Toshiba MV20P2C User manual

SERVICE MANUAL
COLOR TELEVISION/
VIDEO CASSETTE RECORDER
MV20P2C
FILE NO. 140-200418

SERVICING NOTICES ON CHECKING
6. AVOID AN X-RAY1. KEEP THE NOTICES
As for the places which need special attentions,
they are indicated with the labels or seals on the
cabinet, chassis and parts. Make sure to keep the
indications and notices in the operation manual.
3. USE THE DESIGNATED PARTS
5. TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
In the condition that an explosion-proof cathode-
ray tube is set in this equipment, safety is
secured against implosion. However, when
removing it or serving from backward, it is
dangerous to give a shock. Take enough care to
deal with it.
Safety is secured against an X-ray by consider-
ing about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage pe-
ripheral circuit, use the designated parts and
make sure not modify the circuit.
Repairing except indicates causes rising of high
voltage, and it emits an X-ray from the cathode-
ray tube.
Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER
The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be
found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
HOW TO ORDER PARTS
PERFORM A SAFETY CHECK AFTER
SERVICING
7.
Confirm that the screws, parts and wiring which
were removed in order to service are put in the
original positions, or whether there are the
portions which are deteriorated around the
serviced places serviced or not. Check the
insulation between the antenna terminal or
external metal and the AC cord plug blades.
And be sure the safety of that.
(INSULATION CHECK PROCEDURE)
1.
2.
3.
4.
Unplug the plug from the AC outlet.
Remove the antenna terminal on TV and turn
on the TV.
Insulation resistance between the cord plug
terminals and the eternal exposure metal
[Note 2] should be more than 1M ohm by
using the 500V insulation resistance meter
[Note 1].
If the insulation resistance is less than 1M
ohm, the inspection repair should be
required.
[Note 1]
If you have not the 500V insulation
resistance meter, use a Tester.
[Note 2]
External exposure metal: Antenna terminal
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
The parts in this equipment have the specific
characters of incombustibility and withstand
voltage for safety. Therefore, the part which is
replaced should be used the part which has
the same character.
Especially as to the important parts for safety
which is indicated in the circuit diagram or the
table of parts as a mark, the designated
parts must be used.
4. PUT PARTS AND WIRES IN THE
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING
There are parts which use the insulation
material such as a tube or tape for safety, or
which are assembled in the condition that
these do not contact with the printed board.
The inside wiring is designed not to get closer
to the pyrogenic parts and high voltage parts.
Therefore, put these parts in the original
positions.
A1-1

1.
2.
3.
4.
5.
Remove the VCR block from the main unit.
(Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.)
Remove the screw 1of the Deck Chassis and remove the Loading Motor.
Rotate the Pinch Roller Cam in the direction of the arrow by hand to slacken the Video Tape.
Rotate the Clutch Ass'y either of the directions to wind the Video Tape in the Cassette Case.
Repeat the above step 3~4. Then take out the Video Cassette from the Deck Chassis. Be careful not to
scratch on the tape.
TAPE REMOVAL METHOD AT NO POWER SUPPLY
Pinch Roller Cam
Main Cam Clutch Ass'y
Main Chassis (Front Side)
Loading Motor
Screw 1
Capstan DD Unit
A1-2

TABLE OF CONTENTS
SERVICING NOTICES ON CHECKING.....................................................................................
HOW TO ORDER PARTS ..........................................................................................................
TAPE REMOVAL METHOD AT NO POWER SUPPLY ............................................................
TABLE OF CONTENTS..............................................................................................................
GENERAL SPECIFICATIONS ...................................................................................................
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS............................................
2. REMOVAL OF VCR DECK PARTS ...................................................................................
3. REMOVAL OF ANODE CAP..............................................................................................
4. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ...............................................
KEY TO ABBREVIATIONS ........................................................................................................
SERVICE MODE LIST ................................................................................................................
PREVENTIVE CHECKS AND SERVICE INTERVALS..............................................................
WHEN REPLACING EEPROM (MEMORY) IC ..........................................................................
SERVICING FIXTURES AND TOOLS .......................................................................................
PREPARATION FOR SERVICING.............................................................................................
MECHANICAL ADJUSTMENTS ................................................................................................
ELECTRICAL ADJUSTMENTS..................................................................................................
BLOCK DIAGRAMS
TV ............................................................................................................................................
Y/C/AUDIO/HEAD AMP ..........................................................................................................
MICON/IN/OUT/AV.................................................................................................................
PRINTED CIRCUIT BOARDS
SYSCON/CRT .........................................................................................................................
SCHEMATIC DIAGRAMS
Y/C/AUDIO/HEAD AMP ..........................................................................................................
MICON .....................................................................................................................................
IN/OUT .....................................................................................................................................
AV ............................................................................................................................................
CHROMA/IF.............................................................................................................................
SOUND AMP ...........................................................................................................................
POWER ...................................................................................................................................
DEFLECTION..........................................................................................................................
CRT ..........................................................................................................................................
INTERCONNECTION DIAGRAM ...............................................................................................
WAVEFORMS .............................................................................................................................
MECHANICAL EXPLODED VIEWS...........................................................................................
CHASSIS EXPLODED VIEWS ...................................................................................................
MECHANICAL REPLACEMENT PARTS LIST .........................................................................
CHASSIS REPLACEMENT PARTS LIST..................................................................................
ELECTRICAL REPLACEMENT PARTS LIST...........................................................................
A1-1
A1-1
A1-2
A2-1
A3-1~A3-5
B1-1, B1-2
B2-1~B2-6
B3-1
B4-1, B4-2
C1-1, C1-2
C2-1
C3-1, C3-2
C4-1
D1-1
D1-1
D2-1~D2-4
D3-1~D3-6
E-1, E-2
E-3, E-4
E-5, E-6
F-1~F-4
G-1, G-2
G-3, G-4
G-5, G-6
G-7, G-8
G-9, G-10
G-11, G-12
G-13, G-14
G-15, G-16
G-17, G-18
G-19, G-20
H-1, H-2
I1-1~I1-3
I2-1, I2-2
J1-1
J2-1
J3-1~J3-4
A2-1

GENERAL SPECIFICATIONS
G-1 TV CRT CRT Size / Visual Size 20 inch / 508.0 mmV
System CRT Type Normal
Deflection 90 degree
Magnetic Field BV/BH +0.45G / 0.18G
Color System NTSC
Speaker 2Speaker
Position Front
Size 3 inch
Impedance 8 ohm
Sound Output MAX 0.75W + 0.75 W
10%(Typical) 0.5W + 0.5 W
G-2 VCR System VHS Player / Recorder
System Video System NTSC
Hi-Fi STEREO No
NTSC PB -
Deck DECK OVD-7
Loading System Front
Motor 3
Heads Video Head 2 Head
FM Audio Head No
Audio /Control Mono/Yes
Erase(Full Track Erase) Yes
Tape Rec PAL -
Speed NTSC SP/SLP
Play PAL -
NTSC SP/SLP
Fast Forward / Rewind Time (Approx.) at 25oC FF:4'50"/REW:2'30"
with Cassette T-120
Forward/Reverse NTSC or PAL-M SP/SLP=3x,5x/9x,15x
Picture Search PAL or SECAM -
Frame Advance -
Slow Speed -
G-3 Tuning Broadcasting System US System M
System Tuner and System 1Tuner
Receive CH Destination US(w/CATV)
Tuning System F-Synth
Input Impedance VHF/UHF 75 ohm
CH Coverage 2~69, 4A,A-5~A-1, A~I,
J~W,W+1~W+84
Intermediate Picture(FP) 45.75MHz
Frequency Sound(FS) 41.25MHz
FP-FS 4.5MHz
Preset CH No
Stereo/Dual TV Sound No
Tuner Sound Muting Yes
G-4 Signal Video Signal Input Level 1 V p-p/75 ohm
Output Level -
S/N Ratio (Weighted) 50dB
Horizontal Resolution at SP Mode 220Lines
Audio Signal Input Level -8dBm/50k ohm
Output Level -
S/N Ratio at SP (Weighted) 38dB
Harmonic Distortion at SP(1KHz) Typical 1.5 %
Frequency Response at SP 100Hz - 10kHz
at LP -
at SLP 100Hz - 4kHz
Hi-Fi Audio Signal Dynamic Range : More than -
Frequency Response -
Wow And Flutter : Less than -
Channel Separation : More than -
Harmonic Distortion : Less than -
A3-1

GENERAL SPECIFICATIONS
G-5 Power Power Source AC 120V 60Hz
DC -
Power Consumption at AC 86 W at 120V 60Hz
at DC -
Stand by (at AC) 5 W at 120V 60 Hz
Per Year -
Protector Power Fuse Yes
Safety Circuit Yes
IC Protector(Micro Fuse) No
Dew Sensor No
G-6 Regulation Safety CSA
Radiation IC
X-Radiation HWC
G-7 Temperature Operation +5oC ~ +40oC
Storage -20oC ~ +60oC
G-8 Operating Humidity Less than 80% RH
G-9 On Screen Menu Yes
Display Menu Type Icon
System Setup Yes
Clock Set Yes
On/Off Timer Set Yes
Auto Clock On/Off Yes
Standard Time Yes
Daylight Saving Time Yes
TV Setup Yes
Language Yes
Picture Yes
Audio No
Picture Preference Yes
Channel Setup Yes
TV/CATV Yes
Auto CH Memory Yes
Add/ Delete Yes
V-chip Setup No
Tape Setup Yes
Timer Rec Set Yes
Auto Repeat On/Off Yes
G-CODE(or SHOWVIEW or PLUSCODE)No. Entry No
Clock Yes
CH/AV(Line) Yes
Tape Counter(Linear Counter) Yes
Tape Speed Yes
Sleep Time Yes
Stereo/Audio Output No
Bilingual No
SAP No
Control Volume Yes
Level Bright / Contrast / Sharpness / Color Yes
Tint Yes
Bass/Treble/Balance No
Manual Tracking Yes
Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause/Eject/Tape In (Symbol Mark) Yes
Auto Tracking/Manual Tracking Yes
Caption / Text Yes
Index Yes
Mute Yes
Hi-Fi No
Repeat Yes
Zero Return Yes
DEW No
G-10 OSD Language English French Spanish
G-11 Clock,Timer Calendar 1990/1/1 ~ 2081/12/31
and Timer Timer Events 8 prog/ 1 month
Back-up One Touch Recording Max Time 6 Hours
OTPB Valid Time No
Sleep Timer Max Time 120 min.
Step 10 min.
On/Off Timer Program(On Timer / Off Timer) 1 prog.
Auto Shut Off No Signal 15 min.
No Operation -
Timer Back-up (at Power Off Mode) 5 sec.
A3-2

GENERAL SPECIFICATIONS
G-12 Remote Unit RC-JG
Control Glow in Dark Remocon Yes
Format NEC
Custom Code 40-BFh , 44-BBh
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys 44 Keys
Keys Power Yes
1 Yes
2 Yes
3 Yes
4 Yes
5 Yes
6 Yes
7 Yes
8 Yes
9 Yes
0 Yes
CH Up/↑Yes
CH Down/↓Yes
Volume Up/→Yes
Volume Down/←Yes
Input Select Yes
Play Yes
F.Fwd Yes
Rew Yes
Pause/Still Yes
Stop Yes
Index+ Yes
Index- Yes
T-REC Yes
Rec(T-Rec/OTR) Yes
Rec/OTR Yes
Eject Yes
Counter Reset Yes
Speed Yes
TV Monitor Yes
Quick View(Channel Return) Yes
Program Yes
Slow No
Auto Tracking(Digital Tracking) Yes
Tracking+ Yes
Tracking - Yes
Menu Yes
Enter Yes
Cancel Yes
Call Yes
Closed Caption(TV/Caption/Text) Yes
Sleep Timer Yes
Mute Yes
Zero Return Yes
CM Skip(Skip Search) Yes
Audio Select No
A3-3

GENERAL SPECIFICATIONS
G-13 Features Auto Head Cleaning No
Auto Tracking Yes
HQ (VHS Standard High Quality) Yes
Auto Power On, Auto Play, Auto Rewind, Auto Eject Yes
VIDEO PLUS+(SHOWVIEW,G-CODE) No
Auto Clock Yes
Forward / Reverse Picture Search Yes
One Touch Playback No
Auto CH Memory Yes
Closed Caption Yes
TV Auto Shut off Function Yes
End Call No
Index Search Yes
SQPB No
CATV Yes
CM Skip(30sec x 6 Times) Yes
Comb Filter No
TV Monitor Yes
Program Extend No
Choke Coil No
Energy Star Yes
Dirty Head No
V-chip USA V-chip No
CANADA V-chip No
CM Advance No
Movie Advance No
Zero Return Yes
Power On Memory No
Picture Preference Yes
Auto Setup Yes
Protect of FBT Leak Circuit Yes
G-14 Accessories Owner's Manual Language English/ French
w/Guarantee Card Yes
Remote Control Unit Yes
Battery Yes
UM size x pcs UM-4 x 2 pcs
OEM Brand No
Rod Antenna No
Poles -
Terminal -
W/300 ohm to 75 ohm antenna adapter -
Loop Antenna No
Terminal -
U/V Mixer No
300 ohm to 75 ohm Antenna Adapter Yes
Antenna Change Plug No
DC Car Cord (Center+) No
AC Plug Adapter No
AC Cord No
AV Cord (2Pin-1Pin) No
Guarantee Card No
Registration Card No
ESP Card No
Warning Sheet No
Dew/AHC Caution Sheet No
Quick Set-up Sheet No
Circuit Diagram No
Service Station List No
Important Safeguard No
Sheet Information (Return) No
A3-4

GENERAL SPECIFICATIONS
G-15 Interface Switch Power Yes
Play Yes
Pause/Still No
One Touch Playback No
Channel Up Yes
Channel Down Yes
F.FWD/Cue Yes
Eject/Stop Yes
Main Power SW No
Volume Up Yes
Volume Down Yes
Rew/Rev Yes
Rec/OTR Yes
Input Select No
Indicator Power No
Rec/OTR Yes (Red)
T-Rec Yes (Red)
On Timer No
CS No
Key Light up Rec/OTR No
One Touch Playback No
Play No
Terminals Front Video Input RCA x 1
Audio Input RCA x 1
Other Terminal Head Phone(Stereo & Mono, 3.5mm)
Rear Video Input No
Audio Input No
Video Output No
Audio Output No
Euro Scart No
Diversity No
Ext Speaker No
DC Jack 12V(Center +) No
VHF/UHF Antenna Input F Type
AC Inlet No
G-16 Set Size Approx. W x D x H (mm) 502 x 488.7 x 513
G-17 Weight Net (Approx.) 22.0 kg( 48.5 lbs)
Gross (Approx.) 24.0 kg( 52.9 lbs)
G-18 Carton Master Carton No
Content -
Material -
Dimensions W x D x H(mm) -
Description of Origin -
Gift Box Yes
Material Double/White
Dimensions W x D x H(mm) 594 x 569 x 620
Design As per Buyer's
Description of Origin Yes
Drop Test Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces
Height (cm) 46
Container Stuffing(40' container) 240 Sets
G-19 Material Cabinet Front PS 94V0 DECABROM
Rear PS 94V0 DECABROM
Jack Panel -
PCB Non-Halogen Demand No
Eyelet Demand Yes
G-20 Environment Pb Free Lead-free Solder No
Other No
Cd Free No
A3-5

DISASSEMBLY INSTRUCTIONS
B1-1
1. REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1: BACK CABINET (Refer to Fig. 1-1)
1.
2.
3.
Remove the 7 screws 1.
Remove the AC cord from the AC cord hook 2.
Remove the Back Cabinet in the direction of arrow.
1-2: CRT PCB (Refer to Fig. 1-2)
CAUTION: BEFORE REMOVING THE ANODE CAP,
DISCHARGE ELECTRICITY BECAUSE IT
CONTAINS HIGH VOLTAGE.
BEFORE ATTEMPTING TO REMOVE OR
REPAIR ANY PCB, UNPLUG THE POWER
CORD FROM THE AC SOURCE.
1.
2.
3.
Remove the Anode Cap.
(Refer to REMOVAL OF ANODE CAP)
Disconnect the following connector: (CP801).
Remove the CRT PCB in the direction of arrow.
Fig. 1-1
Front Cabinet
Back Cabinet
CRT PCB
Fig. 1-2
Front Cabinet
1-3: TV/VCR BLOCK (Refer to Fig. 1-3)
Fig. 1-3
1.
2.
3.
4.
Remove the 2 screws 1.
Disconnect the following connectors:
(CP352, CP354, CP401 and CP502).
Unlock the support 2.
Remove the TV/VCR Block in the direction of arrow.
UP TO
RELEASE
TV/VCR Block
Front Cabinet
1-4: DECK SHIELD PLATE (Refer to Fig. 1-4)
1.
2.
3.
Remove the 2 screws 1.
Remove the screw 2.
Remove the Deck Shield Plate in direction of arrow.
Fig. 1-4
TV/VCR Block
Deck Shield Plate
1
1
1
1
1
1
12
2
11
2
1
1

DISASSEMBLY INSTRUCTIONS
B1-2
1-6: SYSCON PCB (Refer to Fig. 1-6)
1.
2. Remove the screw 1. Remove the Syscon PCB in the direction of arrow.
1-5: DECK CHASSIS (Refer to Fig. 1-5)
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.
Remove the screw 1.
Remove the FE Head.
Remove the 3 screws 2.
Disconnect the following connectors:
(CP1001, CP4001 and CP4002).
Remove the Deck Chassis in the direction of arrow.
Fig. 1-5
Deck Chassis
FE Head
Syscon PCB
Fig. 1-6
Deck Holder
Syscon PCB
2
12
2
1

DISASSEMBLY INSTRUCTIONS
B2-1
2. REMOVAL OF VCR DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Extend the 2 supports 1.
Slide the 2 supports 2and remove the Top Bracket.
1.
2.
NOTE
After the installation of the Top Bracket, bend the support
1so that the Top Bracket is fixed.
1.
11
2
2
Top Bracket
Main Chassis
Top Bracket
Main Chassis
Fig. 2-1
1.
2.
3.
2-2: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-2)
Move the Cassette Holder Ass'y to the front side.
Push the Locker R to remove the Cassette Side R.
Remove the Cassette Side L.
Fig. 2-2
Link Unit Main Chassis
Main Chassis
Cassette Side L
Cassette Side R
Locker R
1.
2.
3.
2-3: CASSETTE SIDE L/R (Refer to Fig. 2-3-A)
Remove the Locker Spring.
Unlock the 4 supports 1and then remove the Cassette
Side L/R.
Unlock the support 2and then remove the Locker R.
Locker Spring
Cassette Side L
Cassette Side R
Locker R
Cassette Holder
1
1
1
1
2
2-4: LINK UNIT (Refer to Fig. 2-4)
1.
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.
Fig. 2-4
(A)
Link Unit
Main Chassis
(B)
Link Unit
Main Chassis
Fig. 2-3-A
NOTE
1.
2.
In case of the Locker R installation, check if the one
position of Fig.2-3-B are correctly locked.
When you install the Cassette Side R, be sure to move
the Locker R after installing.
Fig. 2-3-B
Check if this position
is locked.
Cassette Side R
Locker R
2-5: LINK LEVER/FLAP LEVER/BOT COVER
(Refer to Fig. 2-5)
Unlock the support 1.
Remove the BOT Cover.
Extend the support 2.
Remove the Link Lever.
Remove the Flap Lever.
1.
2.
3.
4.
5.
Fig. 2-5
Link Lever
Flap Lever
2
1BOT Cover

DISASSEMBLY INSTRUCTIONS
B2-2
2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A)
1.
2.
3.
Remove the screw 1.
Remove the Loading Motor.
Remove the Worm.
Fig. 2-6-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. 2-6-B is correct.
In case of the Loading Motor installation, hook the wire on
the Cassette Opener as shown Fig. 2-6-C.
When installing the wires between Capstan DD Unit and
Loading Motor, connect them correctly as shown Fig. 2-6-D.
Fig. 2-6-B
19.2 ±0.1mm
Safety surface for pressing
of the insert.
2-7: TENSION ASS’Y (Refer to Fig. 2-7-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. 2-7-A to move
the Tension Arm Ass’y.
Remove the Tension Spring.
Unlock the 2 supports 1and remove the Tension Band.
Unlock the support 2and remove the Tension Arm Ass’y.
Unlock the support 3and remove the Tension Connect.
Float the hook 4and turn it clockwise then remove the
Tension Holder.
Fig. 2-6-C
Loading Motor
Cassette Opener
Fig. 2-7-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. 2-7-C)
In case of the Tension Band installation, install correctly
as Fig. 2-7-D.
In case of the Tension Connect installation, install as the
circled section of Fig. 2-7-E.
Fig. 2-7-C
Tension Band
Tension Connect
Tension Arm Ass’y
Fig. 2-7-A
Fig. 2-6-D
Pink
Loading Motor
White
Capstan DD Unit
L2
L1
-
+

DISASSEMBLY INSTRUCTIONS
B2-3
Fig. 2-7-D
[OK]
[NG]
Tension Connect
Tension Band
Tension Connect Tension Band
Fig. 2-7-E
Tension Connect
Main Chassis
2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A)
Remove the T Brake Spring.
Turn the T BrakeArm clockwise and bend the hook
section to remove it.
Unlock the 2 supports 1and remove the T Brake Band.
1.
2.
3.
Fig. 2-8-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. 2-8-B.
Fig. 2-8-B
[OK]
[NG]
T Brake Arm
T Brake Band
T Brake Arm
T Brake Band
2-9: S REEL/T REEL/IDLER ARM ASS’Y/IDLER GEAR
(Refer to Fig. 2-9-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 be remained on the back of
the reel.
Take care not to damage the shaft.
Do not touch the section “A” of S Reel and T Reel. (Use
gloves.) (Refer to Fig. 2-9-A) Do not adhere the stains
on it.
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. 2-9-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. 2-9-B)
In case of the Idler Arm Ass’y installation, install correctly
as Fig. 2-9-C. And also set it so that the section “B” of
Fig. 2-9-A is placed under the Main Chassis tab.
Fig. 2-9-B
Big Hole
(S Reel) Small Hole (T Reel)
Fig. 2-9-C
[OK]
[NG]
Clutch Gear Idler Arm Ass’y
Idler Arm Ass’y
Clutch Gear
(B)

DISASSEMBLY INSTRUCTIONS
B2-4
2-10: CASSETTE OPENER/PINCH ROLLER BLOCK/P5
ARM ASS’Y (Refer to Fig. 2-10-A)
1.
2. Unlock the support 1and remove the Cassette Opener. Remove the Pinch Roller Block and P5 Arm Ass’y.
Fig. 2-10-A
Cassette Opener
1
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. 2-10-B.
Fig. 2-10-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.
2-11: A/C HEAD (Refer to Fig. 2-11-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. 2-11-B.
When you install the A/C Head, tighten the screw (1) first,
then tighten the screw (2), finally tighten the screw (3).
Fig. 2-11-A
(1)
2
A/C Head
A/C Head Spring
A/C Head Base
• Screw Torque: 5 ±0.5kgf•cm (Screw 1)
2
2
(3)
(2)
1
Fig. 2-11-B
Spring Position
2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12)
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. 2-12
1
2-13: CYLINDER UNIT ASS'Y (Refer to Fig. 2-13)
Disconnect the following connector:
(CD2001)
Remove the 3 screws 1.
Remove the Cylinder Unit Ass'y.
1.
2.
3.
When you install the Cylinder Unit Ass'y, tighten the
screws from (1) to (3) in order while pulling the Ass'y
toward the left front direction.
NOTE
Fig. 2-13
1.
• Screw Torque: 3 ±0.5kgf•cm
Cylinder Unit Ass'y
1
1
1
(1)
(3)
(2)

DISASSEMBLY INSTRUCTIONS
B2-5
2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A)
1.
2.
3.
Remove the Capstan Belt.
Remove the 3 screws 1.
Remove the Capstan DD Unit.
Fig. 2-14-A
Capstan Belt
Capstan DD Unit
• Screw Torque: 4 ±0.5kgf•cm
1
11
2-15: MAIN CAM/PINCH ROLLER CAM/JOINT GEAR
(Refer to Fig. 2-15-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. 2-15-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 the circled section of Fig. 2-15-B so
that the each markers are met. (Refer to Fig. 2-15-B)
And also can be seen the Main Chassis hole through the
Main Cam maker hole.
Fig. 2-15-B
Pinch Roller Cam
Marker
Main Cam
2-16: LOADING GEAR S/T UNIT (Refer to Fig. 2-16-A)
1.
2.
Remove the E-Ring 1and 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 Lever Loading Arm T Unit
Loading Arm S Unit
Fig. 2-16-A
NOTE
1. In case of the Capstan DD Unit installation, apply the
silicon bond (TSE3843-W) on the position Fig. 2-14-B
correctly. (If no silicon bond applied, abnormal noise will
be heard on the deck operation.)
(Refer to Fig. 2-14-B, C)
Fig. 2-14-B
Applied position of
silicon bond
Be careful not to apply the silicon
bond to the Pinch Roller.
Fig. 2-14-C
Silicon Bond
Main Chassis
Capstan DD Unit
Part Name: TSE3843-W
Part No.: Y118011000

DISASSEMBLY INSTRUCTIONS
B2-6
1
Clutch Ass’y
Ring Spring
Clutch Lever
Coupling Gear
Coupling Spring
Clutch Gear
NOTE
1. When you install the Loading Arm S Unit, LoadingArm T
Unit and Main Loading Gear, align each marker. (Refer
to Fig. 2-16-B)
Fig. 2-16-B
Marker
Main Loading Gear
Loading Arm T Unit Loading Arm S Unit
Marker
2-17: CLUTCH ASS’Y/RING SPRING/CLUTCH LEVER/
CLUTCH GEAR (Refer to Fig. 2-17-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. 2-17-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. 2-17-B)
Fig. 2-17-B
Clutch Ass’y
Coupling Gear
2-18:
Remove the P4 Cap.
Unlock the support 1and 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. 2-18-A
CASSETTE GUIDE POST/INCLINED BASE S/T
UNIT/P4 CAP/LED REFLECTOR
(Refer to Fig. 2-18-A)
P4 Cap
Cassette Guide Post
1
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. 2-18-B.
In case of the Cassette Guide Post installation, install
correctly as the circled section of Fig. 2-18-C.
Fig. 2-18-B
“A” “B”
P4 Cap Cassette Opener
[OK]
Cassette Guide Post
[NG]
Cassette Guide Post
Fig. 2-18-C

3. REMOVAL OF ANODE CAP
Read the following NOTED items before starting work.
After turning the power off there might still be a potential
voltage that is very dangerous. When removing the
Anode Cap, make sure to discharge the Anode Cap's
potential voltage.
Do not use pliers to loosen or tighten the Anode Cap
terminal, this may cause the spring to be damaged.
*
*
REMOVAL
1. Follow the steps as follows to discharge the Anode Cap.
(Refer to Fig. 3-1.)
Connect one end of an Alligator Clip to the metal part of a
flat-blade screwdriver and the other end to ground.
While holding the plastic part of the insulated Screwdriver,
touch the support of the Anode with the tip of the
Screwdriver.
A cracking noise will be heard as the voltage is discharged.
Flip up the sides of the Rubber Cap in the direction of the
arrow and remove one side of the support.
(Refer to Fig. 3-2.)
2.
GND on the CRT
Screwdriver
Alligator Clip
Support CRT
GND on the CRT
Rubber Cap
CRT Support
Fig. 3-1
Fig. 3-2
3. After one side is removed, pull in the opposite direction to
remove the other.
NOTE
DISASSEMBLY INSTRUCTIONS
INSTALLATION
1. Clean the spot where the cap was located with a small
amount of alcohol. (Refer to Fig. 3-3.)
NOTE
Confirm that there is no dirt, dust, etc. at the spot where
the cap was located.
2.
3.
Arrange the wire of the Anode Cap and make sure the
wire is not twisted.
Turn over the Rubber Cap. (Refer to Fig. 3-4.)
Fig. 3-4
4. Insert one end of the Anode Support into the anode button,
then the other as shown in Fig. 3-5.
CRT Support Fig. 3-5
5.
6. Confirm that the Support is securely connected. Put on the Rubber Cap without moving any parts.
Location of Anode Cap
Fig. 3-3
Take care not to damage the Rubber Cap.
B3-1

B4-1
DISASSEMBLY INSTRUCTIONS
Masking Tape
(Cotton Tape)
4.
REMOVAL
IC
Put the Masking Tape (cotton tape) around the Flat
Package IC to protect other parts from any damage.
(Refer to Fig. 4-1.)
1.
Fig. 4-1
NOTE
REMOVAL AND INSTALLATION OF FLAT
PACKAGE IC
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.
NOTE
Masking is carried out on all the parts located within 10
mm distance from IC leads.
Blower type IC
desoldering machine
IC
Heat the IC leads using a blower type IC desoldering
machine. (Refer to Fig. 4-2.)
2.
Fig. 4-2
NOTE
Do not add the rotating and the back and forth
directions force on the IC, until IC can move back and
forth easily after desoldering the IC leads completely.
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. 4-3.)
3.
Blower type IC
desoldering
machine
IC Fig. 4-3
Tweezers
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
Shield Wire. (Refer to Fig. 4-4.)
5.
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Braided Shield Wire
Soldering Iron
Fig. 4-4
IC pattern

B4-2
DISASSEMBLY INSTRUCTIONS
Supply soldering
from upper position
to lower position
IC
Supply the solder from the upper position of IC leads
sliding to the lower position of the IC leads.
(Refer to Fig. 4-6.)
2.
Fig. 4-6
Soldering IronSolder
IC
Absorb the solder left on the lead using the Braided Shield
Wire. (Refer to Fig. 4-7.)
3.
Fig. 4-7
Soldering Iron
Braided Shield Wire
NOTE
Do not absorb the solder to excess.
IC
When bridge-soldering between terminals and/or the
soldering amount are not enough, resolder using a Thin-tip
Soldering Iron. (Refer to Fig. 4-8.)
4.
Fig. 4-8
Thin-tip Soldering Iron
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, always be sure to replace the IC in this
case.
Finally, confirm the soldering status on four sides of the IC
using a magnifying glass.
Confirm that no abnormality is found on the soldering
position and installation position of the parts around the IC.
If some abnormality is found, correct by resoldering.
5.
Solder temporarily
Soldering Iron
INSTALLATION
Take care of the polarity of new IC and then install the new
IC fitting on the printed circuit pattern. Then solder each
lead on the diagonal positions of IC temporarily.
(Refer to Fig. 4-5.)
1.
Fig. 4-5
Solder temporarily