Memorex MVT2137 User manual

SERVICE MANUAL
Design and specifications are subject to change without notice.
MVT2137
COLORTELEVISION/VIDEO CASSETTE RECORDER
ORIGINAL
MFR’S VERSION A

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.
HOWTO 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
Earphone jack
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

A1-2
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

CONTENTS
SERVICING NOTICES ON CHECKING ..................................................................................
HOW TO ORDER PARTS .......................................................................................................
TAPE REMOVAL METHOD AT NO POWER SUPPLY ............................................................
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 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/CCD/HEAD AMP .................................................................................................
MICON/IN/OUT/OPERATION ................................................................................................
PRINTED CIRCUIT BOARDS
OPERATION............................................................................................................................
MAIN/CRT................................................................................................................................
SYSCON .................................................................................................................................
SCHEMATIC DIAGRAMS
Y/C/AUDIO/CCD/HEAD AMP .................................................................................................
MICON .....................................................................................................................................
POWER ...................................................................................................................................
IN/OUT .....................................................................................................................................
CHROMA/IF ............................................................................................................................
SOUND AMP ...........................................................................................................................
HI-FI .........................................................................................................................................
IF ..............................................................................................................................................
TV POWER..............................................................................................................................
DEFLECTION..........................................................................................................................
CRT .........................................................................................................................................
OPERATION ...........................................................................................................................
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~A3-4
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
D1-2
D2-1~D2-4
D3-1~D3-6
E-1, E-2
E-3, E-4
E-5, E-6
F-1, F-2
F-3, F-4
F-5~F-8
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
G-21, G-22
G-23, G-24
G-25, G-26
H-1, H-2
I1-1, I1-2
I2-1, I2-2
J1-1
J2-1
J3-1, J3-3
A2-1

GENERAL SPECIFICATIONS
G-1 TV CRT CRT Size / Visual Size 13 inch / 335.4mmV
System CRT Type Normal
Deflection 90 degree
Magnetic Field BV/BH +0.45G / 0.18G
Color System NTSC
Speaker 1Speaker
Position Front
Size 1.5 x 2.5 Inch
Impedance 8 ohm
Sound Output MAX 1.5 W
10%(Typical) 1.0 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/LP/SLP
Fast Forward / Rewind Time (Approx.) at 25oC FF:4'50"/REW:2'30"
with Cassette at T-120
Forward/Reverse NTSC or PAL-M SP/LP/SLP=3x,5x/7x,9x/9x,15x
Picture Search -
Frame Advance Slow -
Slow Speed Variable Slow -
G-3 Tuning Broadcasting System US Sysytem 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 1 V p-p/75 ohm
S/N Ratio (Weighted) 50 dB
Horizontal Resolution at SP Mode 220Lines
Audio Signal Input Level -8dBm/50Kohm
Output Level -8dBm/1Kohm
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 -
Wow And Flutter : Less than -
Channel Separation : More than -
Harmonic Distortion : Less than -
G-5 Power Power Source AC 120V 60Hz
DC 12V
Power Consumption at AC 65 W at 120V 60Hz
at DC 54W at 12V
Stand by (at AC) 4 W at 120V 60 Hz
Per Year -
Protector Power Fuse Yes
Dew Sensor Yes
G-6 Regulation Safety UL
Radiation FCC
X-Radiation DHHS
G-7 Temperature Operation +
5
o
C
~ +4
0
o
C
Storage -2
0
o
C
~ +
60
o
C
G-8 Operating Humidity Less then 80% RH
G-9 On Screen Menu Yes
Display Menu Type Character
A3-1

GENERAL SPECIFICATIONS
Timer Rec Set Yes
Channel Setup Yes
TV/CATV Yes
Auto ch Memory Yes
Add/Delete Yes
Guide ch Set No
TV Setup Yes
V-chip Set Yes
On/Off Timer Set Yes
Picture Yes
Audio No
Sap On/Off No
Auto Repeat On/Off Yes
System Setup Yes
Clock Set Yes
Language Yes
Auto Clock On/Off Yes
Standard Time Yes
Daylight Saving Time Yes
Commercial Advance No
Marking On/Off No
Blueback On/Off No
Playback Auto/Manual No
Unmarked Tape No
Movie Advance No
Go To Movie No
Go To Preview No
G-CODE(or SHOWVIEW or PLUSCODE)No. Entry No
Clock Yes
CH/AV Yes
Tape Counter(Linear Counter) Yes
Tape Speed Yes
Sleep Time Yes
Stereo/Audio Output No
Bilingal 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 No
Muting Yes
Hi-Fi No
Repeat Yes
Zero Return No
DEW Yes
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 5 hours
OTPB Valid Time -
Sleep Timer Max Time 120 min.
Step 10 min.
On/Off Timer Program(On Tim / Off Tim) 1 prog.
Auto Shut Off No Signal 15 min.
No Operation -
Timer Back-up (at Power Off Mode) 5 sec.
G-12 Remote Unit RC-CG
Control Glow in Dark Remocon Yes
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys 41 Keys
Keys Power Yes
1 Yes
2 Yes
3 Yes
4 Yes
5 Yes
6 Yes
7 Yes
8 Yes
9 Yes
0 Yes
A3-2

GENERAL SPECIFICATIONS
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
Eject Yes
Counter Reset Yes
Speed Yes
Timer Rec Yes
TV Monitor Yes
Quick View Yes
Program Yes
Slow No
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 No
G-13 Features Auto Head Cleaning Yes
Auto Tracking Yes
Auto Search No
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
Reverse Slow No
One Touch Playback No
Auto CH Memory Yes
Closed Caption Yes
TV Auto Shut off Function Yes
End Call No
Index Search No
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
Protect of FBT Leak Curcuit No
Dirty Head No
V-chip USA V-chip Yes
CANADA V-chip No
Power On Memory No
Zero Return Yes
CM Advance No
Movie Advance No
G-14 Accessories Owner's Manual Language English / Spanish
w/Guarantee Card No
Remote Control Unit Yes
Battery No
UM size x pcs -
OEM Brand -
Rod Antenna Yes
Poles 2pole
Terminal F type
w/300 ohm to 75 ohm Antenna Adapter Yes
Loop Antenna No
Terminal -
U/V Mixer No
300 ohm to 75 ohm Antenna Adapter No
A3-3

GENERAL SPECIFICATIONS
Antenna Change Plug No
DC Car Cord (Center+) Yes
AC Plug Adapter No
AC Cord No
AV Cord (2Pin-1Pin) No
Guarantee Card Yes
Registration Card No
ESP Card No
Warning Sheet No
Dew/AHC Caution Sheet No
Quick Set-up Sheet No
Circuit Diagram No
Service Facility List No
Important Safeguard No
G-15 Interface Switch Power Yes
Play Yes
Pause/Still No
System Select 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 Red
Rec/OTR Red
T-Rec Red
On Timer No
CS No
Key Light up Rec/OTR No
One Touch Playback No
Play No
Terminals Front Video Input RCAx1
Audio Input RCAx1
Other Terminal Head Phone(Stereo & Mono, 3.5mm)
Rear Video Input RCAx1
Audio Input RCAx1
Video Output RCAx1
Audio Output RCAx1
Euro Scart No
Diversity No
Ext Speaker No
DC Jack 12V(Center +) Yes
VHF/UHF Antenna Input F Type
AC Inlet No
G-16 Set Size Approx. W x D x H (mm) 362 x 370.5 x 382
G-17 Weight Net (Approx.) 12.5 kg (27.6 lbs)
Gross (Approx.) 14.5 kg (32.2 lbs)
G-18 Carton Master Carton No
Content -
Material -
Dimensions W x D x H(mm) -
Description of Origin -
Gift Box Yes
Material
Dimensions W x D x H(mm) 423 x 447 x 443
Design As per Buyer's
Description of Origin Yes
Drop Test Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces
Height (cm) 62
Container Stuffing(40' container) 700 Sets
G-19 Cabinet Material Cabinet Front PS 94V0 DECABROM
Cabinet Rear PS 94V0 DECABROM
Jack Panel PS 94V0
Double / Full Color Carton W/Photo
A3-4

Remove the Anode Cap.
(Refer to REMOVAL OF ANODE CAP)
Disconnect the following connectors:
(CP801 and CP850).
Remove the CRT PCB in the direction of arrow.
DISASSEMBLY INSTRUCTIONS
REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
B1-1
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.
CRT PCB
Front Cabinet
Fig. 1-2
1.
1-1: BACK CABINET (Refer to Fig. 1-1)
1.
2.
3.
4.
5.
Remove the 4 screws (1).
Remove the screw (2).
Remove the 2 screws (3) which are used for holding the
Back Cabinet.
Remove the AC cord from the AC cord hook (4).
Remove the Back Cabinet in the direction of arrow.
Fig. 1-1
Front Cabinet
(4)
(3) (1)
(1)
(1)
(2)
(1)
(3)
1-2: CRT PCB (Refer to Fig. 1-2)
1.
2.
3.
1-3: TV/VCR BLOCK (Refer to Fig. 1-3)
1.
2.
3.
4.
1-4: MAIN PCB (Refer to Fig. 1-4)
1.
2.
3.
4.
5.
6.
7.
8.
Remove the screw (1).
Remove the Main PCB Holder.
Remove the 2 screws (2).
Remove the 3 screws (3).
Remove the screw (4).
Remove the TV-PCB Holder.
Disconnect the following connectors:(CP502 and CP820).
Remove the Main PCB in the direction of arrow.
(1) (1)
Fig. 1-3
Remove the 2 screws (1).
Disconnect the following connectors:
(CP2201, CP4202, CP401 and CP403).
Unlock the support 2.
Remove the TV/VCR Block in the direction of arrow.
TV/VCR Block
Front Cabinet
Back Cabinet
Fig. 1-4
(2)
UP TO
RELEASE
TV- PCB Holder
Main PCB
(1)
Main PCB Holder
VCR Block
(3) (3)
(3)
(2)
(2)
(4)

B1-2
DISASSEMBLY INSTRUCTIONS
1-7: JACK PLATE AND SYSCON PCB (Refer to Fig. 1-7)
Remove the screw (1).
Remove the Syscon PCB in the direction of arrow (A).
Unlock the 2 supports (2).
Remove the Jack Plate in the direction of arrow (B).
Fig. 1-7
Jack Plate
(1)
Deck Holder
Syscon PCB
(A)
(2)
(2)
(B)
1.
2.
3.
4.
1-6: DECK CHASSIS (Refer to Fig. 1-6)
1.
2.
3.
4.
5.
Remove the screw (1).
Remove the Plate Cover Light.
Remove the 3 screws (2).
Disconnect the following connectors:
(CP605, CP1001, CP4001, CP4002 and CP4003).
Remove the Deck Chassis and Shield Cover Deck in
the direction of arrow.
Fig. 1-6
1.
2.
3.
4.
5.
6.
Remove the 2 screws (1).
Remove the screw (2).
Remove the screw (3).
Remove the Deck Shield Plate in the direction of arrow (A).
Remove the screw (4).
Remove the Bottom Shield in the direction of arrow (B).
Fig. 1-5
(1)
Deck Shield Plate
VCR Block
(2)
(1)
(A)
(B)
(4)
(3)
Plate Cover Light
Syscon PCB
(1)
(2)
(2)
Deck Chassis
(2)
1-5: JDECK SHIELD PLATE AND BOTTOM SHIELD
(Refer to Fig. 1-5)
Bottom Shield
Shield Cover Deck

DISASSEMBLY INSTRUCTIONS
B2-1
2. REMOVAL OF 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 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.
1.
2.
3.
Fig. 2-1
(2)
(2)
Main Chassis
Main Chassis
Top Bracket
Top Bracket
Main Chassis
Main Chassis
Cassette Side L
Cassette Side R Locker R
Fig. 2-2
2-3: CASSETTE SIDE L/R (Refer to Fig. 2-3-A)
Remove the Locker Spring.
Unlock the 4 supports (1) and then remove the
Cassette Side L/R.
Unlock the support (2) and then remove the Locker R.
1.
2.
3.
Link Ass'y
NOTE
1.
2.
In case of the Locker R installation, check if the two
positions of Fig.2-3-B are correctly locked.
When you install the Cassette Side R, be sure to move
the Locker R after installing.
2-4: LINK UNIT (Refer to Fig. 2-4)
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. 2-4
Fig. 2-3-A
Cassette Side L
Cassette Side R
(1)
(1)
(1)
Locker R (1)
Cassette Holder
Locker Spring
(2)
Fig. 2-3-B
Check if these
positions are locked.
(A)
Link Unit
Main Chassis
(1) Link Unit
(B)
Main Chassis
Cassette Side R
Locker R
(1) (1)
NOTE
1. After the installation of the Top Bracket, bend the
support (1) so that the Top Bracket is fixed.
2-5: LINK LEVER/FLAP LEVER/BOT COVER
(Refer to Fig. 2-5)
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.
Link Lever
Flap Lever
(2)
(1) BOT Cover

DISASSEMBLY INSTRUCTIONS
B2-2
2-7: TENSION ASS'Y (Refer to Fig. 2-7-B)
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 (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.
1.
2.
3.
4.
5.
6.
2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A)
Remove the screw (1).
Remove the Loading Motor.
Remove the Worm.
1.
2.
3.
Fig. 2-6-A
€ Screw Torque: 3 ± 0.5kgf€cm
Loading Motor
(1)
Main Chassis
Worm
NOTE
1.
2.
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.
Fig. 2-6-B
19.2 ± 0.1mm
Safety surface for pressing
of the insert.
Fig. 2-7-D
Tension Band
NOTE
1.
2.
3.
In case of the Tension Band installation, note the
direction 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.
Tension Band
Tension Connect
Tension Connect
[OK]
[NG]
Fig. 2-7-E
Tension Connect
Main Chassis
Fig. 2-7-C
Tension Band
Tension Connect
Fig. 2-7-A
Tension Arm Ass'y
Fig. 2-7-B
Tension Spring
(1)
(2)
(4)
Tension Band
Tension Arm Ass'y
(3)
(1)
Tension Holder
Tension Connect
Fig. 2-6-C
Loading Motor
Cassette Opener

DISASSEMBLY INSTRUCTIONS
B2-3
Fig. 2-9-B
Big Hole
(S Reel) Small Hole
(T Reel)
Fig. 2-9-C
Idler Arm Ass'y
[OK]
[NG]
Clutch Gear
Idler Arm Ass'y
Clutch Gear
Fig. 2-8-B
T Brake Band
NOTE
1. In case of the T Brake Band installation, install correctly
as Fig. 2-8-B.
T Brake Arm
[OK]
[NG] T Brake Band
T Brake Arm
2-9: S REEL/T REEL/IDLER ARM ASS'Y/IDLER GEAR
(Refer to Fig. 2-9-A)
Remove the S Reel and T Reel.
Remove the 2 Polyslider Washers (1).
Remove the Idler Arm Ass'y and Idler Gear.
1.
2.
3.
NOTE
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
(FG-84M). (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)
1.
2.
3.
4.
5.
6.
Fig. 2-9-A
S Reel
(1)
(A) T Reel
(A)
(1)
Idler Arm Ass'y
Idler Gear
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.
2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-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.
T Brake Band
Hook section
T Brake Spring
T Brake Arm
(1)
(1)
Fig. 2-8-A
(B)

DISASSEMBLY INSTRUCTIONS
B2-4
Spring Position Fig. 2-11-B
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)
2-11: A/C HEAD (Refer to Fig. 2-11-A)
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.
1.
2.
3.
4.
NOTE
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).
1.
2.
3.
2-10: CASSETTE OPENER/PINCH ROLLER BLOCK/
P5 ARM ASS'Y (Refer to Fig. 2-10-A)
Unlock the support (1) and remove the Cassette
Opener.
Remove the Pinch Roller Block and P5 Arm Ass'y.
1.
2.
NOTE
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.
1.
2.
Fig. 2-10-A
(1) Cassette Opener
P5 Arm Ass'y
Pinch Roller Block
Main Chassis
Fig. 2-10-B
Can be seen the hole of the
Main Cam.
Can be seen the hole of
the Pinch Roller Cam.
P5 Arm Ass'y
Pinch Roller Block
A/C Head
(2)
(2)
A/C Head Spring
(1)
(3)
(1)
(2)
(2)
A/C Head Base
Fig. 2-11-A
€Screw Torque: 5 ± 0.5kgf€cm (Screw (1))
2-13: AHC ASS'Y/CYLINDER UNIT ASS'Y
(Refer to Fig. 2-13)
Unlock the support (1) and remove the AHC Ass'y.
Disconnect the following connector:
(CD2001)
Remove the 3 screws (2).
Remove the Cylinder Unit Ass'y.
1.
2.
3.
4.
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.
(1)
AHC Ass'y
Cylinder Unit Ass'y
(2)
(2)
(2)
€ Screw Torque: 3 ± 0.5kgf€cm
(1)
(3)
(2)

DISASSEMBLY INSTRUCTIONS
B2-5
Fig. 2-15-A
NOTE
In case of the Pinch Roller Cam and Main Cam
installation, install them as the circled section of Fig. 2-
15-B so that the each markers are met. (Refer to Fig.
2-15-B)
Fig. 2-15-B
2-15:
Remove the E-Ring (1), then remove the Main Cam.
Remove the E-Ring (2), then remove the Pinch Roller
Cam and Joint Gear.
1.
2.
MAIN CAM/PINCH ROLLER CAM/JOINT GEAR
(Refer to Fig. 2-15-A)
(1)
Main Cam
Pinch Roller Cam
Joint Gear
(2)
1.
Pinch Roller Cam
Main Cam
Marker
2-16: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-16-A)
1.
2.
Remove the E-Ring (1) and remove the Main Loading
Gear.
Remove the Main Rod, Tension Lever, Loading Arm S
Ass'y and Loading Arm T Ass'y.
(1)
Main Rod Main Loading Gear
Tension Lever
Loading Arm T Ass'y
Loading Arm S Ass'y
Fig. 2-16-A
2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A)
Remove the Capstan Belt.
Remove the 3 screws (1).
Remove the Capstan DD Unit.
1.
2.
3.
Fig. 2-14-A
€Screw Torque: 4 ± 0.5kgf€cm
Capstan DD Unit
Capstan Belt
(1) (1)
(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)
NOTE
1.
Fig. 2-14-B
Fig. 2-14-C
Capstan DD Unit
Main Chassis
Silicon Bond
Applied position of
silicon bond
Be careful not to apply the silicon
bond to the Pinch Roller.

DISASSEMBLY INSTRUCTIONS
B2-6
2-18:
Remove the P4 Cap.
Unlock the support (1) and remove the Cassette Guide
Post.
Remove the Inclined Base S Unit and Inclined Base T
Unit.
1.
2.
3.
Fig. 2-18-A
CASSETTE GUIDE POST/INCLINED BASE S/T
UNIT/P4 CAP (Refer to Fig. 2-18-A)
P4 Cap
Cassette Guide Post
(1)
Inclined Base T
Unit
Inclined Base S
Unit
NOTE
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.
1.
2.
3.
"A"
[OK]
[NG]
"B"
P4 Cap Cassette Opener
Fig. 2-18-B
Fig. 2-18-C
Cassette Guide Post
Cassette Guide Post
2-17:
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.
1.
2.
3.
4.
Fig. 2-17-A
NOTE
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. 2-16-B)
Fig. 2-16-B
(1)
Clutch Ass'y
Coupling Gear Clutch Lever
Ring Spring
Coupling Spring
Clutch Gear
CLUTCH ASS'Y/RING SPRING/CLUTCH LEVER/
CLUTCH GEAR (Refer to Fig. 2-17-A)
NOTE
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)
1.
Clutch Ass'y
Fig. 2-17-B
Coupling Gear
Loading Arm T Unit
Main Loading Gear
Marker
Marker
Loading Arm S Unit

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
Masking Tape
(Cotton Tape)
DISASSEMBLY INSTRUCTIONS
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.
Absorb the solder left on the pattern using the Braided
4.
5. Shield Wire. (Refer to Fig. 4-4.)
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, be always 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

KEY TO ABBREVIATIONS
A
B
C
D
E
F
G
H
A/C
ACC
AE
AFC
AFT
AFT DET
AGC
AMP
ANT
A.PB
APC
ASS'Y
AT
AUTO
A/V
BGP
BOT
BPF
BRAKE SOL
BUFF
B/W
C
CASE
CAP
CARR
CH
CLK
CLOCK (SY-SE)
COMB
CONV
CPM
CTL
CYL
CYL-M
CYL SENS
DATA (SY-CE)
dB
DC
DD Unit
DEMOD
DET
DEV
E
EF
EMPH
ENC
ENV
EOT
EQ
EXT
F
FBC
FE
FF
FG
FL SW
FM
FSC
FWD
GEN
GND
H.P.F
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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
I
K
L
M
N
O
P
R
S
H.SW
Hz
IC
IF
IND
INV
KIL
L
LED
LIMIT AMP
LM, LDM
LP
L.P.F
LUMI.
M
MAX
MINI
MIX
MM
MOD
MPX
MS SW
NC
NR
OSC
OPE
PB
PB CTL
PB-C
PB-Y
PCB
P. CON
PD
PG
P-P
R
REC
REC-C
REC-Y
REEL BRK
REEL S
REF
REG
REW
REV, RVS
RF
RMC
RY
S. CLK
S. COM
S. DATA
SEG
SEL
SENS
SER
SI
SIF
SO
SOL
SP
STB
SW
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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