Toshiba MV19L2 Schematic
FILE NO. 140-200107
SERVICE MANUAL
COLOR TELEVISION/
VIDEO CASSETTE RECORDER
MV19L2
SERVICING NOTICESON 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.
GENERAL SPECIFICATIONS
J~W,
G-1 TV CRT CRT Size / Visual Size 19 inch / 480.0mmV
G-2 VCR System VHS
G-3 Tuning Broadcasting System US Sysytem 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 1.5 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/Yes
Erase(Full Track Erase) Yes
Tape Rec PAL Speed NTSC SP/SLP(EP)
Play PAL -
Fast Forward / Rewind Time (Approx.) FF:4'50"/REW:2'30"
Forward/Reverse NTSC or PAL-M SP/SLP(EP)=3x,5x/9x,15x
Picture Search
Slow Speed Frame Advance -
System Tuner and System 1Tuner
Receive CH Destination USA+CATV
Intermediate Picture(FP) 45.75MHz
Frequency Sound(FS) 41.25MHz
Preset CH No
Stereo/Dual TV Sound No
Audio Signal Input Level RCA-8dB/50Kohm
Hi-Fi Audio Signal Dynamic Range : More than -
Power Consumption at AC 86 W at 120V 60Hz
Protector Power Fuse Yes
Deflection 90 degree
Magnetic Field BV/BH +0.45G / 0.18G
Position Front
Size 3 inch
Impedance 8 ohm
10%(Typical) 1.0 W
Loading System Front
Motor 3
NTSC SP/SLP(EP)
Cassette at T-120
Slow -
Tuning System F-Synth
Input Impedance VHF/UHF 75 ohm
CH Coverage
FP-FS 4.5MHz
Output Level S/N Ratio (Weighted) 50 dB
Horizontal Resolution at SP Mode 220 Lines
Output Level -
Wow And Flutter : Less than Channel Separation : More than Harmonic Distortion : Less than -
DC -
at DC Stand by (at AC) 5 W at 120V 60 Hz
Per Year -
Dew Sensor
Radiation FCC
X-Radiation DHHS
Storage -20oC ~ +60oC
2~69, 4A,A-5~A-1, A~I,
No
W+1~W+84
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 ,SAP
Repeat Yes
Zero Return
DEW
and Timer Timer Events 8 prog/ 1 month
Back-up One Touch Recording Max Timer 5 Hours
OTPB Valid Time No
Sleep Timer Max Timer 120
On/Off Timer Program(On Timer / Off Timer) 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
System Setup Yes
Clock Set Yes
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.
GENERAL SPECIFICATIONS
G-12 R
Uni
RC-DQ
emote
Control Glow in Dark Remocon Yes
G-13 Features Auto Head Cleaning Yes
t
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 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(2Keys)
Eject Yes
Counter Reset Yes
Speed Yes
Timer Rec Yes(2Keys)
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
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
FBT Leak Test Protect Yes
Keys
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
GENERAL SPECIFICATIONS
G-14 Accessories Owner's Manual Language English
Remote Control Unit Yes
Rod Antenna
Loop Antenna
U/V Mixer
DC Car Cord (Center+)
Guarantee Card
Warning Sheet
Circuit Diagram
Antenna Change Plug
Service Facility List
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 Yes
G-15 Interface Switch Power Yes
Indicator Power
Key Light up Rec/OTR
Terminals Front Video Input RCAx1
Rear Video Input
G-16 Set Size Approx. W x D x H (mm) 489 x 462 x 480
G-17 Weight Net (Approx.) 19.0 kg
w/Guarantee Card Yes
Poles -
Terminal -
w/300 ohm to 75 ohm Antenna Adapter -
Terminal -
UM size x pcs UM-4 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 Yes
Rec/OTR
T-Rec
On Timer
CS
One Touch Playback
Play
Audio Input RCAx1
Other Terminal Head Phone(Stereo & Mono, 3.5mm)
Audio Input
Video Output
Audio Output
Euro Scart
Diversity
Ext Speaker
DC Jack 12V(Center +)
VHF/UHF Antenna Input
AC Inlet
Gross (Approx.) 22.0 kg
F Type
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Red
Red
Red
No
No
No
No
No
No
No
No
No
No
No
No
No
No
(41.8 lbs)
(48.5 lbs)
GENERAL SPECIFICATIONS
G-18 Carton Master Carton
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) 559 x 538 x 555
Design As per Buyer's
Description of Origin Yes
Drop Test Natural Dropping At
Height (cm) 46
Container Stuffing(40' container) 352
G-19 Cabinet Material Cabinet Front PS 94V0 DECABROM
Cabinet Rear PS 94V0 DECABROM
Jack Panel PS 94V0
No
1 Corner / 3 Edges / 6 Surfaces
Sets
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1: BACK CABINET (Refer to Fig. 1-1)
1.
Remove the 6 screws 1.
2.
Remove the screw 2.
3.
Remove the AC cord from the AC cord hook 3.
4.
Remove the Back Cabinet in the direction of arrow.
Front Cabinet
1
1
1
2
Back Cabinet
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 CP851B).
3.
Remove the CRT PCB in the direction of arrow.
1
1
1
3
Fig. 1-1
1-3: TV/VCR BLOCK (Refer to Fig. 1-3)
1.
Remove the 2 screws 1.
2.
Disconnect the following connectors:
(CP352, CP353, CP354, CP401, CP502 and CP503).
3.
Unlock the support 2.
4.
Remove the TV/VCR Block in the direction of arrow.
1
Front Cabinet
1
2
UP TO
RELEASE
TV/VCR Block
Fig. 1-3
1-4: DECK CHASSIS AND SYSCON PCB
(Refer to Fig. 1-4)
1.
Remove the 3 screws 1.
2.
Remove the 2 screws 2.
3.
Remove the screw 3.
4.
Remove the screw 4.
5.
Disconnect the following connectors:
(CP1004, CP1005, CP1006, CP4001, CP4002 and
CP4003).
6.
Remove the Deck Chassis and Deck Shield Plate in the
direction of arrow (A).
7.
Remove the screw 5.
8.
Remove the Syscon PCB in the direction of arrow (B).
1
3
1
4
Front Cabinet
CRT PCB
Fig. 1-2
Deck Shield Plate
1
2
(A)
5
2
Deck Chassis
Syscon PCB
(B)
Deck Holder
Fig. 1-4
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
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
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.
Unlock the 2 supports 2 and remove the Deck PCB
4.
(BOT).
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
Loading Motor Ass'y
2
Main Chassis
1
Deck PCB
(BOT)
• 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
Link Lever
Fig. 2-7
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
1
Fig. 2-8
DISASSEMBLY INSTRUCTIONS
2-10: T BRAKE ASS'Y (Refer to Fig. 2-10)
1.2.Remove the T Brake Spring.
Turn the T Brake Ass'y clockwise and bend the hook
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
(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
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.
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.
Remove the 3 screws 2.
2.
Remove the Cylinder Unit Ass'y.
3.
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.
AHC Ass'y
Capstan Belt
Capstan DD Unit
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
Cylinder Unit Ass'y
2
(2)
• Screw Torque: 3 ± 0.5kgf•cm
1
Fig. 2-17-A
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
(1)
2
2
(3)
Check the hole of Main
Chassis can be seen.
P5 Cam
Fig. 2-15
Main Cam
Marker
Fig. 2-17-B
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- 1 9 : 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 Reflecter.
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 Reflecter
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
Inclined S Unit
Loading Gear Holder
2
Inclined T Unit
• Screw Torque: 5 ± 0.5kgf•cm
Loading Arm S Ass'y
Fig. 2-19-A
• 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
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.
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
1. Clean the spot where the cap was located with a small
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.
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.)
Screwdriver
Alligator Clip
GND on the CRT
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
Support
CRT
Fig. 3-1
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
5.6.Confirm that the Support is securely connected.
Put on the Rubber Cap without moving any parts.
Fig. 3-5
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
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
SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter SERVICE MODE, unplug AC cord till lost actual clock time. Then press and hold Vol (-) button of main unit and
remocon key simultaneously.
The both pressing of set key and remote control key will not be possible if clock has been set. To reset clock, either unplug
AC cord and allow at least 5 seconds before Power On.
Set Key Remocon Key Operations
VOL. (-) MIN
VOL. (-) MIN 1
VOL. (-) MIN
VOL. (-) MIN
VOL. (-) MIN 4
VOL. (-) MIN
VOL. (-) MIN
0
2
3
5
6
Releasing of V-CHIP PASSWORD.
Initialization of the factory.
NOTE: Do not use this for the normal servicing.
Horizontal position adjustment of OSD.
NOTE: Also can be adjusted by using the Adjustment MENU.
Refer to the "ELECTRICAL ADJUSTMENT" (OSD HORIZONTAL).
Adjust the PG SHIFTER automatically.
Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER).
Adjust the PG SHIFTER manually.
Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER).
Adjusting of the Tracking to the center position.
NOTE: Also can be adjusted by pressing the ATR button for more than 2 seconds
during PLAY.
POWER ON total hours and PLAY/REC total hours are displayed on the screen.
Refer to the "PREVENTIVE CHECKS AND SERVICE INTERVALS" (CONFIRMATION
OF USING HOURS).
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "NOTE FOR THE REPLACING OF MEMORY IC".
VOL. (-) MIN 8
VOL. (-) MIN 9
Method Operations
Press the ATR button on the
remote control for more than
2 seconds during PLAY.
Make the short circuit between
the test point of SERVICE and
the GND.
Writing of EEPROM initial data.
NOTE: Do not use this for the normal servicing.
Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).
Adjusting of the Tracking to the center position.
Refer to the "MECHANICAL ADJUSTMENT" (GUIDE ROLLER) and "ELECTRICAL
ADJUSTMENT" (PG SHIFTER).
The EOT/BOT/Reel sensor do not work at this moment.
Refer to the "PREPARATION FOR SERVICING"
PREVENTIVE CHECKS AND SERVICE INTERVALS
The following standard table depends on environmental conditions and usage. Unless maintenance is properly
carried out, the following service intervals may be quite shortened as harmful effects may be had on other parts.
Also, long term storage or misuse may cause transformation and aging of rubber parts.
Time
Parts Name
Audio Control Head
Full Erase Head
(Recorder only)
Capstan Belt
Pinch Roller
Capstan DD Unit
Loading Motor
Tension Band
Capstan Shaft
Tape Running
Guide Post
Cylinder Unit
: Clean
: Replace
500
hours
1,000
hours
1,500
hours
2,000
hours
3,000
hours
Notes
Clean those parts in
contact with the tape.
Clean the rubber, and parts
which the rubber touches.
Replace when rolling
becomes abnormal.
Clean the Head
CONFIRMATION OF USING HOURS
POWER ON total hours and PLAY/REC total hours can be checked on the screen.
Total hours are displayed in 16 system of notation.
NOTE: The confirmation of using hours will not be possible if clock has been set. To reset clock, either unplug
AC cord and allow at least 5 seconds before Power On.
1.
Set the VOLUME to minimum.
2.
While holding down VOLUME button on front cabinet, press key 6 on remote control simultaneously.
3.
After the confirmation of using hours, turn off the power.
INIT 00 83
POWER ON
PLAY/REC
(16 x 16 x 16 x thousands digit value) + (16 x 16 x hundreds digit value) + (16 x tens digit value) + (ones digit value)
0010
0003
Initial setting content of MEMORY IC.
POWER ON total hours.
PLAY/REC total hours.
PREVENTIVE CHECKS AND SERVICE INTERVALS
CLEANING
NOTE
After cleaning the heads with isopropyl alcohol, do not
run a tape until the heads dry completely. If the heads
are not completely dry and alcohol gets on the tape,
damage may occur.
1. AUDIO CONTROL HEAD
Clean the Audio Control Head with the cotton stick
soaked by alcohol. Clean the full erase head in the
same manner. (Refer to the figure below.)
Head
2. TAPE RUNNING SYSTEM
When cleaning the tape transport system, use the
gauze moistened with isopropyl alcohol.
3. CYLINDER
Wrap a piece of chamois around your finger. Dip it in
isopropyl alcohol. Hold it to the cylinder head softly.
Turn the cylinder head counterclockwise to clean it (in
the direction of the arrow). (Refer to the figure below.)
NOTE
Do not exert force against the cylinder head. Do not move
the chamois upward or downward on the head.
Use the chamois one by one.
Head
Audio Control Head
Cylinder Head
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