Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause/Eject/Tape In (Symbol Mark)
Auto Tracking/Manual TrackingYes
Caption / TextYes
Index
MutingYes
Hi-Fi
RepeatYes
Zero Return
DEW
G-10OSD LanguageEnglish French Spanish
G-11Clock,Timer Calendar1990/1/1 ~ 2081/12/31
and TimerTimer Events 8 Program/ 1 Month
Back-upOne Touch Recording Max Time5 Hours
OTPB Valid Time
Sleep TimerMax Time120
On/Off TimerProgram(On Timer / Off Timer)1
Auto Shut OffNo Signal15
Timer Back-up (at Power Off Mode)5
G-12RemoteUnitRC-CG
ControlGlow in Dark RemoconYes
Power SourceVoltage(D.C)3V
Total Keys41
KeysPowerYes
Timer Rec SetYes
Channel SetupYes
TV/CATVYes
Auto CH MemoryYes
Add/ DeleteYes
Guide CH Set
Auto TrackingYes
HQ (VHS Standard High Quality)Yes
Auto Power On, Auto Play, Auto Rewind, Auto EjectYes
VIDEO PLUS+(SHOWVIEW,G-CODE)
Auto ClockYes
Forward / Reverse Picture SearchYes
Reverse Slow
One Touch Playback
Auto CH MemoryYes
Closed CaptionYes
TV Auto Shut off FunctionYes
End Call
Index Search
SQPB
CATVYes
CM Skip(30sec x 6 Times)Yes
Comb Filter
TV MonitorYes
Program Extend
Choke Coil
Energy StarYes
Protect of FBT Leak Curcuit
Dirty Head
V-chipUSA V-chipYes
Antenna Change Plug
DC Car Cord (Center+)
AC Plug Adapter
AC Cord
AV Cord (2Pin-1Pin)
Guarantee CardYes
Registration Card
ESP Card
Warning Sheet
Dew/AHC Caution Sheet
Quick Set-up Sheet
Circuit Diagram
Service Facility List
Important Safeguard
G-15InterfaceSwitchPowerYes
G-16Set SizeApprox. W x D x H (mm)362 x 370.5 x 382
G-17WeightNet (Approx.)11.0
G-18CartonMaster Carton
G-19Cabinet MaterialCabinet FrontPS94V0/DECABROM
Informatin Sheet
PlayYes
Pause/Still
System Select
One Touch Playback
Channel UpYes
Channel DownYes
F.FWD/CueYes
Eject/StopYes
Main Power SW
Volume UpYes
Volume DownYes
Rew/RevYes
Rec/OTRYes
IndicatorPower
Key Light upRec/OTR
TerminalsFrontVideo InputRCA x 1
RearVideo Input
Gift BoxYes
Drop TestNatural Dropping At
Container Stuffing(40' container)700
Input Select
Rec/OTRRed
T-RecRed
On Timer
CS
One Touch Playback
Play
Audio InputRCA x 1
Other TerminalHead Phone(Stereo & Mono, 3.5mm)
Audio Input
Video Output
Audio Output
Euro Scart
Diversity
Ext Speaker W Im
DC Jack 12V(Center +)
VHF/UHF Antenna Input
AC Inlet
Gross (Approx.)12.5
Content-
Material-
Dimensions W x D x H(mm)-
Description of Origin-
MaterialDouble/White
Dimensions W x D x H(mm)423 x 447 x 443
DesignAs per Buyer's
Description of OriginYes
Height (cm)62
Cabinet RearPS94V0/DECABROM
F Type
1 Corner / 3 Edges / 6 Surfaces
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
(24.3 lbs)
(27.6 lbs)
No
Sets
A3-4
Page 7
DISASSEMBLY INSTRUCTIONS
1.REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1: BACK CABINET (Refer to Fig. 1-1)
1.
Remove the 4 screws 1.
2.
Remove the 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
2
1
3
Back Cabinet
1
1-2: CRT PCB (Refer to Fig. 1-2)
CAUTION:BEFORE REMOVING THE ANODE CAP,
DISCHARGE ELECTRICITY BECAUSE IT
CONTAINS HIGH VOLTAGE.
BEFORE ATTEMPTING TO REMOVE OR
REPAIR ANY PCB, UNPLUG THE POWER
CORD FROM THE AC SOURCE.
1.
Remove the Anode Cap.
(Refer to REMOVAL OF ANODE CAP)
2.
Disconnect the following connectors:
(CP801 and CP851).
3.
Remove the CRT PCB in the direction of arrow.
CRT PCB
Front Cabinet
Fig. 1-1
1-3: TV/VCR BLOCK (Refer to Fig. 1-3)
1.
Remove the 2 screws 1.
2.
Disconnect the following connectors:
(CP757, CP353, CP401 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
Fig. 1-3
1-4:DECK CHASSIS AND SYSCON PCB
(Refer to Fig. 1-4)
1.
Remove the screw 1.
2.
Remove the screw 2.
3.
Remove the screw 3.
4.
Remove the 3 screws 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
4
3
2
4
4
Deck Shield Plate
Fig. 1-2
B1-1
Deck Chassis
(A)
5
(B)
Syscon PCB
Deck Holder
Fig. 1-4
Page 8
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Extend the 2 supports 1.
1.
Slide the 2 supports 2 and remove the Top Bracket.
2.
NOTE
1. After the installation of the Top Bracket, bend the
support 1 so that the Top Bracket is fixed.
Top Bracket
1
Top Bracket
2
Main Chassis
2
Main Chassis
2-2: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-2)
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
1
Fig. 2-1
Locker R
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.
Locker R
Check if these
Cassette Side R
positions are locked.
Fig. 2-3-B
2-4: LINK UNIT (Refer to Fig. 2-4)
Set the Link Unit to the Eject position.
1.
Unlock the support 1.
2.
Remove the (A) side of the Link Unit first, then remove
3.
the (B) side.
Main Chassis
Link Unit
Link Ass'y
Cassette Side L
Main Chassis
Fig. 2-2
2-3: CASSETTE SIDE L/R (Refer to Fig. 2-3-A)
Remove the Locker Spring.
1.
Unlock the 4 supports 1 and then remove the Cassette
2.
Side L/R.
Unlock the support 2 and then remove the Locker R.
3.
Locker Spring
1
1
2
Cassette Holder
Locker R
1
1
(A)
1
(B)
Link Unit
Main Chassis
2-5: LINK LEVER/FLAP LEVER (Refer to Fig. 2-5)
Remove the Link Lever.
1.
Remove the Flap Lever.
2.
Flap Lever
Link Lever
Fig. 2-4
Fig. 2-5
Cassette Side R
Cassette Side L
Fig. 2-3-A
B2-1
Page 9
DISASSEMBLY INSTRUCTIONS
2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A)
Remove the screw 1.
1.
Remove the Loading Motor.
2.
Remove the Worm.
3.
Loading Motor
Worm
Main Chassis
• Screw Torque: 3 ± 0.5kgf•cm
1
Fig. 2-6-A
NOTE
1. In case of the Worm installation, check if the value of
the Fig. 2-6-B is correct.
19.2 ± 0.1mm
1
Tension Connect
Tension Spring
2
4
1
3
Tension Holder
Tension Band
Tension Arm Ass'y
Fig. 2-7-B
NOTE
1.
In case of the Tension Band installation, note the
direction of the installation. (Refer to Fig. 2-7-C)
2.
In case of the Tension Band installation, install correctly
as Fig. 2-7-D.
3.
In case of the Tension Connect installation, install as
the circled section of Fig. 2-7-E.
Safety surface for pressing
of the insert.
Fig. 2-6-B
2-7: TENSION ASS'Y (Refer to Fig. 2-7-B)
Turn the Pinch Roller Cam clockwise so that the
1.
Tension Holder hook is set to the position of Fig. 2-7-A
to move the Tension Arm Ass'y.
Remove the Tension Spring.
2.
Unlock the 2 supports 1 and remove the Tension
3.
Band.
Unlock the support 2 and remove the Tension Arm
4.
Ass'y.
Unlock the support 3 and remove the Tension
5.
Connect.
Float the hook 4 and turn it clockwise then remove the
6.
Tension Holder.
Tension Arm Ass'y
Tension Connect
[OK]
[NG]
Tension Connect
Tension Connect
Tension Connect
Main Chassis
Tension Band
Fig. 2-7-C
Tension Band
Tension Band
Fig. 2-7-D
Fig. 2-7-E
Fig. 2-7-A
B2-2
Page 10
DISASSEMBLY INSTRUCTIONS
2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A)
Remove the T Brake Spring.
1.
Turn the T Brake Arm clockwise and bend the hook
2.
section to remove it.
Unlock the 2 supports 1 and remove the T Brake
3.
Band.
Idler Gear
Idler Arm Ass'y
S Reel
T Brake Band
Hook section
1
1
T Brake Arm
T Brake Spring
Fig. 2-8-A
NOTE
1. In case of the T Brake Band installation, install correctly
as Fig. 2-8-B.
[OK]
T Brake Band
[NG]
T Brake Band
T Brake Arm
T Brake Arm
(A)T Reel
1
(A)
1
Fig. 2-9-A
NOTE
1.2.In case of the S Reel and T Reel installation, check if
the correct parts are installed. (Refer to Fig. 2-9-B)
In case of the Idler Arm Ass'y installation, install
correctly as Fig. 2-9-C.
Fig. 2-8-B
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.
1.
Remove the 2 Polyslider Washers 1.
2.
Remove the Idler Arm Ass'y and Idler Gear.
3.
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. 2-9-A) Do not adhere the stains
on it.
When you install the reel, clean the shaft and grease it
5.
(MG-33). (If you do not grease, noise may be heard in
FF/REW mode.)
After installing the reel, adjust the height of the reel.
6.
(Refer to MECHANICAL ADJUSTMENT)
[OK]
[NG]
Clutch Gear
Clutch Gear
Big Hole
(S Reel)
Small Hole
(T Reel)
Fig. 2-9-B
Idler Arm Ass'y
Idler Arm Ass'y
Fig. 2-9-C
B2-3
Page 11
DISASSEMBLY INSTRUCTIONS
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
1.
Opener.
Remove the Pinch Roller Block and P5 Arm Ass'y.
2.
1
Cassette Opener
Pinch Roller Block
P5 Arm Ass'y
Main Chassis
Fig. 2-10-A
NOTE
Do not touch the Pinch Roller. (Use gloves.)
1.
In case of the Pinch Roller Block and the Pinch Roller
2.
Cam installation, install correctly as Fig. 2-10-B.
(3)(1)
2
2
(2)
1
• Screw Torque: 5 ± 0.5kgf•cm (Screw 1)
Spring Position
2
A/C Head
A/C Head Spring
A/C Head Base
Fig. 2-11-A
Fig. 2-11-B
2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12)
Remove the screw 1.
1.
Remove the FE Head.
2.
Pinch Roller Block
P5 Arm Ass'y
Can be seen the hole of the
Main Cam.
Can be seen the hole of
the Pinch Roller Cam.
Fig. 2-10-B
2-11: A/C HEAD (Refer to Fig. 2-11-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
1.
Do not touch the A/C Head. (Use gloves.)
2.
When you install the A/C Head Spring, install as shown
in Fig. 2-11-B.
3.
When you install the A/C Head, tighten the screw (1)
first, then tighten the screw (2), finally tighten the screw
(3).
1
FE Head
• Screw Torque: 5 ± 0.5kgf•cm
• The FE Head is not installed on the Video Cassette Player.
Fig. 2-12
B2-4
Page 12
DISASSEMBLY INSTRUCTIONS
2-13:AHC ASS'Y/CYLINDER UNIT ASS'Y
(Refer to Fig. 2-13)
Unlock the support 1 and remove the AHC Ass'y.
1.
Disconnect the following connector:
2.
(CD2001)
Remove the 3 screws 2.
3.
Remove the Cylinder Unit Ass'y.
4.
NOTE
When you install the Cylinder Unit Ass'y, tighten the
1.
screws from (1) to (3) in order while pulling the Ass'y
toward the left front direction.
Cylinder Unit Ass'y
1
(3)
(2)
(1)
• Screw Torque: 3 ± 0.5kgf•cm
2
2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14)
Remove the Capstan Belt.
1.
Remove the 3 screws 1.
2.
Remove the Capstan DD Unit.
3.
2
2
AHC Ass'y
Fig. 2-13
2-15:
MAIN CAM/PINCH ROLLER CAM/JOINT GEAR
(Refer to Fig. 2-15-A)
Remove the E-Ring 1, then remove the Main Cam.
1.
Remove the E-Ring 2, then remove the Pinch Roller
2.
Cam and Joint Gear.
1
Main Cam
2
Pinch Roller Cam
Joint Gear
Fig. 2-15-A
NOTE
In case of the Pinch Roller Cam and Main Cam
1.
installation, install them as the circled section of Fig. 215-B so that the each markers are met. (Refer to Fig.
2-15-B)
Pinch Roller Cam
Marker
Main Cam
• Screw Torque: 4 ± 0.5kgf•cm
Capstan Belt
Capstan DD Unit
Fig. 2-15-B
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
1
1
1
Fig. 2-14
Main Rod
Tension Lever
Main Loading Gear
Loading Arm T Ass'y
Loading Arm S Ass'y
Fig. 2-16-A
B2-5
Page 13
DISASSEMBLY INSTRUCTIONS
NOTE
When you install the Loading Arm S Ass'y, Loading Arm
1.
T Ass'y and Main Loading Gear, align each marker.
(Refer to Fig. 2-16-B)
Marker
CASSETTE GUIDE POST/INCLINED BASE S/T
2-18:
UNIT/P4 CAP (Refer to Fig. 2-18-A)
Remove the P4 Cap.
1.
Unlock the support 1 and remove the Cassette Guide
2.
Post.
Remove the Inclined Base S Unit and Inclined Base T
3.
Unit.
Main Loading Gear
Marker
Loading Arm T Ass'y
2-17:
CLUTCH ASS'Y/RING SPRING/CLUTCH LEVER/
Loading Arm S Ass'y
CLUTCH GEAR (Refer to Fig. 2-17-A)
Remove the Polyslider Washer 1.
1.
Remove the Clutch Ass'y and Ring Spring.
2.
Remove the Clutch Lever.
3.
Remove the Coupling Gear, Coupling Spring and
4.
Clutch Gear.
1
Clutch Ass'y
Ring Spring
Coupling Gear
Coupling Spring
Clutch Lever
Fig. 2-16-B
Cassette Guide Post
Inclined Base T
Unit
P4 Cap
Inclined Base S
Unit
1
Fig. 2-18-A
NOTE
Do not touch the roller of Guide Roller.
1.
In case of the P4 Cap installation, install it with parallel
2.
for "A" and "B" of Fig. 2-18-B.
In case of the Cassette Guide Post installation, install
3.
correctly as the circled section of Fig. 2-18-C.
"A"
"B"
Clutch Gear
Fig. 2-17-A
NOTE
In case of the Clutch Ass'y installation, install it with
1.
inserting the spring of the Clutch Ass'y into the dent of
the Coupling Gear. (Refer to Fig. 2-17-B)
Clutch Ass'y
Coupling Gear
Fig. 2-17-B
B2-6
P4 Cap
[OK]
Cassette Guide Post
[NG]
Cassette Guide Post
Cassette Opener
Fig. 2-18-B
Fig. 2-18-C
Page 14
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
B3-1
Page 15
DISASSEMBLY INSTRUCTIONS
4.
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
REMOVAL
Put the Masking Tape (cotton tape) around the Flat
1.
Package IC to protect other parts from any damage.
(Refer to Fig. 4-1.)
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
When IC starts moving back and forth easily after
3.
desoldering completely, pickup the corner of the IC using
a tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 4-3.)
NOTE
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC
leads or solder lands under the IC when removing it.
Blower type IC
desoldering
machine
Masking Tape
(Cotton Tape)
Heat the IC leads using a blower type IC desoldering
2.
IC
machine. (Refer to Fig. 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.
Blower type IC
desoldering machine
Fig. 4-1
Tweezers
IC
Fig. 4-3
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
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
IC
Fig. 4-2
IC pattern
Fig. 4-4
B4-1
Page 16
DISASSEMBLY INSTRUCTIONS
INSTALLATION
Take care of the polarity of new IC and then install the
1.
new IC fitting on the printed circuit pattern. Then solder
each lead on the diagonal positions of IC temporarily.
(Refer to Fig. 4-5.)
Soldering Iron
Solder temporarily
Solder temporarily
Fig. 4-5
Supply the solder from the upper position of IC leads
2.
sliding to the lower position of the IC leads.
(Refer to Fig. 4-6.)
When bridge-soldering between terminals and/or the
4.
soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 4-8.)
Thin-tip Soldering Iron
IC
Fig. 4-8
Finally, confirm the soldering status on four sides of the
5.
IC using a magnifying glass.
Confirm that no abnormality is found on the soldering
position and installation position of the parts around the
IC. If some abnormality is found, correct by resoldering.
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, be always sure to replace the IC in this
case.
Soldering IronSolder
IC
Absorb the solder left on the lead using the Braided
3.
Supply soldering
from upper position
to lower position
Shield Wire. (Refer to Fig. 4-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
IC
Braided Shield Wire
Fig. 4-6
Fig. 4-7
B4-2
Page 17
A
A/C
ACC
AE
AFC
AFT
AFT DET
AGC
AMP
ANT
A.PB
APC
ASS'Y
AT
AUTO
A/V
B
BGP
BOT
BPF
BRAKE SOL
BUFF
B/W
C
C
CASE
CAP
CARR
CH
CLK
CLOCK (SY-SE)
COMB
CONV
CPM
CTL
CYL
CYL-M
CYL SENS
D
DATA (SY-CE)
dB
DC
DD Unit
DEMOD
DET
DEV
E
E
EF
EMPH
ENC
ENV
EOT
EQ
EXT
F
F
FBC
FE
FF
FG
FL SW
FM
FSC
FWD
G
GEN
GND
H
H.P.F
KEY TO ABBREVIATIONS
:
Audio/Control
:
Automatic Color Control
:
Audio Erase
:
Automatic Frequency Control
:
Automatic Fine Tuning
:
Automatic Fine Tuning Detect
:
Automatic Gain Control
:
Amplifier
:
Antenna
:
Audio Playback
:
Automatic Phase Control
:
Assembly
:
All Time
:
Automatic
:
Audio/Video
:
Burst Gate Pulse
:
Beginning of Tape
:
Bandpass Filter
:
Brake Solenoid
:
Buffer
:
Black and White
:
Capacitance, Collector
:
Cassette
:
Capstan
:
Carrier
:
Channel
:
Clock
:
Clock (Syscon to Servo)
:
Combination, Comb Filter
:
Converter
:
Capstan Motor
:
Control
:
Cylinder
:
Cylinder-Motor
:
Cylinder-Sensor
:
Data (Syscon to Servo)
:
Decibel
:
Direct Current
:
Direct Drive Motor Unit
:
Demodulator
:
Detector
:
Deviation
:
Emitter
:
Emitter Follower
:
Emphasis
:
Encoder
:
Envelope
:
End of Tape
:
Equalizer
:
External
:
Fuse
:
Feed Back Clamp
:
Full Erase
:
Fast Forward, Flipflop
:
Frequency Generator
:
Front Loading Switch
:
Frequency Modulation
:
Frequency Sub Carrier
:
Forward
:
Generator
:
Ground
:
High Pass Filter
H.SW
Hz
I
IC
IF
IND
INV
K
KIL
L
L
LED
LIMIT AMP
LM, LDM
LP
L.P.F
LUMI.
M
M
MAX
MINI
MIX
MM
MOD
MPX
MS SW
N
NC
NR
O
OSC
OPE
P
PB
PB CTL
PB-C
PB-Y
PCB
P. CON
PD
PG
P-P
R
R
REC
REC-C
REC-Y
REEL BRK
REEL S
REF
REG
REW
REV, RVS
RF
RMC
RY
S
S. CLK
S. COM
S. DATA
SEG
SEL
SENS
SER
SI
SIF
SO
SOL
SP
STB
SW
:
Head Switch
:
Hertz
:
Integrated Circuit
:
Intermediate Frequency
:
Indicator
:
Inverter
:
Killer
:
Left
:
Light Emitting Diode
:
Limiter Amplifier
:
Loading Motor
:
Long Play
:
Low Pass Filter
:
Luminance
:
Motor
:
Maximum
:
Minimum
:
Mixer, mixing
:
Monostable Multivibrator
:
Modulator, Modulation
:
Multiplexer, Multiplex
:
Mecha State Switch
:
Non Connection
:
Noise Reduction
:
Oscillator
:
Operation
:
Playback
:
Playback Control
:
Playback-Chrominance
:
Playback-Luminance
:
Printed Circuit Board
:
Power Control
:
Phase Detector
:
Pulse Generator
:
Peak-to Peak
:
Right
:
Recording
:
Recording-Chrominance
:
Recording-Luminance
:
Reel Brake
:
Reel Sensor
:
Reference
:
Regulated, Regulator
:
Rewind
:
Reverse
:
Radio Frequency
:
Remote Control
:
Relay
:
Serial Clock
:
Sensor Common
:
Serial Data
:
Segment
:
Select, Selector
:
Sensor
:
Search Mode
:
Serial Input
:
Sound Intermediate Frequency
:
Serial Output
:
Solenoid
:
Standard Play
:
Serial Strobe
:
Switch
C1-1
Page 18
S
SYNC
SYNC SEP
T
TR
TRAC
TRICK PB
TP
U
UNREG
V
V
VCO
VIF
VP
V.PB
VR
V.REC
VSF
VSR
VSS
V-SYNC
VT
X
X'TAL
Y
Y/C
KEY TO ABBREVIATIONS
:
Synchronization
:
Sync Separator, Separation
:
Transistor
:
Tracking
:
Trick Playback
:
Test Point
:
Unregulated
:
Volt
:
Voltage Controlled Oscillator
:
Video Intermediate Frequency
:
Vertical Pulse, Voltage Display
:
Video Playback
:
Variable Resistor
:
Video Recording
:
Visual Search Fast Forward
:
Visual Search Rewind
:
Voltage Super Source
:
Vertical-Synchronization
:
Voltage Tuning
:
Crystal
:
Luminance/Chrominance
C1-2
Page 19
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 HOURS USED).
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (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"
C2-1
Page 20
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 HOURS USED
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.
C3-1
Page 21
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.)
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
C3-2
Page 22
WHEN REPLACING EEPROM (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
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 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.
Monoscope, 6KHz
Color Bar, 1KHz
Hi-Fi Audio
X Value Adjustment
Monoscope, 6KHz
Color Bar, 1KHz
Hi-Fi Audio
X Value Adjustment
VSR Torque, Brake Torque (S Reel/T Reel Ass'y)
Brake Torque (T Reel Ass'y)
VSR Torque, Brake Torque (S Reel)
Guide Roller Adjustment
X Value Adjustment
Reel Disk Height Adjustment
Reel Disk Height Adjustment
Playback Torque, Back Tension Torque During Playback
Used to connect the test point of SERVICE and GROUND
How to use the Servicing Fixture
1.
Unplug the connector CP757 and CP353, then remove the TV/VCR Block from the set.
2.
Remove the Operation PCB from the set, then connect it with the Syscon PCB.
If necessary, connect CP353. (Front A/V Jack Input Terminal)
3.
Short circuit between TP1001 and Ground with the cable JG154.
(Refer to MAJOR COMPONENTS LOCATION GUIDE)
4.
The EOT, BOT and Reel Sensor do not work at this moment.
At that time, the STOP/EJECT button is available to insert and eject the Cassette Tape.
C5-1
Page 24
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.
While turning the reel and confirm the following points.
Check if the surface "A" of reel disk is lower than the
surface "B" of reel disk height adjustment jig (JG024A)
and is higher than the surface "C". If it is not passed,
place the height adjustment washers and adjust to
10(+2, -0)mm.
4.
Adjust the other reel in the same way.
1-2: CONFIRMATION AND ADJUSTMENT OF TENSION
POST POSITION
1.
Set to the PLAY mode.
2.
Adjust the adjusting parts for the Tension Arm position
so that the Tension Arm top is within the standard line of
Main Chassis.
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)
Fig. 1-2-A
Adjusting parts for the
Tension Arm position
Tension Band
Master Plane (JG022)
10(+0.2, -0)mm
Master Plane (JG022)
Height Adjustment
Washer
2.6x4.7xT0.13
2.6X4.7xT0.25
Reel Disk Height Adjustment Jig
(JG024A)
Reel Disk Height
Reel Disk
Adjustment Jig
(JG024A)
(B)
(A)
Fig. 1-1-A
(C)
Fig. 1-1-B
The Tension Arm top will
move to the inside direction
of the Main Chassis.
Bend
The Tension Arm top will
move to the outside direction
of the Main Chassis.
Fig. 1-2-B
1-3: CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAYBACK
Load a video tape (T-120) 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 (JG100A)
1.
After confirmation and adjustment of Tension Post
position (Refer to item 1-2), load the cassette type
torque tape (JG100A) and set to the PLAY mode.
2.
Confirm that the right meter of the torque tape indicates
50~90gf•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
D1-1
Page 25
MECHANICAL ADJUSTMENTS
1-4: CONFIRMATION OF VSR TORQUE
Install the Torque Gauge (JG002F) and Adapter (JG002B)
1.
on the S Reel. Set to the Picture Search (Rewind) mode.
(Refer to Fig.1-4-B)
Then, confirm that it indicates 120~180gf•cm.
2.
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-B)
Once set to the Fast Forward mode then set to the Stop
1.
mode. While, unplug the AC cord when the Pinch Roller
Block is on the position of Fig. 1-4-A.
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-B)
Once set to the Fast Forward mode then set to the Stop
1.
mode. While, unplug the AC cord when the Pinch Roller
Block is on the position of Fig. 1-4-A.
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 30~50gf•cm.
4.
The position at FF mode.
Pinch Roller Block
Stop at this position.
Cassette
The position at
STOP mode.
Capstan DD Unit
Cassette Holder Ass'y
Opener
Fig. 1-4-A
NOTE
If the torque is out of the range, replace the following
parts.
Check item
1-4
1-5
S Reel side:
Replacement Part
Idler Ass'y/Clutch Ass'y
S Reel/Tension Band/Tension
Connect/Tension Arm Ass'y
T Reel side:
T Reel/T Brake Band//T Brake
Spring/T Brake Arm
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 (JG001 or JG001B).
1.
(Refer to SERVICING FIXTURE AND TOOLS)
Connect CH-1 of the oscilloscope to TP4001 (Envelope)
2.
and CH-2 to TP1002 (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 Adjusting
5.
Driver (JG005) 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
(JG002F/JG002B)
S Reel
Torque Gauge/Adapter
(JG002E/JG002B)
T Reel
Fig. 1-4-B
D1-2
CH-1
Envelope
(TP4001)
CH-1
Track
CH-2
SW Pulse (TP1002)
EntranceExit
Max
A
A : B ≥ 3 : 2
B
CH-2
Track
Fig. 2-1-A
Max
Fig. 2-1-B
Page 26
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 (JG001 or JG001B) .
(Refer to SERVICING FIXTURE AND TOOLS)
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.
a)
When the reflected picture is distorted, turn the screw
1 clockwise until the distortion is disappeared.
b)
When the reflected picture is not distorted, turn the
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.
c)
When the height is not correct, turn the screw 3 to
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 TP4001, CH-2 to
5.
TP1002 and CH-3 to HOT side of Audio Out Jack.
Playback the VHS Alignment Tape (JG001S or
6.
JG001T). (Refer to SERVICING FIXTURE AND TOOLS)
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.2-3.
Envelope
(1)
CH-3
Audio
(2)
Audio/Control Head
3
2
Audio/Control Head
Tape
Stamp Mark
1
4
Fig. 2-2-A
Fig. 2-2-B
0.25±0.05mm
Fig. 2-2-C
Fig. 2-3
2-4: CONFIRM HI-FI AUDIO (Hi-Fi model only)
Connect CH-1 of the oscilloscope to TP1002 and CH-2 to
1.
the Hi-Fi Audio Out Jack.
Playback the VHS Alignment Tape (JG001P or JG001Q) .
2.
(Refer to SERVICING FIXTURE AND TOOLS)
Press and hold the Tracking-Auto button on the remote
3.
control more than 2 seconds to set tracking to center.
Press the Tracking Up button and count number of steps
4.
which the audio output is changed from Hi-Fi (10KHz) to
MONO (6KHz).
Press and hold the Tracking-Auto button on the remote
5.
control more than 2 seconds to set tracking to center.
Press the Tracking Down button and count number of
6.
steps which the audio output is changed from Hi-Fi
(10KHz) to MONO (6KHz).
If the difference are more than 3 steps, set the X Value
7.
adjustment driver (JG153) to 4 of Fig. 2-2-B. Change the
X Value and adjust it so that the value becomes within 2
steps.
D1-3
Page 27
MECHANICAL ADJUSTMENTS
3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
3
4
5
6
2
1
8910
1. Tension Connect
2. Tension Arm
3. Guide Roller
4. Audio/Control Head
5. X value adjustment driver hole
6.
P4 Post
7.
T Brake Spring
8.
T Reel
9.
S Reel
10.
Adjusting parts for the Tension Arm position
7
D1-4
Page 28
ELECTRICAL ADJUSTMENTS
1. BEFORE MAKING ELECTRICAL
ADJUSTMENTS
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
•
Use an isolation transformer when performing any
service on this chassis.
•
Before removing the anode cap, discharge electricity
because it contains high voltage.
•
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
Inferior silicon grease can damage IC's and transistors.
•
When replacing IC's and transistors, use only specified
silicon grease (YG6260M).
Remove all old silicon before applying new silicon.
On-Screen Display Adjustment
Unplug the AC plug for more than 5 seconds to set the
1.
clock to the non-setting state. Then, set the volume
level to minimum.
Press the VOL. DOWN button on the set and the
2.
Channel button (9) on the remote control simultaneously
to appear the adjustment mode on the screen as shown
in Fig. 1-1.
2. BASIC ADJUSTMENTS
(VCR SECTION)
2-1: PG SHIFTER
1.
Connect CH-1 on the oscilloscope to TP1002 and CH-2
to pin 4 of CP1003.
2.
Playback the alignment tape. (JG001A)
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.
TV
00 OSD 15
Use the Channel UP/DOWN button or Channel button
3.
(0-9) on the remote control to select the options shown
in Fig. 1-2.
Press the MENU button on the remote control to end
4.
the adjustments.
FUNCTION
NO.
OSD H
00
CUT OFF
01
RF AGC DELAY
02
VIF VCO
03
H VCO
04
H PHASE
05
V SIZE
06
V SHIFT
07
R DRIVE
08
B DRIVE
09
R CUT OFF
10
G CUT OFF
11
B CUT OFF
12
FUNCTION
NO.
BRIGHTNESS
13
CONTRAST
14
COLOR
15
TINT
16
SHARPNESS
17
FM LEVEL
18
LEVEL
19
SEPARATION 1
20
SEPARATION 2
21
TEST MONO
22
TEST STEREO
23
X-RAY TEST
24
Fig. 1-1
Fig. 1-2
CH-2
6.5H
CH-1
Fig. 2-1-A
CH-2
CH-1
6.5H
Fig. 2-1-B
2-2: VCO FREERUN
1.
Place the set with Aging Test for more than 10 minutes.
2.
Receive the VHF HIGH.
3.
Disconnect the Antenna while receiving the VHF HIGH
and set to the Noise screen.
4.
Once turn off the Power and turn on the Power again.
5.
Approxi. 3 seconds later, input the Antenna again.
6.
Connect the digital voltmeter between the pin 5 ofCP351 and the pin 1 (GND) of CP351.
7.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select "VIF VCO".
8.
Press the VOL. UP/DOWN button on the remote control
until the digital voltmeter is 2.5V.
9.
After the 2.5V adjustment, countdown the VIF VCO step
No. by 1 step with the VOL. DOWN button.
D2-1
Page 29
ELECTRICAL ADJUSTMENTS
2-3: RF AGC DELAY
1.
Receive the VHF HIGH (63dB).
2.
Connect the digital voltmeter between the pin 5 ofCP351 and the pin 1 (GND) of CP351.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (02) on the remote control to
select "RF AGC DELAY".
4.
Press the VOL. UP/DOWN button on the remote control
until the digital voltmeter is 2.9V ± 0.15V.
(TV SECTION)
2-4: CONSTANT VOLTAGE
1.
Connect the digital voltmeter to the TP601.
2.
Set condition is AV MODE without signal.
3.
Using the remote control, set the brightness and contrast
to normal position.
4.
Adjust the VR502 until the digital voltmeter is 135 ± 0.5V.
2-5: CUT OFF
1.
Adjust the unit to the following settings.
R CUT OFF=128, G CUT OFF=128, B CUT OFF=128,
BRIGHTNESS=128, CONTRAST=100
2.
Place the set with Aging Test for more than 15 minutes.
3.
Set condition is AV MODE without signal.
4.
Using the remote control, set the brightness and
contrast to normal position.
5.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (01) 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 color bar pattern.
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 (10) on the remote control to
select "R CUT OFF".
5.
Using the VOL. UP/DOWN button on the remote
control, adjust the R CUT OFF.
6.
Press the CH. UP/DOWN button on the remote control
to select the "R DRIVE", "B DRIVE", "G CUT OFF" or
"B CUT OFF".
7.
Using the VOL. UP/DOWN button on the remote
control, adjust the R DRIVE, B DRIVE, G CUT OFF or
B CUT OFF.
8.
Perform the above adjustments 6 and 7 until the white
color is looked like a white.
2-7: FOCUS
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Turn the Focus Volume fully counterclockwise once.
4.
Adjust the Focus Volume until picture is distinct.
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 (05) on the remote control to
select "H PHASE".
4.
Press the VOL. UP/DOWN button on the remote control
until the right and left screen size of the vertical line
becomes the same.
2-9: VERTICAL SHIFT
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 (07) on the remote control to
select "V SHIFT".
4.
Press the VOL. UP/DOWN button on the remote control
until the horizontal line becomes fit to the notch of the
shadow mask.
2-10: VERTICAL SIZE
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 (06) on the remote control to
select "V SIZE".
4.
Press the VOL. UP/DOWN button on the remote control
until the rectangle on the center of the screen becomes
square.
5.
Receive a broadcast and check if the picture is normal.
2-11: SUB BRIGHTNESS
1.
Receive the monoscope pattern. (RF Input)
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 (13) on the remote control to
select "BRIGHTNESS".
4.
Press the VOL. UP/DOWN button on the remote
control until the white 10% is starting to be visible
5.
Receive the monoscope pattern. (Audio Video Input)
6.
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~4.
2-11: SUB CONTRAST MANUAL
1.
Receive the color bar pattern. (RF Input)
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 (14) on the remote control to
select "CONTRAST".
4.
Press the VOL. UP/DOWN button on the remote control
until the contrast STEP No. becomes "100".
Receive the color bar pattern. (Audio Video Input)
5.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~4.
D2-2
Page 30
ELECTRICAL ADJUSTMENTS
2-13: SUB TINT
1.
Receive the color bar pattern. (RF Input)
2.
Connect the oscilloscope to TP801.
3.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (16) on the remote control to
select "TINT".
5.
Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes a straight line.
(Refer to Fig. 2-2)
6.
Receive the color bar pattern. (Audio Video Input)
7.
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~5.
"A"
Fig. 2-2
2-14: SUB COLOR
1.
Receive the color bar pattern. (RF Input)
2.
Connect the oscilloscope to TP803.
3.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (15) on the remote control to
select "COLOR".
5.
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.
6.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 110% of the white
level. (Refer to Fig. 2-3)
7.
Receive the color bar pattern. (Audio Video Input)
8.
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~6.
2-15: OSD HORIZONTAL
1.2.Activate the adjustment mode display of Fig. 1-1.
Press the VOL. UP/DOWN button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-4)
TV
00 OSD 15
A
2-16: SUB SHARPNESS
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "SHARPNESS".
2.
Check if the step No. of SHARPNESS is "40".
3.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 1, 2.
2-17: H VCO
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (04) on the remote control to
select "H VCO".
2.
Check if the step No. of H VCO is "4".
B
Fig. 2-4
White 0%
White 100%
100%
Red Level
Fig. 2-3
D2-3
Page 31
ELECTRICAL ADJUSTMENTS
3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE
CP1003
TP1001
TP4001
TP1002
FB401
FOCUS VOLUME
SCREEN VOLUME
TP601
TU601
CP351
SYSCON PCB
J801
VR502
TP801
TP803
CRT PCB
D2-4
Page 32
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.
310 85OA300065 LOADING ARM S UNIT CD1501 122H071603 CORD JUMPER SMCD-7X151
311 85OA300066 LOADING ARM T UNIT CD1502 122Y021902 CORD JUMPER 2Y021902
312 85OA400223 INCLINED BASE T UINT 3S H5001 1523D91034 HEAD (AUDIO CONTROL) HVMXA1072A
313 85OA400226 P5 ARM ASS'Y H5002 1543D02013 HEAD (FULL ERASE) HVFHP0032A
314 85OA400233 TENSION ARM ASS'Y (WT) !M101 1596P98001 MOTOR (LOADING) MXN13FB12K3
315 85OA400231 INCLINED BASE S UNIT !M2001 1510S98036 CAPSTAN DD UNIT F2QVB08
316 85OP800358 SPRING,LOCKER !M2003 1589S11014 MICRO MOTOR I2OAL03
317 85OP900736 CASS,HOLDER !UN4001 A5A305A500 CYLINDER UNIT ASS'Y A5A305A500
318 85OP900748 CASS,SIDE L
319 85OP900749 CASS,SIDE R
320 85OP900739 LOCKER,R
321 85OA900228 LINK UNIT
322 85OP000496 POST,CASS GUIDE
323 85OP200291 REEL,S (S)
324 85OP200292 REEL,T (S)
325 85OP200308 GEAR,IDLER
326 85OP200311 GEAR,CLUTCH
327 85OP200312 GEAR,COUPLING
328 85OP200313 LEVER,CLUTCH
329 85OP300194 GEAR,MAIN LOADING
CD352 06CH12435ACORD CONNECTOR CH12435A
!CD501 120R414903CORD AC BUSH 0R414903
CD757 06CH2A019ACORD CONNECTOR CH2A019A
CD801 06CU82039ACORD CONNECTOR SM1098-009-1A
CD803 06CH012101CORD CONNECTOR CH012101
CD851 WHL6032038FLAT CABLE AWG26 10C BLACK 320MM
CD852 06CH01408ACORD EIS CONNECTOR CH01408A
CF601 1022T45R72FILTER,SAW SAF45MFY220ZR
CF603 1011T4R504FILTER,CERAMIC EFCT4R5YS5A
CF604 1011T4R517FILTER,CERAMIC EFCT4R5MW5
CP351 0694260139 CONNECTOR PCB SIDE 173979-6
CP353 0694270139 CONNECTOR PCB SIDE 173979-7
!CP401 069S450089 CONNECTOR PCB SIDE A1561WV2-A5P
!CP502 069S420110 CONNECTOR PCB SIDE A1561WV2-2P
CP504 069W01001ACONNECTOR PCB SIDE 003P-2100
CP505 069W01001ACONNECTOR PCB SIDE 003P-2100
CP757 06942A0139 CONNECTOR PCB SIDE 1-173979-0
CP801 069S320010 CONNECTOR PCB SIDE A2361WV2-2P
CD4001 122L061501 CORD JUMPER 2L061501
CP1001 06972C0010CONNECTOR PCB SIDE TMC-J12P-B2
CP1003 0694240139 CONNECTOR PCB SIDE 173979-4
CP4001 0697240600 CONNECTOR PCB SIDE TOC-C04X-B1
CP4002 069J760029 CONNECTOR PCB SIDE IMSA-9604S-06Z14
CP4003 0697120320 CONNECTOR PCB SIDE TMC-T02X-E1
CP851A 067U010049WIRE HOLDER B2013H02-10P
CP851B 067U010049WIRE HOLDER B2013H02-10P
CUS012 800WFAA008CUSHION C
!F501 081PC05004FUSE 51MS050LCC
!F502 081PC2R504FUSE 51MS025LCC
J3-2
Page 59
SPEC.NO.
O/R NO.
M5A3-04C
K1X5006
Page 60
MVT2135B Series E
SERVICE MANUAL
COLOR TELEVISION/VIDEO CASSETTE RECORDER
ORIGINAL
MFR’S VERSION C
Design and specifications are subject to change without notice.
Page 61
SERVICING NOTICES ON CHECKING
As for the places which need special attentions,
they are indicated with the labels or seals on the
cabinet, chassis and parts. Make sure to keep the
indications and notices in the operation manual.
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
3. USE THE DESIGNATED PARTS
The parts in this equipment have the specific
characters of incombustibility and withstand
voltage for safety. Therefore, the part which is
replaced should be used the part which has
the same character.
Especially as to the important parts for safety
which is indicated in the circuit diagram or the
table of parts as a mark, the designated
parts must be used.
4. PUT PARTS AND WIRES IN THE
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING
There are parts which use the insulation
material such as a tube or tape for safety, or
which are assembled in the condition that
these do not contact with the printed board.
The inside wiring is designed not to get closer
to the pyrogenic parts and high voltage parts.
Therefore, put these parts in the original
positions.
5. TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is
secured against implosion. However, when
removing it or serving from backward, it is
dangerous to give a shock. Take enough care to
deal with it.
6. AVOID AN X-RAY1. KEEP THE NOTICES
Safety is secured against an X-ray by considering about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage peripheral circuit, use the designated parts and
make sure not modify the circuit.
Repairing except indicates causes rising of high
voltage, and it emits an X-ray from the cathoderay tube.
PERFORM A SAFETY CHECK AFTER
7.
SERVICING
Confirm that the screws, parts and wiring which
were removed in order to service are put in the
original positions, or whether there are the
portions which are deteriorated around the
serviced places serviced or not. Check the
insulation between the antenna terminal or
external metal and the AC cord plug blades.
And be sure the safety of that.
(INSULATION CHECK PROCEDURE)
1.
Unplug the plug from the AC outlet.
2.
Remove the antenna terminal on TV and turn
on the TV.
3.
Insulation resistance between the cord plug
terminals and the eternal exposure metal
[Note 2] should be more than 1M ohm by
using the 500V insulation resistance meter
[Note 1].
4.
If the insulation resistance is less than 1M
ohm, the inspection repair should be
required.
[Note 1]
If you have not the 500V insulation
resistance meter, use a Tester.
[Note 2]
External exposure metal: Antenna terminal
Earphone jack
HOW TO ORDER PARTS
Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER
The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be
found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
A1-1
Page 62
CONTENTS
SERVICING NOTICES ON CHECKING ..................................................................................
HOW TO ORDER PARTS .......................................................................................................
Auto TrackingYes
HQ (VHS Standard High Quality)Yes
Auto Power On, Auto Play, Auto Rewind, Auto EjectYes
VIDEO PLUS+(SHOWVIEW,G-CODE)
Auto ClockYes
Forward / Reverse Picture SearchYes
Reverse Slow
One Touch Playback
Auto CH MemoryYes
Closed CaptionYes
TV Auto Shut off FunctionYes
End Call
Index Search
SQPB
CATVYes
CM Skip(30sec x 6 Times)Yes
Comb Filter
TV MonitorYes
Program Extend
Choke Coil
Energy StarYes
Protect of FBT Leak Curcuit
Dirty Head
V-chipUSA V-chipYes
CANADA V-chip
Zero ReturnYes
CM Advance
Movie Advance
DC Car Cord (Center+)
AC Plug Adapter
AC Cord
AV Cord (2Pin-1Pin)
Guarantee CardYes
Registration Card
ESP Card
Warning Sheet
Dew/AHC Caution Sheet
Quick Set-up Sheet
Circuit Diagram
Service Facility List
Important Safeguard
G-15InterfaceSwitchPowerYes
G-16Set SizeApprox. W x D x H (mm)362 x 370.5 x 382
G-17WeightNet (Approx.)11.0
G-18CartonMaster Carton
G-19Cabinet MaterialCabinet FrontPS94V0/DECABROM
Informatin Sheet
PlayYes
Pause/Still
System Select
One Touch Playback
Channel UpYes
Channel DownYes
F.FWD/CueYes
Eject/StopYes
Main Power SW
Volume UpYes
Volume DownYes
Rew/RevYes
Rec/OTRYes
IndicatorPower
Key Light upRec/OTR
TerminalsFrontVideo InputRCA x 1
RearVideo Input
Gift BoxYes
Drop TestNatural Dropping At
Container Stuffing(40' container)700
Input Select
Rec/OTRRed
T-RecRed
On Timer
CS
One Touch Playback
Play
Audio InputRCA x 1
Other TerminalHead Phone(Stereo & Mono, 3.5mm)
Audio Input
Video Output
Audio Output
Euro Scart
Diversity
Ext Speaker W
DC Jack 12V(Center +)
VHF/UHF Antenna Input
AC Inlet
Gross (Approx.)12.5
Content-
Material-
Dimensions W x D x H(mm)-
Description of Origin-
MaterialDouble/White
Dimensions W x D x H(mm)423 x 447 x 443
DesignAs per Buyer's
Description of OriginYes
Height (cm)62
Cabinet RearPS94V0/DECABROM
F Type
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
(24.3 lbs)
(27.6 lbs)
No
1 Corner / 3 Edges / 6 Surfaces
Sets
A3-4
Page 67
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1: BACK CABINET (Refer to Fig. 1-1)
1.
Remove the 5 screws 1.
2.
Remove the AC cord from the AC cord hook 3.
3.
Remove the Back Cabinet in the direction of arrow.
Front Cabinet
1
1
1
1
3
Back Cabinet
1
1-2: CRT PCB (Refer to Fig. 1-2)
CAUTION: BEFORE REMOVING THE ANODE CAP,
DISCHARGE ELECTRICITY BECAUSE IT
CONTAINS HIGH VOLTAGE.
BEFORE ATTEMPTING TO REMOVE OR
REPAIR ANY PCB, UNPLUG THE POWER
CORD FROM THE AC SOURCE.
1.
Remove the Anode Cap.
(Refer to REMOVAL OF ANODE CAP)
2.
Disconnect the following connectors:
(CP801 and CP851B).
3.
Remove the CRT PCB in the direction of arrow.
CRT PCB
Front Cabinet
Fig. 1-1
1-3: TV/VCR BLOCK (Refer to Fig. 1-3)
1.
Remove the 2 screws 1.
2.
Disconnect the following connectors:
(CP757, CP351, CP401 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: DECK CHASSIS AND SYSCON PCB
(Refer to Fig. 1-4)
1.
Remove the screw 1.
2.
Remove the screw 2.
3.
Remove the screw 3.
4.
Remove the Deck Shield Plate in direction of arrow (A).
5.
Remove the screw 4.
6.
Remove the Cover Light Plate in direction of arrow (C).
7.
Remove the 3 screws 5.
8.
Disconnect the following connectors:
CP1001, CP4001, CP4002 and CP4003).
9.
Remove the Deck Chassis in the direction of arrow (B).
10.
Remove the screw 6.
11.
Remove the Syscon PCB in the direction of arrow (C).
1
5
5
(A)
3
2
Deck Shield Plate
5
Fig. 1-3
Fig. 1-2
B1-1
Deck Chassis
(B)
6
4
(C)
Syscon PCB
Cover Light Plate
Deck Holder
Fig. 1-4
Page 68
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Extend the 2 supports 1.
1.
Slide the 2 supports 2 and remove the Top Bracket.
2.
NOTE
1. After the installation of the Top Bracket, bend the
support 1 so that the Top Bracket is fixed.
Top Bracket
1
Top Bracket
2
Main Chassis
2
Main Chassis
2-2: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-2)
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
1
Fig. 2-1
Locker R
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.
Locker R
Check if these
Cassette Side R
positions are locked.
Fig. 2-3-B
2-4: LINK UNIT (Refer to Fig. 2-4)
Set the Link Unit to the Eject position.
1.
Unlock the support 1.
2.
Remove the (A) side of the Link Unit first, then remove
3.
the (B) side.
Main Chassis
Link Unit
Link Ass'y
Cassette Side L
Main Chassis
Fig. 2-2
2-3: CASSETTE SIDE L/R (Refer to Fig. 2-3-A)
Remove the Locker Spring.
1.
Unlock the 4 supports 1 and then remove the Cassette
2.
Side L/R.
Unlock the support 2 and then remove the Locker R.
3.
Locker Spring
1
1
2
Cassette Holder
Locker R
1
1
(A)
1
(B)
Link Unit
Main Chassis
2-5: LINK LEVER/FLAP LEVER (Refer to Fig. 2-5)
Extend the support 1.
1.
Remove the Link Lever.
2.
Remove the Flap Lever.
3.
1
Flap Lever
Link Lever
Fig. 2-4
Fig. 2-5
Cassette Side R
Cassette Side L
Fig. 2-3-A
B2-1
Page 69
DISASSEMBLY INSTRUCTIONS
2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A)
Remove the screw 1.
1.
Remove the Loading Motor.
2.
Remove the Worm.
3.
Loading Motor
Worm
Main Chassis
• Screw Torque: 3 ± 0.5kgf•cm
1
Fig. 2-6-A
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.
Tension Arm Ass'y
Tension Connect
Tension Spring
2
4
1
3
Tension Holder
Fig. 2-7-A
1
Tension Band
Tension Arm Ass'y
Fig. 2-7-B
19.2 ± 0.1mm
Safety surface for pressing
of the insert.
Loading Motor
Cassette Opener
Fig. 2-6-B
Fig. 2-6-C
2-7: TENSION ASS'Y (Refer to Fig. 2-7-B)
Turn the Pinch Roller Cam clockwise so that the
1.
Tension Holder hook is set to the position of Fig. 2-7-A
to move the Tension Arm Ass'y.
Remove the Tension Spring.
2.
Unlock the 2 supports 1 and remove the Tension
3.
Band.
Unlock the support 2 and remove the Tension Arm
4.
Ass'y.
Unlock the support 3 and remove the Tension
5.
Connect.
Float the hook 4 and turn it clockwise then remove the
6.
Tension Holder.
B2-2
NOTE
1.
In case of the Tension Band installation, note the
direction of the installation. (Refer to Fig. 2-7-C)
2.
In case of the Tension Band installation, install correctly
as Fig. 2-7-D.
3.
In case of the Tension Connect installation, install as
the circled section of Fig. 2-7-E.
Tension Connect
Tension Band
Fig. 2-7-C
[OK]
[NG]
Tension Connect
Tension Connect
Tension Band
Tension Band
Fig. 2-7-D
Tension Connect
Main Chassis
Fig. 2-7-E
Page 70
DISASSEMBLY INSTRUCTIONS
2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A)
Remove the T Brake Spring.
1.
Turn the T Brake Arm clockwise and bend the hook
2.
section to remove it.
Unlock the 2 supports 1 and remove the T Brake
3.
Band.
Idler Gear
S Reel
Idler Arm Ass'y
(B)
T Brake Band
Hook section
1
1
T Brake Arm
T Brake Spring
Fig. 2-8-A
NOTE
1. In case of the T Brake Band installation, install correctly
as Fig. 2-8-B.
[OK]
T Brake Band
[NG]
T Brake Band
T Brake Arm
T Brake Arm
(A)T Reel
1
(A)
1
Fig. 2-9-A
NOTE
1.2.In case of the S Reel and T Reel installation, check if the
correct parts are installed. (Refer to Fig. 2-9-B)
In case of the Idler Arm Ass'y installation, install correctly
as Fig. 2-9-C. And also set it so that the section "B" of Fig.
2-9-A is placed under the Main Chassis tab.
Fig. 2-8-B
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.
1.
Remove the 2 Polyslider Washers 1.
2.
Remove the Idler Arm Ass'y and Idler Gear.
3.
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. 2-9-A) Do not adhere the stains
on it.
When you install the reel, clean the shaft and grease it
5.
(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.
6.
(Refer to MECHANICAL ADJUSTMENT)
[OK]
[NG]
Clutch Gear
Clutch Gear
Big Hole
(S Reel)
Small Hole
(T Reel)
Fig. 2-9-B
Idler Arm Ass'y
Idler Arm Ass'y
Fig. 2-9-C
B2-3
Page 71
DISASSEMBLY INSTRUCTIONS
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
1.
Opener.
Remove the Pinch Roller Block and P5 Arm Ass'y.
2.
1
Cassette Opener
Pinch Roller Block
P5 Arm Ass'y
Main Chassis
Fig. 2-10-A
NOTE
Do not touch the Pinch Roller. (Use gloves.)
1.
In case of the Pinch Roller Block and the Pinch Roller
2.
Cam installation, install correctly as Fig. 2-10-B.
Pinch Roller Block
P5 Arm Ass'y
Can be seen the hole of the
Main Cam.
Can be seen the hole of
the Pinch Roller Cam.
Fig. 2-10-B
2-11: A/C HEAD (Refer to Fig. 2-11-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
1.
Do not touch the A/C Head. (Use gloves.)
2.
When you install the A/C Head Spring, install as shown in
Fig. 2-11-B.
3.
When you install the A/C Head, tighten the screw (1) first,
then tighten the screw (2), finally tighten the screw (3).
(3)
(1)
2
2
(2)
2
A/C Head
Spring Position
Fig. 2-11-B
2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12)
Remove the screw 1.
1.
Remove the FE Head.
2.
1
FE Head
• Screw Torque: 5 ± 0.5kgf•cm
• The FE Head is not installed on the Video Cassette Player.
Fig. 2-12
2-13: AHC ASS'Y/CYLINDER UNIT ASS'Y
(Refer to Fig. 2-13)
Unlock the support 1 and remove the AHC Ass'y.
1.
Disconnect the following connector:
2.
(CD2001)
Remove the 3 screws 2.
3.
Remove the Cylinder Unit Ass'y.
4.
NOTE
When you install the Cylinder Unit Ass'y, tighten the
1.
screws from (1) to (3) in order while pulling the Ass'y
toward the left front direction.
Cylinder Unit Ass'y
AHC Ass'y
1
1
• Screw Torque: 5 ± 0.5kgf•cm (Screw 1)
A/C Head Spring
A/C Head Base
Fig. 2-11-A
B2-4
• Screw Torque: 3 ± 0.5kgf•cm
(3)
(2)
(1)
2
2
2
Fig. 2-13
Page 72
DISASSEMBLY INSTRUCTIONS
2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A)
Remove the Capstan Belt.
1.
Remove the 3 screws 1.
2.
Remove the Capstan DD Unit.
3.
2-15:
MAIN CAM/PINCH ROLLER CAM/JOINT GEAR
(Refer to Fig. 2-15-A)
Remove the E-Ring 1, then remove the Main Cam.
1.
Remove the E-Ring 2, then remove the Pinch Roller
2.
Cam and Joint Gear.
1
Capstan Belt
Capstan DD Unit
1
1
• Screw Torque: 4 ± 0.5kgf•cm
1
Fig. 2-14-A
NOTE
1.
In case of the Capstan DD Unit installation, apply the
silicon bond (TSE3843-W) on the position Fig. 2-14-B
correctly. (If no silicon bond applied, abnormal noise will
be heard on the deck operation.)
(Refer to Fig. 2-14-B, C)
Applied position of
silicon bond
Main Cam
2
Pinch Roller Cam
Joint Gear
Fig. 2-15-A
NOTE
In case of the Pinch Roller Cam and Main Cam
1.
installation, install them as the circled section of Fig. 215-B so that the each markers are met. (Refer to Fig.
2-15-B)
Pinch Roller Cam
Marker
Capstan DD Unit
Be careful not to apply the silicon
bond to the Pinch Roller.
Fig. 2-14-B
Silicon Bond
Main Chassis
Fig. 2-14-C
Main Cam
Fig. 2-15-B
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
Tension Lever
Main Loading Gear
Loading Arm T Ass'y
Loading Arm S Ass'y
B2-5
Fig. 2-16-A
Page 73
DISASSEMBLY INSTRUCTIONS
NOTE
When you install the Loading Arm S Ass'y, Loading Arm
1.
T Ass'y and Main Loading Gear, align each marker.
(Refer to Fig. 2-16-B)
Marker
CASSETTE GUIDE POST/INCLINED BASE S/T
2-18:
UNIT/P4 CAP (Refer to Fig. 2-18-A)
Remove the P4 Cap.
1.
Unlock the support 1 and remove the Cassette Guide
2.
Post.
Remove the Inclined Base S Unit and Inclined Base T
3.
Unit.
Main Loading Gear
Marker
Loading Arm T Ass'y
2-17:
CLUTCH ASS'Y/RING SPRING/CLUTCH LEVER/
Loading Arm S Ass'y
CLUTCH GEAR (Refer to Fig. 2-17-A)
Remove the Polyslider Washer 1.
1.
Remove the Clutch Ass'y and Ring Spring.
2.
Remove the Clutch Lever.
3.
Remove the Coupling Gear, Coupling Spring and
4.
Clutch Gear.
1
Clutch Ass'y
Ring Spring
Coupling Gear
Coupling Spring
Clutch Lever
Fig. 2-16-B
Cassette Guide Post
Inclined Base T
Unit
P4 Cap
Inclined Base S
Unit
1
Fig. 2-18-A
NOTE
Do not touch the roller of Guide Roller.
1.
In case of the P4 Cap installation, install it with parallel
2.
for "A" and "B" of Fig. 2-18-B.
In case of the Cassette Guide Post installation, install
3.
correctly as the circled section of Fig. 2-18-C.
"A"
"B"
Clutch Gear
Fig. 2-17-A
NOTE
In case of the Clutch Ass'y installation, install it with
1.
inserting the spring of the Clutch Ass'y into the dent of
the Coupling Gear. (Refer to Fig. 2-17-B)
Clutch Ass'y
Coupling Gear
Fig. 2-17-B
B2-6
P4 Cap
[OK]
Cassette Guide Post
[NG]
Cassette Guide Post
Cassette Opener
Fig. 2-18-B
Fig. 2-18-C
Page 74
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
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
Support
CRT
Fig. 3-1
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. 3-2
Support
CRT
5.6.Confirm that the Support is securely connected.
Put on the Rubber Cap without moving any parts.
B3-1
Fig. 3-5
Page 75
DISASSEMBLY INSTRUCTIONS
4.
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
REMOVAL
Put the Masking Tape (cotton tape) around the Flat
1.
Package IC to protect other parts from any damage.
(Refer to Fig. 4-1.)
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
When IC starts moving back and forth easily after
3.
desoldering completely, pickup the corner of the IC using
a tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 4-3.)
NOTE
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC
leads or solder lands under the IC when removing it.
Blower type IC
desoldering
machine
Masking Tape
(Cotton Tape)
Heat the IC leads using a blower type IC desoldering
2.
IC
machine. (Refer to Fig. 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.
Blower type IC
desoldering machine
Fig. 4-1
Tweezers
IC
Fig. 4-3
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
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
IC
Fig. 4-2
IC pattern
Fig. 4-4
B4-1
Page 76
DISASSEMBLY INSTRUCTIONS
INSTALLATION
Take care of the polarity of new IC and then install the
1.
new IC fitting on the printed circuit pattern. Then solder
each lead on the diagonal positions of IC temporarily.
(Refer to Fig. 4-5.)
Soldering Iron
Solder temporarily
Solder temporarily
Fig. 4-5
Supply the solder from the upper position of IC leads
2.
sliding to the lower position of the IC leads.
(Refer to Fig. 4-6.)
When bridge-soldering between terminals and/or the
4.
soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 4-8.)
Thin-tip Soldering Iron
IC
Fig. 4-8
Finally, confirm the soldering status on four sides of the
5.
IC using a magnifying glass.
Confirm that no abnormality is found on the soldering
position and installation position of the parts around the
IC. If some abnormality is found, correct by resoldering.
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, be always sure to replace the IC in this
case.
Soldering IronSolder
IC
Absorb the solder left on the lead using the Braided
3.
Supply soldering
from upper position
to lower position
Shield Wire. (Refer to Fig. 4-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
IC
Braided Shield Wire
Fig. 4-6
Fig. 4-7
B4-2
Page 77
A
A/C
ACC
AE
AFC
AFT
AFT DET
AGC
AMP
ANT
A.PB
APC
ASS'Y
AT
AUTO
A/V
B
BGP
BOT
BPF
BRAKE SOL
BUFF
B/W
C
C
CASE
CAP
CARR
CH
CLK
CLOCK (SY-SE)
COMB
CONV
CPM
CTL
CYL
CYL-M
CYL SENS
D
DATA (SY-CE)
dB
DC
DD Unit
DEMOD
DET
DEV
E
E
EF
EMPH
ENC
ENV
EOT
EQ
EXT
F
F
FBC
FE
FF
FG
FL SW
FM
FSC
FWD
G
GEN
GND
H
H.P.F
KEY TO ABBREVIATIONS
:
Audio/Control
:
Automatic Color Control
:
Audio Erase
:
Automatic Frequency Control
:
Automatic Fine Tuning
:
Automatic Fine Tuning Detect
:
Automatic Gain Control
:
Amplifier
:
Antenna
:
Audio Playback
:
Automatic Phase Control
:
Assembly
:
All Time
:
Automatic
:
Audio/Video
:
Burst Gate Pulse
:
Beginning of Tape
:
Bandpass Filter
:
Brake Solenoid
:
Buffer
:
Black and White
:
Capacitance, Collector
:
Cassette
:
Capstan
:
Carrier
:
Channel
:
Clock
:
Clock (Syscon to Servo)
:
Combination, Comb Filter
:
Converter
:
Capstan Motor
:
Control
:
Cylinder
:
Cylinder-Motor
:
Cylinder-Sensor
:
Data (Syscon to Servo)
:
Decibel
:
Direct Current
:
Direct Drive Motor Unit
:
Demodulator
:
Detector
:
Deviation
:
Emitter
:
Emitter Follower
:
Emphasis
:
Encoder
:
Envelope
:
End of Tape
:
Equalizer
:
External
:
Fuse
:
Feed Back Clamp
:
Full Erase
:
Fast Forward, Flipflop
:
Frequency Generator
:
Front Loading Switch
:
Frequency Modulation
:
Frequency Sub Carrier
:
Forward
:
Generator
:
Ground
:
High Pass Filter
H.SW
Hz
I
IC
IF
IND
INV
K
KIL
L
L
LED
LIMIT AMP
LM, LDM
LP
L.P.F
LUMI.
M
M
MAX
MINI
MIX
MM
MOD
MPX
MS SW
N
NC
NR
O
OSC
OPE
P
PB
PB CTL
PB-C
PB-Y
PCB
P. CON
PD
PG
P-P
R
R
REC
REC-C
REC-Y
REEL BRK
REEL S
REF
REG
REW
REV, RVS
RF
RMC
RY
S
S. CLK
S. COM
S. DATA
SEG
SEL
SENS
SER
SI
SIF
SO
SOL
SP
STB
SW
:
Head Switch
:
Hertz
:
Integrated Circuit
:
Intermediate Frequency
:
Indicator
:
Inverter
:
Killer
:
Left
:
Light Emitting Diode
:
Limiter Amplifier
:
Loading Motor
:
Long Play
:
Low Pass Filter
:
Luminance
:
Motor
:
Maximum
:
Minimum
:
Mixer, mixing
:
Monostable Multivibrator
:
Modulator, Modulation
:
Multiplexer, Multiplex
:
Mecha State Switch
:
Non Connection
:
Noise Reduction
:
Oscillator
:
Operation
:
Playback
:
Playback Control
:
Playback-Chrominance
:
Playback-Luminance
:
Printed Circuit Board
:
Power Control
:
Phase Detector
:
Pulse Generator
:
Peak-to Peak
:
Right
:
Recording
:
Recording-Chrominance
:
Recording-Luminance
:
Reel Brake
:
Reel Sensor
:
Reference
:
Regulated, Regulator
:
Rewind
:
Reverse
:
Radio Frequency
:
Remote Control
:
Relay
:
Serial Clock
:
Sensor Common
:
Serial Data
:
Segment
:
Select, Selector
:
Sensor
:
Search Mode
:
Serial Input
:
Sound Intermediate Frequency
:
Serial Output
:
Solenoid
:
Standard Play
:
Serial Strobe
:
Switch
C1-1
Page 78
S
SYNC
SYNC SEP
T
TR
TRAC
TRICK PB
TP
U
UNREG
V
V
VCO
VIF
VP
V.PB
VR
V.REC
VSF
VSR
VSS
V-SYNC
VT
X
X'TAL
Y
Y/C
KEY TO ABBREVIATIONS
:
Synchronization
:
Sync Separator, Separation
:
Transistor
:
Tracking
:
Trick Playback
:
Test Point
:
Unregulated
:
Volt
:
Voltage Controlled Oscillator
:
Video Intermediate Frequency
:
Vertical Pulse, Voltage Display
:
Video Playback
:
Variable Resistor
:
Video Recording
:
Visual Search Fast Forward
:
Visual Search Rewind
:
Voltage Super Source
:
Vertical-Synchronization
:
Voltage Tuning
:
Crystal
:
Luminance/Chrominance
C1-2
Page 79
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 KeyRemocon KeyOperations
VOL. (-) MIN
VOL. (-) MIN1
VOL. (-) MIN
VOL. (-) MIN
VOL. (-) MIN4
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.
If you set a factory initialization, the memories are reset such as the clock
setting, the channel setting, the POWER ON total hours, and PLAY/REC
total hours.
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 HOURS USED).
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
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 BOT, EOT and the Reel sensor do not work and the deck can be operated
without a cassette tape.
Refer to the "PREPARATION FOR SERVICING"
C2-1
Page 80
PREVENTIVE CHECKS AND SER VICE INTERVALS
The following standard table depends on environmental conditions and usage.
Parts replacing time does not mean the life span for individual parts.
Also, long term storage or misuse may cause transformation and aging of rubber parts.
The following list means standard hours, so the checking hours depends on the conditions.
Time
Parts Name
Audio Control Head
Full Erase Head
(Recorder only)
Capstan Belt
Pinch Roller
Capstan DD Unit
Loading Motor
Tension Band
T Brake Band
Clutch Ass'y
Idler Arm Ass'y
Capstan Shaft
Tape Running
Guide Post
Cylinder Unit
: Clean
: Check it and if necessary, replace it.
500
hours
1,000
hours
1,500
hours
2,000
hours
2,500
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 HOURS USED
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: If you set a factory initialization, the total hours is reset to "0".
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.
C3-1
Page 81
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.)
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
C3-2
Page 82
WHEN REPLACING EEPROM (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 5 seconds before Power On.
+0+1+2+3+4+5+6+7+8+9
880A6263431434095138
9A
B29293000000150800
10
062901171060323ADAD7
20101520252627
303A3C3E404142
28292A2C2E3032343638
40444D4E4F505152
4345464748494A4B4C
5355565758595A5B5C
50
60------------------
Enter DATA SET mode by setting VOLUME to minimum.
1.
While holding down VOLUME button on front cabinet, press key 6 on remote control simultaneously.
2.
ADDRESS and DATA should appear as FIG 1.
54
636466696D74797C7E7F
Table 1
ADDRESSDATA
+A
+B+C+D+E+FINI
30660040001000
A90F943E0604
5D5E5F606162
INIT 00 83
POWER ON
PLAY/REC
0010
0003
Fig. 1
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 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.
Monoscope, 6KHz
Color Bar, 1KHz
Hi-Fi Audio
X Value Adjustment
Monoscope, 6KHz
Color Bar, 1KHz
Hi-Fi Audio
X Value Adjustment
VSR Torque, Brake Torque (S Reel/T Reel Ass'y)
Brake Torque (T Reel Ass'y)
VSR Torque, Brake Torque (S Reel)
Guide Roller Adjustment
X Value Adjustment
Reel Disk Height Adjustment
Reel Disk Height Adjustment
Playback Torque, Back Tension Torque During Playback
Used to connect the test point of SERVICE and GROUND
How to use the Servicing Fixture
1.
Unplug the connector CP757 and CP351, then remove the TV/VCR Block from the set.
2.
Remove the Operation PCB from the set, then connect it with the Syscon PCB.
If necessary, connect CP351. (Front A/V Jack Input Terminal)
3.
Short circuit between TP1001 and Ground with the cable JG154.
(The BOT, EOT and the Reel Sensor do not work and the deck can be operated without a cassette tape.)
4.
In case of using a cassette tape, press the STOP/EJECT button to insert or eject a cassette tape.
Turn on the power and re-check the cable before checking the trouble points.
D1-1
Page 84
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.)
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.
While turning the reel and confirm the following points.
Check if the surface "A" of reel disk is lower than the
surface "B" of reel disk height adjustment jig (JG024A)
and is higher than the surface "C". If it is not passed,
place the height adjustment washers and adjust to
10(+2, -0)mm.
4.
Adjust the other reel in the same way.
Master Plane (JG022)
Reel Disk Height Adjustment Jig
(JG024A)
1-2: CONFIRMATION AND ADJUSTMENT OF TENSION
POST POSITION
1.
Set to the PLAY mode.
2.
Adjust the adjusting section for the Tension Arm
position so that the Tension Arm top is within the
standard line of Main Chassis.
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)
Fig. 1-2-A
Adjusting section for the
Tension Arm position
Tension Band
Master Plane (JG022)
10(+0.2, -0)mm
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
The Tension Arm top will
move to the inside direction
of the Main Chassis.
Bend
The Tension Arm top will
move to the outside direction
of the Main Chassis.
Fig. 1-2-B
1-3: CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAYBACK
Load a video tape (T-120) 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 (JG100A)
1.
After confirmation and adjustment of Tension Post
position (Refer to item 1-2), load the cassette type
torque tape (JG100A) and set to the PLAY mode.
2.
Confirm that the right meter of the torque tape indicates
50~90gf•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
D2-1
P1 Post
Guide Roller
Fig. 1-3
Page 85
MECHANICAL ADJUSTMENTS
1-4: CONFIRMATION OF VSR TORQUE
Install the Torque Gauge (JG002F) and Adapter (JG002B)
1.
on the S Reel. Set to the Picture Search (Rewind) mode.
(Refer to Fig.1-4-B)
Then, confirm that it indicates 120~180gf•cm.
2.
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-B)
Once set to the Fast Forward mode then set to the Stop
1.
mode. While, unplug the AC cord when the Pinch Roller
Block is on the position of Fig. 1-4-A.
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-B)
Once set to the Fast Forward mode then set to the Stop
1.
mode. While, unplug the AC cord when the Pinch Roller
Block is on the position of Fig. 1-4-A.
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 30~50gf•cm.
4.
The position at FF mode.
Pinch Roller Block
Stop at this position.
Cassette
The position at
STOP mode.
Capstan DD Unit
Cassette Holder Ass'y
Opener
Fig. 1-4-A
NOTE
If the torque is out of the range, replace the following
parts.
Check item
1-4
1-5
S Reel side:
Replacement Part
Idler Ass'y/Clutch Ass'y
S Reel/Tension Band/Tension
Connect/Tension Arm Ass'y
T Reel side:
T Reel/T Brake Band//T Brake
Spring/T Brake Arm
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 (JG001 or JG001B).
1.
(Refer to SERVICING FIXTURE AND TOOLS)
Connect CH-1 of the oscilloscope to TP4001 (Envelope)
2.
and CH-2 to TP1002 (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 Adjusting
5.
Driver (JG005) 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
(JG002F/JG002B)
S Reel
Torque Gauge/Adapter
(JG002E/JG002B)
T Reel
Fig. 1-4-B
D2-2
CH-1
Envelope
(TP4001)
CH-1
Track
CH-2
SW Pulse (TP1002)
EntranceExit
Max
A
A : B ≥ 3 : 2
B
CH-2
Track
Fig. 2-1-A
Max
Fig. 2-1-B
Page 86
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 (JG001 or JG001B).
(Refer to SERVICING FIXTURE AND TOOLS)
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.
a)
When the reflected picture is distorted, turn the screw
1 clockwise until the distortion is disappeared.
b)
When the reflected picture is not distorted, turn the
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.
c)
When the height is not correct, turn the screw 3 to
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 TP4001, CH-2 to
5.
TP1002 and CH-3 to HOT side of Audio Out Jack.
Playback the VHS Alignment Tape (JG001S or
6.
JG001T). (Refer to SERVICING FIXTURE AND TOOLS)
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.2-3.
Envelope
(1)
CH-3
Audio
(2)
Audio/Control Head
3
2
Audio/Control Head
Tape
Stamp Mark
1
4
Fig. 2-2-A
Fig. 2-2-B
0.25±0.05mm
Fig. 2-2-C
Fig. 2-3
2-4: CONFIRM HI-FI AUDIO (Hi-Fi model only)
Connect CH-1 of the oscilloscope to TP1002 and CH-2 to
1.
the Hi-Fi Audio Out Jack.
Playback the VHS Alignment Tape (JG001P or JG001Q).
2.
(Refer to SERVICING FIXTURE AND TOOLS)
Press and hold the Tracking-Auto button on the remote
3.
control more than 2 seconds to set tracking to center.
Press the Tracking Up button and count number of steps
4.
which the audio output is changed from Hi-Fi (10KHz) to
MONO (6KHz).
Press and hold the Tracking-Auto button on the remote
5.
control more than 2 seconds to set tracking to center.
Press the Tracking Down button and count number of
6.
steps which the audio output is changed from Hi-Fi
(10KHz) to MONO (6KHz).
If the difference are more than 3 steps, set the X Value
7.
adjustment driver (JG153) to 4 of Fig. 2-2-B. Change the
X Value and adjust it so that the value becomes within 2
steps.
D2-3
Page 87
MECHANICAL ADJUSTMENTS
3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
3
4
5
6
2
1
8910
1. Tension Connect
2. Tension Arm
3. Guide Roller
4. Audio/Control Head
5. X value adjustment driver hole
6.
P4 Post
7.
T Brake Spring
8.
T Reel
9.
S Reel
10.
Adjusting section for the Tension Arm position
7
D2-4
Page 88
ELECTRICAL ADJUSTMENTS
1. BEFORE MAKING ELECTRICAL
ADJUSTMENTS
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
•
Use an isolation transformer when performing any
service on this chassis.
•
Before removing the anode cap, discharge electricity
because it contains high voltage.
•
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
Inferior silicon grease can damage IC's and transistors.
•
When replacing IC's and transistors, use only specified
silicon grease (YG6260M).
Remove all old silicon before applying new silicon.
On-Screen Display Adjustment
Unplug the AC plug for more than 5 seconds to set the
1.
clock to the non-setting state. Then, set the volume
level to minimum.
Press the VOL. DOWN button on the set and the
2.
Channel button (9) on the remote control simultaneously
to appear the adjustment mode on the screen as shown
in Fig. 1-1.
2. BASIC ADJUSTMENTS
(VCR SECTION)
2-1: PG SHIFTER
1.
Connect CH-1 on the oscilloscope to TP1002 and CH-2
to pin 4 of CP1003.
2.
Playback the alignment tape. (JG001A)
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.
TV
00 OSD 15
Use the Channel UP/DOWN button or Channel button
3.
(0-9) on the remote control to select the options shown
in Fig. 1-2.
Press the MENU button on the remote control to end
4.
the adjustments.
FUNCTION
NO.
OSD H
00
CUT OFF
01
RF AGC DELAY
02
VIF VCO
03
H VCO
04
H PHASE
05
V SIZE
06
V SHIFT
07
R DRIVE
08
B DRIVE
09
R CUT OFF
10
G CUT OFF
11
B CUT OFF
12
FUNCTION
NO.
BRIGHTNESS
13
CONTRAST
14
COLOR
15
TINT
16
SHARPNESS
17
FM LEVEL
18
LEVEL
19
SEPARATION 1
20
SEPARATION 2
21
TEST MONO
22
TEST STEREO
23
X-RAY TEST
24
Fig. 1-1
Fig. 1-2
CH-2
6.5H
CH-1
Fig. 2-1-A
CH-2
CH-1
6.5H
Fig. 2-1-B
2-2: VCO FREERUN
1.
Place the set with Aging Test for more than 10 minutes.
2.
Receive the VHF HIGH.
3.
Disconnect the Antenna while receiving the VHF HIGH
and set to the Noise screen.
4.
Once turn off the Power and turn on the Power again.
5.
Approxi. 3 seconds later, input the Antenna again.
6.
Connect the digital voltmeter between the pin 5 ofCP351 and the pin 1 (GND) of CP351.
7.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select "VIF VCO".
8.
Press the VOL. UP/DOWN button on the remote control
until the digital voltmeter is 2.5V.
9.
After the 2.5V adjustment, countdown the VIF VCO step
No. by 1 step with the VOL. DOWN button.
D3-1
Page 89
ELECTRICAL ADJUSTMENTS
2-3: RF AGC DELAY
1.
Receive the VHF HIGH (63dB).
2.
Connect the digital voltmeter between the pin 5 ofCP351 and the pin 1 (GND) of CP351.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (02) on the remote control to
select "RF AGC DELAY".
4.
Press the VOL. UP/DOWN button on the remote control
until the digital voltmeter is 2.9V ± 0.05V.
(TV SECTION)
2-4: CONSTANT VOLTAGE
1.
Connect the digital voltmeter to the TP601.
2.
Set condition is AV MODE without signal.
3.
Using the remote control, set the brightness and contrast
to normal position.
4.
Adjust the VR502 until the digital voltmeter is 135 ± 0.5V.
2-5: CUT OFF
1.
Adjust the unit to the following settings.
R CUT OFF=128, G CUT OFF=128, B CUT OFF=128,
BRIGHTNESS=128, CONTRAST=100
2.
Place the set with Aging Test for more than 15 minutes.
3.
Set condition is AV MODE without signal.
4.
Using the remote control, set the brightness and
contrast to normal position.
5.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (01) 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 color bar pattern.
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 (10) on the remote control to
select "R CUT OFF".
5.
Using the VOL. UP/DOWN button on the remote
control, adjust the R CUT OFF.
6.
Press the CH. UP/DOWN button on the remote control
to select the "R DRIVE", "B DRIVE", "G CUT OFF" or
"B CUT OFF".
7.
Using the VOL. UP/DOWN button on the remote
control, adjust the R DRIVE, B DRIVE, G CUT OFF or
B CUT OFF.
8.
Perform the above adjustments 6 and 7 until the white
color is looked like a white.
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 (05) on the remote control to
select "H PHASE".
4.
Press the VOL. UP/DOWN button on the remote control
until the right and left screen size of the vertical line
becomes the same.
2-9: VERTICAL SHIFT
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 (07) on the remote control to
select "V SHIFT".
4.
Check if the step No. V. SHIFT is "3".
5.
Adjust the VR401 until the horizontal line becomes fit to
the notch of the shadow mask.
2-10: VERTICAL SIZE
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 (06) on the remote control to
select "V SIZE".
4.
Press the VOL. UP/DOWN button on the remote
control until the SHIFT quantity of the OVER SCAN on
upside and downside becomes minimum.
2-11: SUB BRIGHTNESS
1.
Receive the monoscope pattern. (RF Input)
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 (13) on the remote control to
select "BRIGHTNESS".
4.
Press the VOL. UP/DOWN button on the remote
control until the white 10% is starting to be visible
5.
Receive the monoscope pattern. (Audio Video Input)
6.
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~4.
2-7: FOCUS
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Turn the Focus Volume fully counterclockwise once.
4.
Adjust the Focus Volume until picture is distinct.
D3-2
Page 90
ELECTRICAL ADJUSTMENTS
2-12: SUB CONTRAST MANUAL
1.
Receive the color bar pattern. (RF Input)
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 (14) on the remote control to
select "CONTRAST".
4.
Press the VOL. UP/DOWN button on the remote control
until the contrast STEP No. becomes "100".
5.
Receive the color bar pattern. (Audio Video Input)
6.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~4.
2-13: SUB TINT
1.
Receive the color bar pattern. (RF Input)
2.
Connect the oscilloscope to TP801.
3.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (16) on the remote control to
select "TINT".
5.
Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes a straight line.
(Refer to Fig. 2-2)
6.
Receive the color bar pattern. (Audio Video Input)
7.
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~5.
White 0%
100%
White 100%
2-15: OSD HORIZONTAL
1.2.Activate the adjustment mode display of Fig. 1-1.
Press the VOL. UP/DOWN button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-4)
Red Level
Fig. 2-3
TV
"A"
Fig. 2-2
2-14: SUB COLOR
1.
Receive the color bar pattern. (RF Input)
2.
Connect the oscilloscope to TP803.
3.
Using the remote control, set the brightness, contrast,
color and tint to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (15) on the remote control to
select "COLOR".
5.
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.
6.
Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 110 ± 10% of the
white level. (Refer to Fig. 2-3)
7.
Receive the color bar pattern. (Audio Video Input)
8.
Press the INPUT SELECT button on the remote control
to set to the AV mode. Then perform the above
adjustments 2~6.
00 OSD 15
A
2-16: SUB SHARPNESS
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "SHARPNESS".
2.
Check if the step No. of SHARPNESS is "40".
3.
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 1, 2.
2-17: H VCO
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (04) on the remote control to
select "H VCO".
2.
Check if the step No. of H VCO is "4".
B
Fig. 2-4
D3-3
Page 91
ELECTRICAL ADJUSTMENTS
3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION)
CRT
L503
CP351
CP502
TU601
FB401
AC IN
TP1002
CP1003
CD757
TP4001
TP1001
CP757
VR502VR401
TP601
CP4002
A/C HEAD
SYSCON PCB
CD351
CP851A
CRT
CP801
CD801
R802
J801
CRT PCB
TP801
TP803
R810
CP851B
OPERATION PCB
D3-4
CD352
SPEAKER
Page 92
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.