Toshiba MV9DL2 Schematic
FILE NO. 140-200118
SERVICE MANUAL
COLOR TELEVISION/
VIDEO CASSETTE RECORDER
MV9DL2
SERVICING NOTICES ON CHECKING
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.
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
3. USE THE DESIGNATED PARTS
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.
5. TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
In the condition that an explosion-proof cathoderay 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.
6. AVOID AN X-RAY1. KEEP THE NOTICES
Safety is secured against an X-ray by considering about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage peripheral 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 cathoderay tube.
PERFORM A SAFETY CHECK AFTER
7.
SERVICING
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.
Unplug the plug from the AC outlet.
2.
Remove the antenna terminal on TV and turn
on the TV.
3.
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].
4.
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
Earphone jack
HOW TO ORDER PARTS
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.
A1-1
TABLE OF CONTENTS
SERVICING NOTICES ON CHECKING.....................................................................................
HOW TO ORDER PARTS ..........................................................................................................
TABLE OF CONTENTS..............................................................................................................
GENERAL SPECIFICATIONS ...................................................................................................
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS............................................
2. REMOVAL OF DECK PARTS ............................................................................................
3. REMOVAL OF ANODE CAP ..............................................................................................
4. REMOVAL OF DEFLECTION YOKE .................................................................................
5. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ...............................................
KEY TO ABBREVIATIONS ........................................................................................................
SERVICE MODE LIST ................................................................................................................
PREVENTIVE CHECKS AND SERVICE INTERVALS..............................................................
NOTE FOR THE REPLACING OF MEMORY IC .......................................................................
SERVICING FIXTURES AND TOOLS .......................................................................................
PREPARATION FOR SERVICING.............................................................................................
MECHANICAL ADJUSTMENTS ................................................................................................
ELECTRICAL ADJUSTMENTS..................................................................................................
BLOCK DIAGRAMS
TV ............................................................................................................................................
Y/C/AUDIO/CCD/HEAD AMP .................................................................................................
MICON/IN/OUT/REGULATOR...............................................................................................
PRINTED CIRCUIT BOARDS
MAIN/CRT................................................................................................................................
SYSCON .................................................................................................................................
SCHEMATIC DIAGRAMS
Y/C/AUDIO/CCD/HEAD AMP .................................................................................................
MICON .....................................................................................................................................
REGULATOR...........................................................................................................................
IN/OUT .....................................................................................................................................
CHROMA .................................................................................................................................
SOUND AMP ...........................................................................................................................
TV 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
A2-1
A3-1~A3-4
B1-1, B1-2
B2-1~B2-5
B3-1
B3-2
B4-1, B4-2
C1-1, C1-2
C2-1
C3-1, C3-2
C4-1
C5-1
C5-2
D1-1~D1-4
D2-1~D2-6
E-1, E-2
E-3, E-4
E-5, E-6
F-1, F-2
F-3~F-6
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
I-1, I-2
I-3, I-4
J1-1
J2-1, J2-2
J3-1~J3-5
A2-1
GENERAL SPECIFICATIONS
J~W,
G-1 TV CRT CRT Size / Visual Size 9 inch / 222.8mmV
G-2 VCR System VHS
G-3 Tuning Broadcasting System US System M
G-4 Signal Video Signal Input Level 1 V p-p/75 ohm
G-5 Power Power Source AC 120V 60Hz
G-6 Regulation Safety UL
G-7 Temperature Operation +5oC ~ +40oC
G-8 Operating Humidity Less then 80% RH
System CRT Type Normal
Color System NTSC
Speaker 1Speaker
Sound Output MAX 1.2 W
System Player / Recorder
Video System NTSC
Hi-Fi STEREO No
NTSC PB Deck DECK OVD-6S
Heads Video Head 2 Head
FM Audio Head No
Audio /Control Mono
Erase(Full Track Erase) Yes
Tape Rec PAL Speed NTSC SP/SLP
Play PAL -
Fast Forward / Rewind Time (Approx.) FF:4'50"/REW:2'30"
Forward/Reverse NTSC or PAL-M SP/SLP=3x,5x/9x,15x
Picture Search
Frame Advance Slow Slow Speed Variable Slow -
System Tuner and System 1Tuner
Receive CH Destination USA/CANADA+CATV
Intermediate Picture(FP) 45.75MHz
Frequency Sound(FS) 41.25MHz
Preset CH
Stereo/Dual TV Sound
Audio Signal Input Level -8dB/50Kohm
Hi-Fi Audio Signal Dynamic Range : More than -
Power Consumption at AC 54 W at 120V 60Hz
Protector Power Fuse Yes
Deflection 90 degree
Magnetic Field BV/BH +0.45G / 0.18G
Position Side
Size 3 Inch
Impedance 8 ohm
10%(Typical) 0.8 W
Loading System Front
Motor 3
NTSC SP/SLP
Cassette at T-120
Tuning System F-Synth
Input Impedance VHF/UHF 75 ohm
CH Coverage
FP-FS 4.5MHz
Output Level 1 V p-p/75 ohm
S/N Ratio (Weighted) 50 dB
Horizontal Resolution at SP Mode 230Lines
Output Level -8dB/ 1Kohm
S/N Ratio at SP 38
Harmonic Distortion (1KHz) 1.5
Frequency Response at SP 100Hz ~10kHz
at LP -
at SLP 100Hz ~4kHz
Wow And Flutter : Less than Channel Separation : More than Harmonic Distortion : Less than -
DC 12V
at DC 48 W at 12 V
Stand by (at AC) 5 W at 120V 60 Hz
Per Year -
Dew Sensor Yes
Radiation FCC
X-Radiation DHHS
Storage -20oC ~ +60oC
2~69, 4A,A-5~A-1, A~I,
W+1~W+84
No
No
A3-1
GENERAL SPECIFICATIONS
G-9 On Screen Menu Yes
G-10 OSD Language English French Spanish
G-11 Clock,Timer Calendar 1990/1/1 ~ 2081/12/31
Display Menu Type Character
G-CODE(or SHOWVIEW or PLUSCODE)No. Entry
Clock Yes
CH/AV Yes
Tape Counter(Linear Counter) Yes
Tape Speed Yes
Sleep Time Yes
Stereo/Audio Output
Control Volume Yes
Level Bright / Contrast / Sharpness/Color Yes
Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause/Eject/Tape In (Symbol Mark)
Auto Tracking/Manual Tracking Yes
Caption / Text Yes
Index
Muting Yes
Hi-Fi
Repeat Yes
Zero Return
DEW Yes
and Timer Timer Events 8 prog/ 1 month
Back-up One Touch Recording Max Time 5 Hours
OTPB Valid Time No
Sleep Timer Max Time 120
On/Off Timer Program(On Tim / Off Tim) 1
Auto Shut Off No Signal 15
Timer Back-up (at Power Off Mode) 5
Timer Rec Set Yes
Channel Setup Yes
TV/CATV Yes
Auto ch Memory Yes
Add/Delete Yes
Guide ch Set
TV Setup Yes
V-chip Set Yes
On/Off Timer Set Yes
Picture Yes
Audio
Sap On/Off
Auto Repeat On/Off Yes
On/Off Timer Set
System Setup Yes
Clock Set Yes (Calendar 12H)
Language Yes
Auto Clock On/Off Yes
Standard Time Yes
Daylight Saving Time Yes
Commercial Advance
Marking On/Off
Blueback On/Off
Playback Auto/Manual
Unmarked Tape
Movie Advance
Go To Movie
Go To Preview
Bilingal
SAP
Tint Yes
Bass/Treble/Balance
Manual Tracking Yes
Yes
OSD Language Setting English
Step 10
No Operation -
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
min.
min.
prog.
min.
sec.
A3-2
GENERAL SPECIFICATIONS
G-12 Remote Unit RC-DQ
Control Glow in Dark Remocon Yes
Format NEC
Custom Code 40-BF/44-BB h
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys 42
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
Rec/OTR Yes (2Key)
Eject Yes
Counter Reset Yes
Speed Yes
Timer Rec Yes(2Key)
TV Monitor
Quick View Yes
Program Yes
Slow
Auto Tracking Yes
Set/Tracking+ Yes
Set/ Tracking - Yes
Menu Yes
Enter Yes
Cancel Yes
Call Yes
TV/Caption/Text Yes
Sleep Timer Yes
Muting Yes
Zero Return Yes
CM Skip Yes
Audio Select
G-13 Features Auto Head Cleaning Yes
Auto Tracking Yes
HQ (VHS Standard High Quality) Yes
Auto Power On, Auto Play, Auto Rewind, Auto Eject Yes
VIDEO PLUS+(SHOWVIEW,G-CODE)
Auto Clock Yes
Forward / Reverse Picture Search Yes
One Touch Playback
Auto CH Memory Yes
Closed Caption Yes
TV Auto Shut off Function Yes
End Call
Index Search
SQPB
CATV Yes
CM Skip(30sec x 6 Times) Yes
Comb Filter
TV Monitor
Program Extend
Choke Coil
Energy Star Yes
Dirty Head
V-chip USA V-chip Yes
CANADA V-chip
CM Advance
Movie Advance
Keys
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
A3-3
GENERAL SPECIFICATIONS
G-14 Accessories Owner's Manual Language English
Remote Control Unit Yes
Rod Antenna Yes
Loop Antenna
U/V Mixer
DC Car Cord (Center+) Yes
Guarantee Card
Warning Sheet
Circuit Diagram
Antenna Change Plug
Service Facility List
Columbia Offer Sheet
Tent Card
Important Safeguard
Dew/AHC Caution Sheet
AC Plug Adapter
Quick Set-up Sheet
Battery Yes
AC Cord
AV Cord (2Pin-1Pin)
Registration Card Yes
ESP Card Yes
300 ohm to 75 ohm Antenna Adapter
G-15 Interface Switch Power Yes
Indicator Power Red
Key Light up Rec/OTR
Terminals Front Video Input RCAx1
Rear Video Input RCAx1
G-16 Set Size Approx. W x D x H (mm) 278 x 306.5 x 311.5
G-17 Weight Net (Approx.) 8.8 kg
w/Guarantee Card Yes
Poles 2pole
Terminal F type
w/300 ohm to 75 ohm Antenna Adapter Yes
Terminal -
UM size x pcs UM4 x 2 pcs
Play Yes
Pause/Still
System Select
One Touch Playback
Channel Up Yes
Channel Down Yes
F.FWD/Cue Yes
Eject/Stop Yes
Main Power SW
Volume Up Yes
Volume Down Yes
Rew/Rev Yes
Rec/OTR Yes
Input Select
Rec/OTR Red
T-Rec Red
On Timer
CS
One Touch Playback
Play
Audio Input RCAx1
Other Terminal Head Phone(Stereo & Mono, 3.5mm) x 2
Audio Input RCAx1
Video Output RCAx1
Audio Output RCAx1
Euro Scart
Diversity
Ext Speaker
DC Jack 12V(Center +) Yes
VHF/UHF Antenna Input
AC Inlet
Gross (Approx.) 10.5 kg
F Type
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
(19.4 lbs)
(23.1 lbs)
A3-4
GENERAL SPECIFICATIONS
G-18 Carton Master Carton
Gift Box Yes
Drop Test Natural Dropping At
Container Stuffing(40' container) 1260
G-19 Cabinet Material Cabinet Front PS 94V0 DECABROM
Content -
Material -
Dimensions W x D x H(mm) -
Description of Origin -
Material Double/White CORRUGATED
Dimensions W x D x H(mm) 338 x 376 x 386
Design As per Buyer's
Description of Origin Yes
1 Corner / 3 Edges / 6 Surfaces
Height (cm) 62
Cabinet Rear PS 94V0 DECABROM
Jack Panel PS 94V0 DECABROM
No
Sets
A3-5
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1: BACK CABINET (Refer to Fig. 1-1)
1.
Remove the 4 screws 1.
2.
Remove the 2 screws 2.
3.
Remove the 2 screws 3 which are used for holding the
Back Cabinet.
4.
Remove the AC cord from the AC cord hook 4.
5.
Remove the Back Cabinet in the direction of arrow.
Front Cabinet
1
1
2
1
3
3
2
1
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.
Remove the Anode Cap.
(Refer to REMOVAL OF ANODE CAP)
2.
Disconnect the following connectors:
(CP801 and CP850).
3.
Remove the CRT PCB in the direction of arrow.
4
Back Cabinet
Fig. 1-1
1-3: TV/VCR BLOCK (Refer to Fig. 1-3)
1.
Remove the 2 screws 1.
2.
Disconnect the following connectors:
(CP353, CP401, CP403 and CP501).
3.
Unlock the support 2.
4.
Remove the TV/VCR Block in the direction of arrow.
Front Cabinet
1
TV/VCR Block
1
UP TO
RELEASE
1-4: MAIN PCB (Refer to Fig. 1-4)
1.
Remove the screw 1.
2.
Remove the Main PCB Holder.
3.
Remove the 2 screws 2.
4.
Remove the screw 3.
5.
Disconnect the following connectors:
(CP502 and CP820).
6.
Remove the Main PCB in the direction of arrow.
Main PCB
Main PCB Holder
1
2
2
3
2
Fig. 1-3
Front Cabinet
CRT PCB
VCR Block
Fig. 1-4
Fig. 1-2
B1-1
DISASSEMBLY INSTRUCTIONS
1-5: DECK SHIELD PLATE (Refer to Fig. 1-5)
1.
Remove the 2 screws 1.
2.
Remove the screw 2.
3.
Remove the Deck Shield Plate in the direction of arrow.
Deck Shield Plate
2
1
1
VCR Block
Fig. 1-5
1-7: JACK PLATE AND SYSCON PCB (Refer to Fig. 1-7)
1.
Remove the screw 1.
2.
Remove the Syscon PCB in the direction of arrow (A).
3.
Remove the 2 screws 2.
4.
Remove the nut 3.
5.
Remove the washer 4.
6.
Unlock the 2 supports 5.
7.
Remove the Jack Plate in the direction of arrow (B).
Jack Plate
2
2
Syscon PCB
5
(B)
1
(A)
3
4
5
1-6: DECK CHASSIS (Refer to Fig. 1-6)
1.
Remove the 3 screws 1.
2.
Remove the 2 screws 2.
3.
Disconnect the following connectors:
(CP1001, CP1002, CP4001, CP4002 and CP4003).
Remove the Deck Chassis and Shield Cover Deck in
4.
the direction of arrow.
2
1
1
1
Deck Chassis
Deck Holder
Fig. 1-7
2
Syscon PCB
Fig. 1-6
B1-2
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Remove the 2 screws 1.
1.
Slide the 2 supports 2 and remove the Top Bracket.
2.
NOTE
When you install the Top Bracket, install the screw (1)
first, then install the screw (2).
(2)
1
Top Bracket
2
Main Chassis
• Screw Torque: 5 ± 0.5kgf•cm
Top Bracket
2
Main Chassis
2-2: FLAP LEVER/TAPE GUIDE R (Refer to Fig. 2-2)
Move the Cassette Holder Ass'y to the back side.
1.
Remove the Polyslider Washer 1.
2.
Remove the Flap Lever.
3.
Unlock the 3 supports 2 and remove the Tape Guide R.
4.
(1)
1
Fig. 2-1
NOTE
When you install the Tape Guide L, install as shown in the
circle of Fig. 2-3-B. (Refer to Fig. 2-3-B)
Tape Guide L
REC Lever
• The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-B
2-4: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-4)
Move the Cassette Holder Ass'y to the front side so that
1.
the Link Ass'y doesn't slip out.
Push the Locker R to remove the Cassette Side R.
2.
Remove the Cassette Side L.
3.
Main Chassis
Cassette Side R
Locker R
Tape Guide R
Flap Lever
2
2
2
Main Chassis
1
Fig. 2-2
2-3: TAPE GUIDE L (Refer to Fig. 2-3-A)
Move the Cassette Holder Ass'y to the back side.
1.
Unlock the 2 supports 1 and remove the Tape Guide L.
2.
Remove the REC Lever. (Recorder only)
3.
REC Lever
Tape Guide L
1
1
• The REC Lever is not installed on the Video Cassette Player.
Main Chassis
Fig. 2-3-A
Link Ass'y
Cassette Side L
Main Chassis
Fig. 2-4
2-5: CASSETTE SIDE L/R (Refer to Fig. 2-5)
Unlock the 4 supports 1 and then remove the Cassette
1.
Side L/R.
Remove the Cassette Earth Spring.
2.
NOTE
1.2.When you install the Cassette Side R, be sure to move
the Locker R after installing.
After the installation of the Cassette Holder, then install
the Cassette Earth Spring.
1
1
Cassette Side R
Cassette Earth Spring
Cassette Holder
Locker R
1
1
Cassette Side L
Fig. 2-5
B2-1
DISASSEMBLY INSTRUCTIONS
2-6: LINK UNIT (Refer to Fig. 2-6)
Set the Link Unit to the Eject position.
1.
Remove the (A) side of the Link Unit first, then remove
2.
the (B) side.
Link Unit
(B)
(A)
Main Chassis
Link Unit
Main Chassis
2-7: LOADING MOTOR ASS'Y (Refer to Fig. 2-7)
Remove the Link Lever.
1.
Remove the screw 1.
2.
Remove the Loading Motor Ass'y.
3.
Loading Motor Ass'y
Fig. 2-6
2-9: TENSION ASS'Y (Refer to Fig. 2-9-B)
Turn the Middle Gear clockwise so that the Tension
1.
Holder hook, is set to the position of Fig. 2-9-A to more
the Tension Arm Ass'y.
Remove the Tension Spring.
2.
Unlock the support 1 and remove the Tension Arm
3.
Ass'y.
Remove the Tension Adjust.
4.
Unlock the 2 supports 2 and remove the Tension Band
5.
Ass'y.
Float the hook 3 and turn it clockwise then remove the
6.
Tension Holder.
Remove the SS Brake Spring.
7.
Remove the SS Arm Brake.
8.
Tension Arm Ass'y
Fig. 2-9-A
Tension Adjust
2
2
Tension Band Ass'y
Main Chassis
1
Link Lever
• Screw Torque: 5 ± 0.5kgf•cm
2-8: SENSOR COVER L3 (Refer to Fig. 2-8)
Unlock the support 1 and remove the Sensor Cover L3.1.
Main Chassis
Sensor Cover L3
1
Fig. 2-7
Fig. 2-8
Tension Spring
SS Brake Spring
SS Arm Brake
1
3
Tension Holder
Tension Arm Ass'y
Inclined S Ass'y
Fig. 2-9-B
NOTE
When you install the Tension Adjust, install as shown in
Fig. 2-9-C. (Refer to Fig. 2-9-C)
Adjust the direction of the Marker to inside.
Fig. 2-9-C
B2-2
DISASSEMBLY INSTRUCTIONS
2-10: T BRAKE ASS'Y (Refer to Fig. 2-10)
Remove the T Brake Spring.
1.
Turn the T Brake Ass'y clockwise and bend the hook
2.
section to remove it.
T Brake Ass'y
Hook section
T Brake Spring
Fig. 2-10
2-11: S REEL/T REEL (Refer to Fig. 2-11)
Remove the S Reel and T Reel.
1.
Remove the 2 Polyslider Washers 1.
2.
NOTE
Take care not to damage the gears of the S Reel and T
1.
Reel.
The Polyslider Washer may be remained on the back of
2.
the reel.
Take care not to damage the shaft.
3.
Do not touch the section "A" of S Reel and T Reel. (Use
4.
gloves.) (Refer to Fig. 2-11) Do not adhere the stains
on it.
When you install the reel, clean the shaft and oil it. (If
5.
you do not oil, noise may be heard in FF/REW mode.)
After installing the reel, adjust the height of the reel.
6.
(Refer to MECHANICAL ADJUSTMENT)
S Reel
(A)
1
T Reel
(A)
1
P5 Spring
P5-3 Arm Ass'y
• Screw Torque: 5 ± 0.5kgf•cm
1
2
Cassette Opener
2
Pinch Roller Block
Pinch Roller Arm Spring
Pinch Roller Lever Ass'y
Main Chassis
Fig. 2-12-A
NOTE
Do not touch the Pinch Roller. (Use gloves.)
1.
When you install the Pinch Roller Block, install as shown
2.
in the circle of Fig. 2-12-B. (Refer to Fig. 2-12-B)
Fig. 2-12-B
2-13: A/C HEAD (Refer to Fig. 2-13-A)
Remove the screw 1.
1.
Remove the A/C Head Base.
2.
Remove the 3 screws 2.
3.
Remove the A/C Head and A/C Head Spring.
4.
NOTE
Do not touch the A/C Head. (Use gloves.)
1.
When you install the A/C Head Spring, install as shown
2.
in Fig. 2-13-B. (Refer to Fig. 2-13-B)
When you install the A/C Head, tighten the screw (1)
3.
first, then tighten the screw (2), finally tighten the screw
(3).
2-12: PINCH ROLLER BLOCK/P5-3 ARM ASS'Y
(Refer to Fig. 2-12-A)
Remove the P5 Spring.
1.
Remove the screw 1.
2.
Unlock the 2 supports 2 and remove the Cassette
3.
Opener.
Remove the Pinch Roller Block, Pinch Roller Arm
4.
Spring, Pinch Roller Lever Ass'y and P5-3 Arm Ass'y.
Fig. 2-11
B2-3
(3)
(1)
2
2
(2)
1
• Screw Torque: 5 ± 0.5kgf•cm (Screw 1)
2
A/C Head
A/C Head Spring
A/C Head Base
Fig. 2-13-A
DISASSEMBLY INSTRUCTIONS
Capstan Belt
Capstan DD Unit
Spring Position
Fig. 2-13-B
2-14: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-14)
Remove the screw 1.
1.
Remove the FE Head.
2.
FE Head
• The FE Head is not installed on the Video Cassette Player.
• Screw Torque: 4 ± 0.5kgf•cm
1
Fig. 2-14
2-15: AHC ASS'Y/CYLINDER UNIT ASS'Y
(Refer to Fig. 2-15)
Unlock the support 1 and remove the AHC Ass'y.
1.
Disconnect the following connector:
2.
(CD2001).
Remove the 3 screws 2.
3.
Remove the Cylinder Unit Ass'y.
4.
NOTE
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.
1
1
1
• Screw Torque: 5 ± 0.5kgf•cm
Fig. 2-16
2-17: MIDDLE GEAR/MAIN CAM (Refer to Fig. 2-17-A)
Remove the Polyslider Washer 1, then remove the
1.
Middle Gear.
Remove the E-Ring, then remove the Main Cam, P5
2.
Cam, Pinch Roller Cam and Joint Gear.
1
Middle Gear
E-Ring
Main Cam
Pinch Roller Cam
Joint Gear
P5 Cam
Fig. 2-17-A
Cylinder Unit Ass'y
2
(2)
• Screw Torque: 3 ± 0.5kgf•cm
(1)
2
2
(3)
1
2-16: CAPSTAN DD UNIT (Refer to Fig. 2-16)
Remove the Capstan Belt.
1.
Remove the 3 screws 1.
2.
Remove the Capstan DD Unit.
3.
AHC Ass'y
Fig. 2-15
NOTE
When you install the Pinch Roller Cam, P5 Cam and Main
Cam, align each marker. (Refer to Fig. 2-17-B)
Pinch Roller Cam
Check the hole of Main
Chassis can be seen.
Marker
Main Cam
P5 Cam
Fig. 2-17-B
B2-4
DISASSEMBLY INSTRUCTIONS
2-18: CLUTCH ASS'Y (Refer to Fig. 2-18)
Remove the Capstan Brake Spring.
1.
Remove the Polyslider Washer 1.
2.
Remove the Clutch Ass'y, Ring Spring and Coupling
3.
Gear.
Unlock the 2 supports 2 and remove the Clutch Lever.
4.
1
Clutch Ass'y
Capstan Brake Spring
Ring Spring
Coupling Gear
Clutch Lever
2
2
Fig. 2-18
2-19: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-19-A)
Remove the E-Ring 1 and remove the Main Loading
1.
Gear.
Slide the Main Rod and remove the Spring Holder.
2.
Remove the Main Rod, Tension Lever, Clutch Actuator,
3.
Idler Arm Ass'y.
Remove the screw 2.
4.
Remove the LED Reflector.
5.
Remove the Loading Arm S Ass'y and Loading Arm T
6.
Ass'y.
Remove the Loading Gear S and Loading Gear T.
7.
Remove the Loading Gear Spring.
8.
Spring Holder
1
Main Loading Gear
Tension Lever
Loading Gear T
Loading Gear
Spring
Loading Arm T Ass'y
Loading Gear S
Loading Gear
Spring
Idler Arm Ass'y
LED Reflector
Clutch Actuator
Main Rod
2
NOTES
1. When you install the Loading Arm S Ass'y, Loading Arm
T Ass'y and Main Loading Gear, align each marker.
(Refer to Fig. 2-19-B)
Marker
Main Loading Gear
Marker
Loading Arm T Ass'y
Loading Arm S Ass'y
Fig. 2-19-B
2. When you install the Clutch Actuator, install as shown in
the circle of Fig. 2-19-C. (Refer to Fig. 2-19-C)
Clutch Actuator
Fig. 2-19-C
2-20: INCLINED S/T ASS'Y (Refer to Fig. 2-20)
Remove the Cap P4.
1.
Remove the screw 1.
2.
Unlock the support 2 and remove the Loading Gear
3.
Holder.
Remove the Inclined S Unit.
4.
Remove the Inclined T Unit.
5.
NOTE
Do not touch the roller of Guide Roller.
1
2
Loading Gear Holder
Inclined Base T
Unit
Inclined Base
S Unit
• Screw Torque: 5 ± 0.5kgf•cm
Loading Arm S Ass'y
Fig. 2-19-A
B2-5
• Screw Torque: 2.5 ± 0.5kgf•cm
Cap P4
Fig. 2-20
DISASSEMBLY INSTRUCTIONS
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
Follow the steps as follows to discharge the Anode Cap.
1.
(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.
GND on the CRT
3. After one side is removed, pull in the opposite direction to
remove the other.
NOTE
Take care not to damage the Rubber Cap.
INSTALLATION
Clean the spot where the cap was located with a small
1.
amount of alcohol. (Refer to Fig. 3-3.)
Location of Anode Cap
Fig. 3-3
NOTE
Confirm that there is no dirt, dust, etc. at the spot where
the cap was located.
Arrange the wire of the Anode Cap and make sure the
2.
wire is not twisted.
Turn over the Rubber Cap. (Refer to Fig. 3-4.)
3.
CRT
Support
Alligator Clip
Screwdriver
GND on the CRT
Fig. 3-1
Flip up the sides of the Rubber Cap in the direction of the
2.
arrow and remove one side of the support.
(Refer to Fig. 3-2.)
Rubber Cap
CRT
Support
Fig. 3-2
Fig. 3-4
4. Insert one end of the Anode Support into the anode button,
then the other as shown in Fig. 3-5.
Support
CRT
Fig. 3-5
5.6.Confirm that the Support is securely connected.
Put on the Rubber Cap without moving any parts.
B3-1
DISASSEMBLY INSTRUCTIONS
4. REMOVAL OF DEFLECTION YOKE
(Refer to Fig. 4-1)
1.
Loosen the screw 1.
2.
Remove the Convergence • Purity Magnet in the
direction of arrow.
3.
Remove the 3 Wedges.
4.
Remove the Deflection Yoke in the direction of arrow.
INSTALLATION
Install new Deflection Yoke in reverse steps of REMOVAL.
NOTE
After adjusting the purity and the convergence, fix the
screw 1 and lock the wedges.
Wedge
Wedge
(A)
Deflection Yoke
1
Convergence •
Purity Magnet
Fig. 4-1
B3-2
DISASSEMBLY INSTRUCTIONS
5.
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
REMOVAL
Put the Masking Tape (cotton tape) around the Flat
1.
Package IC to protect other parts from any damage.
(Refer to Fig. 5-1.)
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
When IC starts moving back and forth easily after
3.
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. 5-3.)
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.
Blower type IC
desoldering
machine
Masking Tape
(Cotton Tape)
Heat the IC leads using a blower type IC desoldering
2.
IC
machine. (Refer to Fig. 5-2.)
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.
Blower type IC
desoldering machine
Fig. 5-1
Tweezers
IC
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
5.
Shield Wire. (Refer to Fig. 5-4.)
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Fig. 5-3
Braided Shield Wire
Soldering Iron
IC
Fig. 5-2
IC pattern
Fig. 5-4
B4-1
DISASSEMBLY INSTRUCTIONS
INSTALLATION
Take care of the polarity of new IC and then install the
1.
new IC fitting on the printed circuit pattern. Then solder
each lead on the diagonal positions of IC temporarily.
(Refer to Fig. 5-5.)
Soldering Iron
Solder temporarily
Supply the solder from the upper position of IC leads
2.
Solder temporarily
sliding to the lower position of the IC leads.
(Refer to Fig. 5-6.)
Fig. 5-5
When bridge-soldering between terminals and/or the
4.
soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 5-8.)
Thin-tip Soldering Iron
IC
Fig. 5-8
Finally, confirm the soldering status on four sides of the
5.
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.
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, be always sure to replace the IC in this
case.
Soldering IronSolder
IC
Absorb the solder left on the lead using the Braided
3.
Supply soldering
from upper position
to lower position
Shield Wire. (Refer to Fig. 5-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
IC
Braided Shield Wire
Fig. 5-6
Fig. 5-7
B4-2
A
A/C
ACC
AE
AFC
AFT
AFT DET
AGC
AMP
ANT
A.PB
APC
ASS'Y
AT
AUTO
A/V
B
BGP
BOT
BPF
BRAKE SOL
BUFF
B/W
C
C
CASE
CAP
CARR
CH
CLK
CLOCK (SY-SE)
COMB
CONV
CPM
CTL
CYL
CYL-M
CYL SENS
D
DATA (SY-CE)
dB
DC
DD Unit
DEMOD
DET
DEV
E
E
EF
EMPH
ENC
ENV
EOT
EQ
EXT
F
F
FBC
FE
FF
FG
FL SW
FM
FSC
FWD
G
GEN
GND
H
H.P.F
KEY TO ABBREVIATIONS
:
Audio/Control
:
Automatic Color Control
:
Audio Erase
:
Automatic Frequency Control
:
Automatic Fine Tuning
:
Automatic Fine Tuning Detect
:
Automatic Gain Control
:
Amplifier
:
Antenna
:
Audio Playback
:
Automatic Phase Control
:
Assembly
:
All Time
:
Automatic
:
Audio/Video
:
Burst Gate Pulse
:
Beginning of Tape
:
Bandpass Filter
:
Brake Solenoid
:
Buffer
:
Black and White
:
Capacitance, Collector
:
Cassette
:
Capstan
:
Carrier
:
Channel
:
Clock
:
Clock (Syscon to Servo)
:
Combination, Comb Filter
:
Converter
:
Capstan Motor
:
Control
:
Cylinder
:
Cylinder-Motor
:
Cylinder-Sensor
:
Data (Syscon to Servo)
:
Decibel
:
Direct Current
:
Direct Drive Motor Unit
:
Demodulator
:
Detector
:
Deviation
:
Emitter
:
Emitter Follower
:
Emphasis
:
Encoder
:
Envelope
:
End of Tape
:
Equalizer
:
External
:
Fuse
:
Feed Back Clamp
:
Full Erase
:
Fast Forward, Flipflop
:
Frequency Generator
:
Front Loading Switch
:
Frequency Modulation
:
Frequency Sub Carrier
:
Forward
:
Generator
:
Ground
:
High Pass Filter
H.SW
Hz
I
IC
IF
IND
INV
K
KIL
L
L
LED
LIMIT AMP
LM, LDM
LP
L.P.F
LUMI.
M
M
MAX
MINI
MIX
MM
MOD
MPX
MS SW
N
NC
NR
O
OSC
OPE
P
PB
PB CTL
PB-C
PB-Y
PCB
P. CON
PD
PG
P-P
R
R
REC
REC-C
REC-Y
REEL BRK
REEL S
REF
REG
REW
REV, RVS
RF
RMC
RY
S
S. CLK
S. COM
S. DATA
SEG
SEL
SENS
SER
SI
SIF
SO
SOL
SP
STB
SW
:
Head Switch
:
Hertz
:
Integrated Circuit
:
Intermediate Frequency
:
Indicator
:
Inverter
:
Killer
:
Left
:
Light Emitting Diode
:
Limiter Amplifier
:
Loading Motor
:
Long Play
:
Low Pass Filter
:
Luminance
:
Motor
:
Maximum
:
Minimum
:
Mixer, mixing
:
Monostable Multivibrator
:
Modulator, Modulation
:
Multiplexer, Multiplex
:
Mecha State Switch
:
Non Connection
:
Noise Reduction
:
Oscillator
:
Operation
:
Playback
:
Playback Control
:
Playback-Chrominance
:
Playback-Luminance
:
Printed Circuit Board
:
Power Control
:
Phase Detector
:
Pulse Generator
:
Peak-to Peak
:
Right
:
Recording
:
Recording-Chrominance
:
Recording-Luminance
:
Reel Brake
:
Reel Sensor
:
Reference
:
Regulated, Regulator
:
Rewind
:
Reverse
:
Radio Frequency
:
Remote Control
:
Relay
:
Serial Clock
:
Sensor Common
:
Serial Data
:
Segment
:
Select, Selector
:
Sensor
:
Search Mode
:
Serial Input
:
Sound Intermediate Frequency
:
Serial Output
:
Solenoid
:
Standard Play
:
Serial Strobe
:
Switch
C1-1
S
SYNC
SYNC SEP
T
TR
TRAC
TRICK PB
TP
U
UNREG
V
V
VCO
VIF
VP
V.PB
VR
V.REC
VSF
VSR
VSS
V-SYNC
VT
X
X'TAL
Y
Y/C
KEY TO ABBREVIATIONS
:
Synchronization
:
Sync Separator, Separation
:
Transistor
:
Tracking
:
Trick Playback
:
Test Point
:
Unregulated
:
Volt
:
Voltage Controlled Oscillator
:
Video Intermediate Frequency
:
Vertical Pulse, Voltage Display
:
Video Playback
:
Variable Resistor
:
Video Recording
:
Visual Search Fast Forward
:
Visual Search Rewind
:
Voltage Super Source
:
Vertical-Synchronization
:
Voltage Tuning
:
Crystal
:
Luminance/Chrominance
C1-2
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