DD UNIT (Refer to Fig. 2-13)
Remove the Capstan Belt.
Remove the screw 1.
Remove the Capstan Holder.
Remove the 3 screws 2.
Remove the Capstan DD Unit. 1.
2.
3.
4.
5.
• Screw Torque: 4 ± 0.5kgf•cmCapstan DD UnitCapstan BeltFig. 2-13
1
2
Capstan Holder
2 2 
						

							DISASSEMBLY INSTRUCTIONS
B2-6 D-VR4XSU/D-VR4XSC
1
Clutch Ass’y
Ring Spring
Clutch Lever Coupling Gear
Coupling Spring
Clutch Gear
NOTE
1. When you install the Loading Arm S Unit, Loading Arm T
Unit and Main Loading Gear, align each marker. (Refer
to Fig. 2-15-B)
Fig. 2-15-B
Marker Main Loading Gear
Loading Arm T Unit Loading Arm S UnitMarker
2-16: CLUTCH ASS’Y/RING SPRING/CLUTCH LEVER/
CLUTCH GEAR (Refer to Fig. 2-16-A)
1.
2.
3.
4.Remove the Polyslider Washer 1.
Remove the Clutch Ass’y and Ring Spring.
Remove the Clutch Lever.
Remove the Coupling Gear, Coupling Spring and Clutch
Gear.
Fig. 2-16-A
NOTE
1. In case of the Clutch Ass’y installation, install it with
inserting the spring of the Clutch Ass’y into the dent of the
Coupling Gear. (Refer to Fig. 2-16-B)
Fig. 2-16-B
Clutch Ass’y
Coupling Gear
2-17:
Remove the P4 Cap.
Unlock the support 1 and remove the Cassette Guide
Post.
Remove the Inclined Base S/T Unit.
Remove the screw 2.
Remove the LED Reflector. 1.
2.
3.
4.
5.
Fig. 2-17-A CASSETTE GUIDE POST/INCLINED BASE S/T
UNIT/P4 CAP/LED REFLECTOR
(Refer to Fig. 2-17-A)
P4 Cap
Cassette Guide Post1
Inclined Base T Unit Inclined Base S Unit
2
LED Reflector
NOTE
1.
2.
3.Do not touch the roller of Guide Roller.
In case of the P4 Cap installation, install it with parallel
for “A” and “B” of Fig. 2-17-B.
In case of the Cassette Guide Post installation, install
correctly as the circled section of Fig. 2-17-C.
Fig. 2-17-B
“A” “B”
P4 Cap
Cassette Opener
[OK]
Cassette Guide Post
[NG]
Cassette Guide Post
Fig. 2-17-C 
						

							DISASSEMBLY INSTRUCTIONS
B3-1 D-VR4XSU/D-VR4XSC
3. REMOVAL AND INSTALLATION OF FLAT
PACKAGE IC
REMOVAL
1. Put Masking Tape (cotton tape) around the Flat Package
IC to protect other parts from any damage.
(Refer to Fig. 3-1.)
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
Fig. 3-1
Masking Tape
(Cotton Tape)IC
2. Heat the IC leads using a blower type IC desoldering
machine. (Refer to Fig. 3-2.)
NOTE
Do not rotate or move the IC back and forth , until IC
can move back and forth easily after desoldering the
leads completely.
Fig. 3-2
Blower type IC
desoldering machine
IC
3. When IC starts moving back and forth easily after
desoldering completely, pickup the corner of the IC using
a tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 3-3.)
NOTE
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC
leads or solder lands under the IC when removing it.
Fig. 3-3
Blower type IC
desoldering machine
Tweezers
IC
4.
5.Peel off the Masking Tape.
Absorb the solder left on the pattern using the Braided
Shield Wire. (Refer to Fig. 3-4.)
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Fig. 3-4
Braided Shield Wire
Soldering Iron
IC pattern