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
G-1.Ou tline of the Pr oduct
14 inch(335.4
Color CRT 90 degree deflection
2 -Speed 1/2" Video Cassette Recorder
G-2.VCR Format
VHS Standar d
G-3.Video Recording System:Rotary,slant azimuth two head helical scan system
Luminance Compo nent:FM record in g
Chrominance Component:Low frequency converted direct recording
G-4.Broadcasting System
U.K. System I
G-5.Color SystemNTSCPALSECAM or Monochrome signal
G-6.NTSC Playback(PAL 60Hz)
G-7.MESECAM
G-8.Cassette Tape
VHS type video cassette tape Width 12.65mm (1/2 Inch)
VHS-C type video cassette tape Width 12.65mm (1/2 Inch)
Calendar : 1990/1/1 ~ 2081/12/31 (Initial
Built-in 1 Month 8 Events Programmable Timer
One Touc h Record ing : Max Time SP Mode 5 LP Mode 10 Hours
Sleep TimerYes Max 120 Min.( 10 Min. Step)No
On/Off TimerYes 1 ProgramsNo
Wake Up TimerYes ProgramsNo
G-37.Timer back up Time
More than 30 Minutes (at Power Off Mode)
G-38.Terminals
VHF/UHF AntennaDin Type F-Type France Type
Front Video Input(RCA ø8.3)
Front Audio Input(RCA ø8.3)
Rear Video Input(RCA ø8.3)
Rear Audio Input(RCA ø8.3)
Rear Vide o Output(RCA ø8.3)
Rear Audio Output(RCA ø8.3)
Audio Ou tput(Rear)Phono Jack (RCA ø8.3)
21 Pin (x 1 )DC Jack 12V (Center +)
AC InletExt Speaker
DiversityEar Phone
Head Phone
Power FuseDew Sensor
PS94HBDECABROM
ABS94V2NON-DECA
94V0
PS94HBDECABROM
ABS94V2NON-DECA
94V0
PS94HBDECABROM
ABS94V2NON-DECA
94V0
Front Cassette Loading System
Top Loading System
ºC
2000/1/1 2005/1/1)
G-39.Indicator
Indicator
G-40.O n S creen Display
Menu
G-CODE(o r SHOWVIEW or PLUSCODE)No. Entry(Option)
ClockCH/AV
Tape CounterTape Speed
Sleep TimeSound Mute
Control L ev el ( Vol, Bright, Cont, Color, Tint, Sharpness)
Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pa use (Symbol Mark)
Auto Tracking/Manual Tracking
IndexRepeatVPS
Tone 1/2StereoPDC
G-41.O S D Language
EngGerFreSpaItaPorJan
OSD Language Set ting
EngGerFreSpaItaPorJan
Not Appl icable
G-42.Speaker
Position
Size 1.5 x 2.5 inches
Imp. 8 ohm x 1 pcs
OutputMax 1.5 W
G-43.EXT Speaker
Yes WImp ohmNo
G-44.Carton
Master Carton:
Content: ---- Set
Material: ---- / ---- Corrugated Carton
Dimensions: ---- mm(W) ---- mm(D) ---- mm(H)
Description of OriginYesNo
Gift Box
Material
Dimensions: 423 mm(W) 447
Design:As Per BUYER 's
Description of Origin:YesNo
Drop TestNatural Dropping At 1 Corner / 3 Edges / 6 Surfaces
Container Stuffing: 700 Sets / 40' container
GENERAL SPECIFICATIONS
StandbyRec/OTRT-RecOn T imerNONE
(Red)(Red
ATS
Timer Rec Set
Ch Set-up
Auto TuningCh Mapping
CH AllocationCh T uning( Decoder On/Off)
TV Set-up
On/Off Timer SetAudio
Picture
VCR Set-up
Auto Repeat On/OffSystem Select
Scena Repeat
User Regist ra tion
System Set-up
Clock Set( Calendar 12H 24H)
Language
FrontSideBottom
10% 1.0 W (Typical)
NeedNo Need
Double/Brown C orrugated Carton ( with Photo La bel)
Double/Whi te Co r ru gat ed Ca rt on ( with Photo La bel)
Remote Control UnitQuick Set -up Sheet
Rod Ant enn a( One Pole Two Pole/ F-Type DIN Type France Type)
Loop Antenna( F-Type DIN Type France Type)
U/V MixerBattery (UM- 4 x 2 )
DC Car Cord (Center+)AC Cord
Guarantee Ca rdAV Cord (2Pin-1Pin)
Warning SheetRegistra tio n Card
Circuit DiagramPTB Sheet
Antenna Change Plug300 ohm to 75 ohm Antenna Plug
Service Facility ListEuro Warranty Information Sheet
ESP CardRF Cable
G-46.Other Features
Auto Head CleaningIndex Search
Auto TrackingAuto Search
CH Auto Set-Up/Auto Clo ckATS
VIDEO PLUS+(SHOWVIEW,G-CODE)PDC
HQ (VHS Standard High Quality )VPS
Auto Power On, Auto Play, Auto Rewind, Auto Eject,Auto Repeat System
Forward / Reverse Picture SearchSQPB
One Touch PlaybackCATV
Auto CH MemoryAnti-Theft
TV Auto S hutt off FunctionT'Text( Fast Top Uni)
TV Monitor
G-47.Switch
Front
PowerChannel UpVolume Up
PlayChannel DownVolume Down
Pause/StillF.FWD/CueRew/Rev
System SelectEject/StopRec/OTR
One Touch PlaybackMain Power SWInput Select
Rear
Color On/Off (SE CAM only)Degauss
Main Power SWAC/DC
GENERAL SPECIFICATIONS
G-48.Magnetic Fiel d
BV :+0.45GBV :+0.35GBV :+0.25G
BH : 0.18GBH :0.30GBH :0.30G
BV :-0.15GBV :-0.25GBV :-0.50G
BH :0.15GBH :0.15GBH :0.30G
G-49.Remote Control
Unit: RC-DM
Power Source:D.C 3 V Battery UM - 4 x 2
Glow in Dark RemoconYesNo
Total 41 Key
Remove the 2 screws 2 which are used for holding the
Back Cabinet.
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
2
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.
3
Back Cabinet
1
Fig. 1-1
1-3: TV/VCR BLOCK (Refer to Fig. 1-3)
1.
Remove the 2 screws 1.
2.
Disconnect the following connectors:
(CP302, CP351, CP757, CP401, CP501 and CP502).
3.
Unlock the support 2.
4.
Remove the TV/VCR Block in the direction of arrow.
Front Cabinet
1
TV/VCR Block
1
2
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 3 screws 3.
5.
Disconnect the following connectors:
(CP810 and CP820).
6.
Remove the Main PCB in the direction of arrow.
2
2
Main PCB
Main PCB Holder
1
3
3
3
Fig. 1-3
Front Cabinet
CRT PCB
VCR Block
Fig. 1-4
Fig. 1-2
DISASSEMBLY INSTRUCTIONS
1-5: DECK SHIELD PLATE (Refer to Fig. 1-5)
1.
Remove the 2 screws 1.
2.
Remove the 4 screws 2.
3.
Remove the screw 3.
4.
Remove the Deck Shield Plate in the direction of arrow (A).
5.
Remove the screw 4.
6.
Remove the Shield Plate Bottom in the direction of arrow (B).
Deck Shield Plate
3
1
1
(A)
VCR Block
2
2
(B)
1
1
1
Deck Chassis
Syscon PCB
Fig. 1-6
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.
Unlock the 2 supports 3.
5.
Remove the Jack Plate in the direction of arrow (B).
Jack Plate
Shield Plate Bottom
4
2
1-6: DECK CHASSIS (Refer to Fig. 1-6)
1.
Remove the 3 screws 1.
2.
Disconnect the following connectors:
(CP1004, CP1005, CP1006, CP4001, CP4004 and
CP4005).
3.
Remove the Deck Chassis in the direction of arrow.
2
Fig. 1-5
Syscon PCB
2
3
(B)
1
(A)
Deck Holder
2
3
Fig. 1-7
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.
1.
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
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.
NOTE
When you install the Cassette Side R, be sure to move the
Locker R after installing.
1
1
Locker R
Cassette Side R
1
1
Cassette Side L
Fig. 2-5
1
Main Chassis
• The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-A
DISASSEMBLY INSTRUCTIONS
2-6: LINK ASS'Y (Refer to Fig. 2-6)
Set the Link Ass'y to the Eject position.
1.
Remove the (A) side of the Link Ass'y first, then remove
2.
the (B) side.
Link Ass'y
(A)
Main Chassis
(B)
Link Ass'y
Main Chassis
Fig. 2-6
2-7: LOADING MOTOR ASS'Y (Refer to Fig. 2-7)
Remove the Link Lever.
1.
Remove the Dumper Spring.
2.
Remove the 2 screws 1.
3.
Unlock the support 2 and remove the Loading Motor
4.
Ass'y.
Unlock the 2 supports 3 and remove the Deck PCB
5.
(BOT).
1
Dumper Spring
Loading Motor Ass'y
2
2-9: TENSION ASS'Y (Refer to Fig. 2-9-A)
Move the Inclined S Ass'y to the back side.
1.
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.
Unlock the support 3 and remove the Tension Holder.
6.
Remove the SS Brake Spring.
7.
Remove the SS Arm Brake.
8.
Tension Adjust
2
Tension Spring
SS Brake Spring
SS Arm Brake
2
1
3
Tension Band Ass'y
Tension Arm Ass'y
Tension Holder
Inclined S Ass'y
Fig. 2-9-A
NOTE
When you install the Tension Adjust, install as shown in
Fig. 2-9-B. (Refer to Fig. 2-9-B)
3
Main Chassis
• Screw Torque: 5 ± 0.5kgf•cm
1
Deck PCB
(BOT)
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
Link Lever
Fig. 2-7
Fig. 2-8
Adjust the direction of the Marker to inside.
2-10: T BRAKE ASS'Y (Refer to Fig. 2-10)
Remove the T Brake Spring.
1.
Remove the T Brake Ass'y.
2.
T Brake Ass'y
T Brake Spring
Fig. 2-9-B
Fig. 2-10
DISASSEMBLY INSTRUCTIONS
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
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.
P5 Spring
P5-3 Arm Ass'y
1
2
Cassette Opener
2
Pinch Roller Block
Pinch Roller Arm Spring
Pinch Roller Lever Ass'y
Main Chassis
Fig. 2-11
(3)
(1)
2
2
(2)
1
• Screw Torque: 4 ± 0.5kgf•cm (Screw 1)
2
Spring Position
A/C Head
A/C Head Spring
A/C Head Base
Fig. 2-13-A
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.
• Screw Torque: 5 ± 0.5kgf•cm
Fig. 2-12-A
FE Head
• The FE Head is not installed on the Video Cassette Player.
• Screw Torque: 4 ± 0.5kgf•cm
1
Fig. 2-14
DISASSEMBLY INSTRUCTIONS
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
Cylinder Unit Ass'y
2
(2)
• Screw Torque: 3 ± 0.5kgf•cm
(1)
2
2
(3)
1
Fig. 2-15
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.
1
Middle Gear
E-Ring
Main Cam
Pinch Roller Cam
2
Joint Gear
P5 Cam
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
Check the hole of Main
Chassis can be seen.
Marker
Main Cam
P5 Cam
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 and Pinch Roller Cam.
Remove the Polyslider Washer 2, then remove the
3.
Joint Gear.
Fig. 2-17-B
2-18: CLUTCH ASS'Y (Refer to Fig. 2-18)
Remove the Polyslider Washer 1.
1.
Remove the Clutch Ass'y, Ring Spring and Coupling
2.
Gear.
Unlock the 2 supports 2 and remove the Clutch Lever.
3.
1
Clutch Ass'y
Ring Spring
Coupling Gear
Clutch Lever
2
2
Fig. 2-18
DISASSEMBLY INSTRUCTIONS
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.
Remove the Capstan Brake Spring.
2.
Slide the Main Rod and remove the Capstan Brake
3.
Ass'y.
Remove the Main Rod, Tension Lever, Clutch Actuator,
4.
Idler Arm Ass'y.
Remove the screw 2.
5.
Remove the LED Reflecter.
6.
Remove the Loading Arm S Ass'y and Loading Arm T
7.
Ass'y.
8.
Remove the Loading Gear S and Loading Gear T.
9.
Remove the Loading Gear Spring.
Capstan Brake Spring
Main Rod
Idler Arm Ass'y
LED Reflecter
Clutch Actuator
Capstan Brake Ass'y
2
1
Main Loading Gear
Tension Lever
Loading Gear T
Loading Gear
Spring
Loading Arm T Ass'y
Loading Gear S
Loading Gear
Spring
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)
Unlock the support 1 and remove the P4 Cover.
1.
Remove the screw 2.
2.
Unlock the support 3 and remove the Loading Gear
3.
Holder.
Remove the Inclined S.
4.
Remove the Inclined T.
5.
Remove the 2 screws 4, then remove the Guide Roller.
6.
NOTE
Do not touch the roller of Guide Roller.
2
Loading Gear Holder
Guide Roller
3
Loading Arm S Ass'y
• Screw Torque: 5 ± 0.5kgf•cm
Fig. 2-19-A
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
4
Inclined S
• Screw Torque: 5 ± 0.2kgf•cm (Screw 2)
• Screw Torque: 0.7 ± 0.2kgf•cm (Screw 4)
Guide Roller
4
Inclined T
P4 Cover
1
Fig. 2-20
Fig. 2-19-B
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.)
NOTE
Confirm that there is no dirt, dust, etc. at the spot where
the cap was located.
Location of Anode Cap
Fig. 3-3
Screwdriver
Alligator Clip
GND on the CRT
Flip up the sides of the Rubber Cap in the direction of
2.
the arrow and remove one side of the support.
(Refer to Fig. 3-2.)
Rubber Cap
Support
CRT
Fig. 3-1
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. 3-2
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 for more than 2 seconds.
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 30 minutes before Power On or alternatively, discharge backup capacitor.
Set KeyRemocon KeyOperations
VOL. (-) MIN1
VOL. (-) MIN2
VOL. (-) MIN
VOL. (-) MIN4
VOL. (-) MIN5
VOL. (-) MIN6
VOL. (-) MIN7
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).
3
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".
Releasing of PROTECTION PASSWORD.
VOL. (-) MIN8
VOL. (-) MIN9
MethodOperations
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 SER VICE 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 30 minutes before Power On or alternatively, discharge backup capacitor.
1.
Set the VOLUME to minimum.
2.
Press both VOL. DOWN button on the set and the Channel button (6) on the remote control for more than 2 seconds.
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
Wrap a piece of chamois around your finger. Dip it in
isopropyl alcohol and clean the audio control head by
wiping it horizontally. Clean the full erase head in the
same manner. (Refer to the figure below.)
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.
Audio Control Head
Cylinder Head
NOTE FOR THE REPLACING OF MEMORY IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE 1.
NOTE:
Initial Data setting will not be possible if clock has been set. To reset clock, either unplug AC cord and allow
at least 30 minutes before Power On or alternatively, discharge backup capacitor.
+0+1+2+3+4+5+6+7+8+9
401E07806A020027C001
05
D06365660640000500
10
206800005F05C0
010B0100046A00F577A0
3001F00E00016C
52F000000000005F01F0
4021000000000000
2B1550A0C42008BF10
Table 1
Enter DATA SET mode by setting VOLUME to minimum.
1.
While holding down VOLUME button on front cabinet, press key 6 on remote control for more than 2 seconds.
2.
ADDRESS and DATA should appear as FIG 1.
ADDRESSDATA
+A
+B+C+D+E+FINI
1231040D404200
180000000000
INIT 00 83
POWER ON
PLAY/REC
3.
ADDRESS is now selected and should "blink". Using the PLAY or STOP button on the remote, step through the
ADDRESS until required ADDRESS to be changed is reached.
4.
Press ENTER to select DATA. When DATA is selected, it will "blink".
5.
Again, step through the DATA using PLAY or STOP button until required DATA value has been selected.
6.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
7.
Repeat steps 3 to 6 until all data has been checked.
8.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
The unit will now have the correct DATA for the new MEMORY IC.
VSR Torque, Brake Torque (S Reel)
X Value Adjustment
Reel Disk Height Adjustment
Used to connect the test point of SERVICE and GROUNDJG154
Used to connect the Syscon PCB and Main PCBJG162A/JG162F
Used to connect the Syscon PCB and CRT PCBJG162Y
PREPARATION FOR SERVICING
How to use the Servicing Fixture
1.
Unplug the connector CP351, CP757 and CP302, then remove the TV/VCR Block from the set.
2.
Unplug the connector CP810, CP820 and CP850, then remove the Main PCB from the VCR Block.
3.
Connect as shown in the below figure using the Service Fixture.
• Connect the Syscon PCB to the Main PCB with the cable JG162A and JG162F.
• Connect the Syscon PCB to the CRT PCB with the cable JG162Y.
4.
Remove the Operation PCB from the set, then connect it with the Syscon PCB.
If necessary, connect CP351. (Front A/V Jack Input Terminal)
5.
Short circuit between TP1001 and GND with the cable JG154.
(The EOT, BOT and Reel Sensor do not work at this moment.)
6.
At that time, the STOP/EJECT button is available to insert and eject the Cassette Tape.
Front Cabinet
Syscon PCB
TP1001
CD810
CD850
CRT PCB
CP850
Main PCB
CP820
JG162Y
CP810
JG162F
JG162A
CP502
CP757
To Ground
JG154
CD352
Operation PCB
MECHANICAL ADJUSTMENTS
1. CONFIRMATION AND ADJUSTMENT
Read the following NOTES before starting work.
••Place an object which weighs between 450g~500g on
the Cassette Tape to keep it steady when you want to
make the tape run without the Cassette Holder. (Do not
place an object which weighs over 500g.)
When you activate the deck without the Cassette Holder,
short circuit between TP1001 and GND. (Refer to
ELECTRICAL ADJUSTMENT PARTS LOCATION
GUIDE) In this condition the BOT/EOT/Reel Sensor will
not function.
CONFIRMATION AND ADJUSTMENT OF REEL
1-1:
DISK HEIGHT
1.
Turn on the power and set to the STOP mode.
2.
Set the master plane (JG022) and reel disk height
adjustment jig (JG024A) on the mechanism framework,
taking care not to scratch the drum, as shown in Fig. 1-1-A.
3.
Confirm that "A" of the reel disk is lower than "B" of the
reel disk height adjustment jig (JG024A), and is higher
than "C". If it is not enough height, adjust to 10(+0.2, -0)
mm with the height adjustment washer.
4.
Adjust the other reel in the same way.
Master Plane (JG022)
1-2: CONFIRMATION AND ADJUSTMENT OF TENSION
POST POSITION
1.
Set to the PLAY mode.
2.
Adjust the Tension Adjust until the edge of the Tension
Arm is positioning within 0.5mm range from the
standard line center of Main Chassis.
After this adjustment, confirm that the cut position is
located in "A" area as shown in Fig. 1-2-B. If it is
located in "B" area, adjust again.
3.
While turning the S Reel clockwise, confirm that the
edge of the Tension Arm is located in the position
described above.
Standard line of Main Chassis
Tension Arm
0.5mm (Adjusting range)
Standard line center of Main Chassis
Tension Adjust
Fig. 1-2-A
Master Plane (JG022)
10(+0.2, -0)mm
Reel Disk Height Adjustment Jig
(JG024A)
Reel Disk
Height Adjustment
Washer
2.6x4.7xT0.13
2.6X4.7xT0.25
Reel Disk Height
Adjustment Jig
(JG024A)
(B)
(A)
Fig. 1-1-A
(C)
Fig. 1-1-B
(A)
Cut Position
(B)
Tension Adjust
Fig. 1-2-B
1-3: CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAYBACK
Load a video tape (E-180) recorded in standard speed
1.
mode. Set the unit to the PLAY mode.
Install the tentelometer as shown in Fig. 1-3. Confirm that
2.
the meter indicates 20 ± 2gf in the beginning of playback.
• USING A CASSETTE TYPE TORQUE TAPE (KT-300NR)
1.
After confirmation and adjustment of Tension Post
position (Refer to item 1-2), load the cassette type
torque tape (KT-300NR) and set to the PLAY mode.
2.
Confirm that the right meter of the torque tape indicates
60~110gf•cm during playback in SP mode.
3.
Confirm that the left meter of the torque tape indicates
25~40gf•cm during playback in SP mode.
Tentelometer
Video Tape
P1 Post
Guide Roller
Fig. 1-3
MECHANICAL ADJUSTMENTS
1-4: CONFIRMATION OF VSR TORQUE
Operate within 4~5 seconds after the reel disk begins to
1.
turn.
Install the Torque Gauge (JG002F) and Adapter (JG002B)
2.
on the S Reel. Set to the Rewind mode. (Refer to Fig.1-4)
Then, confirm that it indicates 120~180gf•cm.
3.
NOTE
Install the Torque Gauge on the reel disk firmly. Press the
REW button to turn the reel disk.
1-5: CONFIRMATION OF REEL BRAKE TORQUE
(S Reel Brake) (Refer to Fig. 1-4)
Set to the STOP mode.
1.
Move the Idler Ass'y from the S Reel.
2.
Install the Torque Gauge (JG002F) and Adapter
3.
(JG002B) on the S Reel. Turn the Torque Gauge
(JG002F) clockwise.
Then, confirm that it indicates 60~100gf•cm.
4.
(T Reel Brake) (Refer to Fig. 1-4)
Set to the STOP mode.
1.
Move the Idler Ass'y from the T Reel.
2.
Install the Torque Gauge (JG002E) and Adapter
3.
(JG002B) on the T reel. Turn the Torque Gauge
(JG002E) counterclockwise.
Then, confirm that it indicates 45~70gf•cm.
4.
Torque Gauge/Adapter
(JG002F/JG002B)
2. CONFIRMATION AND ADJUSTMENT
OF TAPE RUNNING MECHANISM
Tape Running Mechanism is adjusted precisely at the
factory. Adjustment is not necessary as usual. When you
replace the parts of the tape running mechanism because
of long term usage or failure, the confirmation and
adjustment are necessary.
2-1: GUIDE ROLLER
Playback the VHS Alignment Tape.
1.
Connect CH-1 of the oscilloscope to TP4002(Envelope)
2.
and CH-2 to TP4001(SW Pulse).
Press and hold the Tracking-Auto button on the remote
3.
control more than 2 seconds to set tracking to center.
Trigger with SW Pulse and observe the envelope. (Refer
4.
to Fig. 2-1-A)
When observing the envelope, adjust the Taper Nut
5.
Driver slightly until the envelope will be flat.
Even if you press the Tracking Button, adjust so that
flatness is not moved so much.
Adjust so that the A : B ratio is better than 3 : 2 as shown
6.
in Fig. 2-1-B, even if you press the Tracking Button to
move the envelope (The envelope waveform will begin to
decrease when you press the Tracking Button).
Adjust the PG shifter during playback.
7.
(Refer to the ELECTRICAL ADJUSTMENTS)
NOTE
After adjustment, confirm and adjust A/C head.
(Refer to item 2-2)
Torque Gauge/Adapter
(JG002E/JG002B)
S Reel
T Reel
Fig. 1-4
NOTE
If the torque is out of the range, replace the following
parts.
Check item
1-4
1-5
Replacement Part
Idler Ass'y/Clutch Ass'y
T Brake Spring/Tension Spring
Envelope
CH-3
Audio
Max
CH-1
Envelope
(TP4002)
CH-1
CH-2
Track
Track
CH-2
SW Pulse (TP4001)
(1)
(2)
EntranceExit
A
B
A : B = 3 : 2
Fig. 2-1-A
Max
Fig. 2-1-B
MECHANICAL ADJUSTMENTS
CONFIRMATION AND ADJUSTMENT OF AUDIO/
CONTROL HEAD
When the Tape Running Mechanism does not work well,
adjust the following items.
1.
Playback the VHS Alignment Tape.
2.
Confirm that the reflected picture of stamp mark is
appeared on the tape prior to P4 Post as shown in Fig.2-2-A.
When the reflected picture is distorted, turn the screw
a)
1 clockwise until the distortion is disappeared.
When the reflected picture is not distorted, turn the
b)
screw 1 counterclockwise until little distortion is
appeared, then adjust the a).
3.
Turn the screw 2 to set the audio level to maximum.
4.
Confirm that the bottom of the Audio/ Control Head and
the bottom of the tape is shown in Fig. 2-2-C.
When the height is not correct, turn the screw 3 to
c)
adjust the height. Then, adjust the 1~3 again.
Audio/Control Head
Reflected picture of
Stamp Mark
P4 Post
2-3:2-2:
TAPE RUNNING ADJUSTMENT
(X VALUE ADJUSTMENT)
Confirm and adjust the height of the Reel Disk.
1.
(Refer to item 1-1)
Confirm and adjust the position of the Tension Post.
2.
(Refer to item 1-2)
Adjust the Guide Roller. (Refer to item 2-1)
3.
Confirm and adjust the Audio/Control Head.
4.
(Refer to item 2-2)
Connect CH-1 of the oscilloscope to TP4002, CH-2 to
5.
TP4001 and CH-3 to HOTsideofAudioOutJack.
Playback the VHS Alignment Tape.
6.
Press and hold the Tracking-Auto button on the remote
7.
control more than 2 seconds to set tracking to center.
Set the X Value adjustment driver (JG153) to the 4 of
8.
Fig. 2-2-B. Adjust X value so that the envelope waveform
output becomes maximum. Check if the relation between
Audio and Envelope waveform becomes (1) or (2) of Fig.2-1-A.
3
2
Audio/Control Head
Tape
Stamp Mark
Audio/Control Head
Fig. 2-2-A
1
4
Fig. 2-2-B
0.25±0.05mm
Fig. 2-2-C
MECHANICAL ADJUSTMENTS
3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
4
3
2
5
6
7
1
10
1. Tension Adjust
2. Tension Arm
3. Guide Roller
4. P1 Post
5. Audio/Control Head
6.
X value adjustment driver hole
7.
P4 Post
8.
T Brake Spring
9.
T Reel
10.
S Reel
9
8
ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
When replacing IC's or transistors, use only specified
silicon grease.
(To prevent the damage to IC's and transistors.)
On-Screen Display Adjustment
1.
Unplug the AC plug for more than 30 minutes to set the
clock to the non-setting state. (To release the Back-Up
immediately, take the short circuit between C1003 and
GND at the Power Off.) Then, set the volume level to
minimum.
2.
Press the VOL. DOWN button on the set and the
channel button (9) on the remote control for more than
2 seconds to display adjustment mode on the screen
as shown in Fig. 1-1.
NOTE
Use the channel buttons (1-8) on the remote control to
select the options shown in Fig. 1-1.
Press the channel button (0) or MENU button on the
remote control to end the adjustments.
1. H/V
2. AKB
3. COLOR TEMP
4. PICTURE
5. OTHERS
6. TEST PATTERN
7.
8. 0. END
Fig. 1-1
2. BASIC ADJUSTMENTS
(VCR SECTION)
2-1: PG SHIFTER
1.
Connect CH-1 on the oscilloscope to TP4001 and CH-2
to pin 7 of CP603.
2.
Playback the alignment tape.
3.
Press and hold the Tracking-Auto button on the remote
control more than 2 seconds to set tracking to center.
4.
Press the VOL. DOWN button on the set and the
channel button (3) on the remote control simultaneously
until the indicator REC disappears. If the indicator REC
disappears, adjustment is completed.
(If the above adjustments doesn't work well:)
5.
Press the VOL. DOWN button on the set and the
channel button (3) on the remote control simultaneously
until the indicator REC disappears.
6.
When the REC indicator is blinking, press both VOL.
DOWN button on the set and the channel button (4) on
the remote control simultaneously and adjust the
Tracking +/- button until the arising to the down of Head
Switching Pulse becomes 6.5 ± 0.5H.
(Refer to Fig. 2-1-A, B)
7.
Press the Tracking Auto button.
CH-2
6.5H
CH-1
Fig. 2-1-A
CH-2
CH-1
6.5H
Fig. 2-1-B
2-2: VCO
1.
Place the set with Aging Test for more than 10 minutes.
2.
Connect the oscillator (39.5MHz) to pin 11 of TU601
through 100 Ω resistor.
3.
Connect the digital voltmeter between the pin 47 ofIC601.
4.
Adjust the L608 until the digital voltmeter is 3.8 ± 0.05V.
2-3: RF AGC
1.
Receive the UHF (80dB).
2.
Connect the digital voltmeter between the pin 5 ofCP603 and the pin 1 (GND) of CP603.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (5) on the remote control to
select "OTHERS". The Fig. 2-2 appears on the display.
4.
Press the channel button (1) on the remote control to
select "RF AGC DELAY".
5.
Press the PLAY or STOP button on the remote control
until the digital voltmeter is 2.5 ± 0.05V.
1. RF AGC DELAY
2. VIDEO LEVEL
3. FM LEVEL
4. OSD H
5. CUT OFF
6. (VOL TEST)
7.
8. 0. RETURN
Fig. 2-2
ELECTRICAL ADJUSTMENTS
(TV SECTION)
2-4: CONSTANT VOLTAGE
Connect the digital voltmeter to TP401.
1.
Set condition is AV MODE without signal.
2.
Adjust the VR502 until the DC voltage is 135 ± 0.5V.
3.
2-5: CUT OFF
1.
Place the set with Aging Test for more than 15 minutes.
2.
Set condition is AV MODE without signal.
3.
Using the remote control, set the brightness and
contrast to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (5) on the remote control to
select "OTHERS". The Fig. 2-2 appears on the display.
5.
Press the channel button (5) on the remote control to
select "CUT OFF".
6.
Adjust the Screen Volume until a dim raster is obtained.
2-6: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1.
Place the set with Aging Test for more than 15 minutes.
2.
Receive the white 100% signal from the Pattern
Generator.
3.
Using the remote control, set the brightness and
contrast to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (2) on the remote control to
select "AKB". The Fig. 2-3 appears on the display.
5.
Press the channel button (2) on the remote control to
select the "R.BIAS".
6.
Using the PLAY or STOP button on the remote control,
adjust the R.BIAS.
7.
Press the CH. UP/DOWN button on the remote control
to select the "G.BIAS", "B.BIAS", "R.DRIVE",
"G.DRIVE" or "B.DRIVE".
8.
Using the PLAY or STOP button on the remote control,
adjust the G.BIAS, B.BIAS, R.DRIVE, G.DRIVE or
B.DRIVE.
9.
Perform the above adjustments 7 and 8 until the white
color is looked like a white.
1.
2. R.BIAS
3. G.BIAS
4. B.BIAS
5. R.DRIVE
6. G.DRIVE
7. B.DRIVE
8. 0. RETURN
2-8: HORIZONTAL PHASE
1.
Receive the center cross signal from the Pattern
Generator.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
4.
Press the channel button (1) on the remote control to
select "H. PHASE".
5.
Press the PLAY or STOP button on the remote control
until the vertical line becomes fit to the notch of the
shadow mask.
1. H. PHASE
2. H. BLK
3. V. SIZE 50/60
4. V. POSI 50/60
5. V. LIN 50/60
6. V. SC 50/60
7. V. COMP
8. (H FREQ) 0. RETURN
Fig. 2-4
2-9: VERTICAL SIZE
NOTE: Adjust after performing adjustments in section 2-8.
1.
Receive the cross hatch signal from the Pattern
Generator.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
4.
Press the channel button (3) on the remote control to
select "V. SIZE 50/60".
5.
Press the PLAY or STOP button on the remote control
until the rectangle on the center of the screen becomes
square.
6.
Receive a broadcast and check if the picture is normal.
7.
Receive the cross hatch signal of NTSC. (Audio Video
Input)
8.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~5.
2-7: FOCUS
1.
Receive a broadcast.
2.
Turn the Focus Volume fully counterclockwise once.
3.
Adjust the Focus Volume until picture is distinct.
Fig. 2-3
ELECTRICAL ADJUSTMENTS
2-10: VERTICAL LINEARITY
NOTE: Adjust after performing adjustments in section 2-9.
1.
Receive the cross hatch signal from the Pattern
Generator.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
4.
Press the channel button (5) on the remote control to
select "V. LIN 50/60".
5.
Press the PLAY or STOP button on the remote control
until the SHIFT quantity of the OVER SCAN on upside
and downside becomes minimum.
6.
Receive the cross hatch signal of NTSC. (Audio Video
Input)
7.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~5.
2-11: VERTICAL POSITION
NOTE: Adjust after performing adjustments in section 2-10.
1.
Receive the center cross signal from the Pattern
Generator.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
4.
Press the channel button (4) on the remote control to
select "V. POSI 50/60".
5.
Press the PLAY or STOP button on the remote control
until the horizontal line becomes fit to the notch of the
shadow mask.
6.
Receive the center cross signal of NTSC. (Audio Video
Input)
7.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~5.
2-12: OSD HORIZONTAL
1.
Using the remote control, set the brightness and
contrast to normal position.
2.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (5) on the remote control to
select "OTHERS". The Fig. 2-2 appears on the display.
3.
Press the channel button (4) on the remote control to
select "OSD H".
4.
Press the PLAY or STOP button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-5)
2-13: SUB BRIGHTNESS
1.
Receive the monoscope pattern (80dB). (RF Input)
2.
Using the remote control, set the brightness to minimum
position and contrast to maximum position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-6 appears on the display.
4.
Press the channel button (1) on the remote control to
select "BRIGHT".
5.
Press the PLAY or STOP button on the remote control
until the white 25% is starting to be visible.
6.
Receive the monoscope pattern. (Audio Video Input)
7.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~5.
1. BRIGHT
2. CONTRAST
3. COLOUR
4. TINT
5. SHARPNESS
6. OSD CONT
7.
8. 0. RETURN
Fig. 2-6
2-14: SUB COLOR
1.
Receive the color bar pattern. (RF Input)
2.
Using the remote control, set the brightness, contrast
and color to normal position.
3.
Connect the synchro scope to TP801.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (4) on the remote control to
select "PICTURE". The Fig. 2-6 appears on the display.
5.
Press the channel button (3) on the remote control to
select "COLOR".
6.
Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 4 scales on the screen of the oscilloscope.
7.
Press the PLAY or STOP button on the remote control
until the red color level is adjusted to 95% of the white
level. (Refer to Fig. 2-7)
8.
Receive the color bar pattern. (Audio Video Input)
9.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~7.
White 0%
0%
[ TV ]
OSD H
AB
Fig. 2-5
Red Level
White 100%
95%
Fig. 2-7
ELECTRICAL ADJUSTMENTS
3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE
(VCR SECTION)
TP1001
C1003
TP4002
TP4001
L608
IC601
TU601
CP603
J4501
SYSCON PCB
(TV SECTION)
ELECTRICAL ADJUSTMENTS
J801
TP801
CRT PCB
VR502
T501
FOCUS VOLUME
SCREEN VOLUME
FB401
TP401
MAIN PCB
ELECTRICAL ADJUSTMENTS
4.PURITY AND CONVERGENCE
ADJUSTMENTS
NOTE
1.
Turn the unit on and let it warm up for at least 30
minutes before performing the following adjustments.
2.
Place the CRT surface facing east or west to reduce the
terrestrial magnetism.
3.
Turn ON the unit and demagnetize with a Degauss Coil.
4-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)
1.
Tighten the screw for the magnet. Refer to the adjusted
CRT for the position. (Refer to Fig. 4-1)
If the deflection yoke and magnet are in one body,
untighten the screw for the body.
2.
Receive the green raster pattern from the color bar
generator.
3.
Slide the deflection yoke until it touches the funnel side
of the CRT.
4.
Adjust center of screen to green, with red and blue on
the sides, using the pair of purity magnets.
5.
Switch the color bar generator from the green raster
pattern to the crosshatch pattern.
6.
Combine red and blue of the 3 color crosshatch pattern
on the center of the screen by adjusting the pair of 4
pole magnets.
7.
Combine red/blue (magenta) and green by adjusting the
pair of 6 pole magnets.
8.
Adjust the crosshatch pattern to change to white by
repeating steps 6 and 7.
4-2: PURITY
NOTE
Adjust after performing adjustments in section 4-1.
1.
Receive the green raster pattern from color bar
generator.
2.
Adjust the pair of purity magnets to center the color on
the screen.
Adjust the pair of purity magnets so the color at the
ends are equally wide.
3.
Move the deflection yoke backward (to neck side)
slowly, and stop it at the position when the whole screen
is green.
4.
Confirm red and blue colors.
5.
Adjust the slant of the deflection yoke while watching
the screen, then tighten the fixing screw.
300BZ610065A57002N420ADECK ASSYA57002N420A
301BZ71007385OA500022AHC ASS'Y
302BZ71019385OP200290BELT,CAPSTAN (S)
303BZ71013285OP900710LEVER,REC
304BZ71009485OP500083BASE,AC HEAD
305BZ71011285OP800324SPRING,AC HEAD
306BZ71019485OA000367MAIN CHASSIS ASS'Y (S-Z)
307BZ71019585OA200082CLUTCH ASS'Y(S2)
308BZ71019685OA200080ARM,IDLER ASS'Y (S)
309BZ71019785OP600556ARM,SS BRAKE (S)
310BZ71019885OP200292REEL,T (S)
311BZ71006385OA300061LOADING ARM S ASS'Y
312BZ71006485OA300062LOADING ARM T ASS'Y
313BZ71019985OA400209GUIDE ROLLER ASS'Y
314BZ71006985OA400188BASE,INCL S ASS'Y
315BZ71007085OA400196BASE,INCL T(S) ASS'Y
316BZ71020085OA400199P5-3 ARM ASS'Y(S)
317BZ71007285OA400205PINCH ROLLER BLOCK
318BZ71006585OA400175TENSION ARM ASS'Y
319BZ71020185OA400184TENSION BAND ASS'Y (S)
320BZ71006785OA400178PINCH ROLLER LEVER ASS'Y
321BZ71020285OA600188BRAKE T ASS'Y (S)
322BZ71020385OA600191CAP BRAKE ASS'Y(S)
323BZ71007685OA900213LINK ASS'Y
324BZ71007785OA900216LINK LEVER ASS'Y
325BZ71020485OP200284LEVER,CLUTCH (S)
326BZ71020585OP200285ACTUATOR,CLUTCH
327BZ71020685OP200298GEAR,COUPLING(S2)
328BZ71020785OP200291REEL,S (S)
329BZ71009685OP600541WORM
330BZ71010585OP600563BRACKET,MOTOR
331BZ71008685OP300178GEAR,MAIN LOADING
332BZ71008785OP300179GEAR,LOADING S
333BZ71008885OP300180GEAR,LOADING T
334BZ71020885OP300187HOLDER,LOADING GEAR (S-Z)
335BZ71009085OP400472ADJUST,TENSION
336BZ71009385OP400492HOLDER,TENSION
337BZ71009285OP400490LEVER,TENSION
338BZ71009185OP400475COVER,P4
339BZ71009785OP600543GEAR,JOINT
340BZ71009885OP600544GEAR,MIDDLE
341BZ71020985OP600554CAM,MAIN (S)
342BZ71010185OP600546CAM,P5
343BZ71017285OP600565CAM,PINCH ROLLER
344BZ71021085OP600561ROD,MAIN(S)
345BZ71010685OP700035REFLECTOR,LED
346BZ71010785OP800318SPRING,LOADING GEAR
347BZ71021185OP800334SPRING,P5 (S)
348BZ71021285OP800335SPRING,BRAKE T (S)
349BZ71011085OP800322SPRING,TENSION
350BZ71021385OP800336SPRING,CAP BRAKE (S)
351BZ71011885OP800342SPRING,LOCKER (S)
352BZ71011385OP800326SPRING,LINK
353BZ71011485OP800328SPRING,DAMPER
354BZ71011585OP800330SPRING,RING
355BZ71021485OP800337SPRING,SS BRAKE (S)
356BZ71011985OP900680OPENER,CASS
357BZ71021585OP900704CASS SIDE L
358BZ71012185OP900684CASS SIDE R
359BZ71013185OP900709TAPE GUIDE L (P,R)
360BZ71012285OP900686TAPE GUIDE R
361BZ71021685OP900714COVER,SENSOR L3
362BZ71012385OP900688LEVER,FLAP
363BZ71012485OP900690CASS HOLDER
364BZ71009585OP600540DRIVER,WORM
365BZ71021785OP900713LOCKER,R2
366BZ71012785OP900694SPRING,PACK
367BZ71012885OP900695BRACKET,TOP
368BZ71012985OP900696SPRING,CASS EARTH
369BZ71011785OP800341SPRING,P/R ARM