DAEWOO T30 Service Manual

T HOMSON

MULTI

MEDIA

SERVICE MANUAL
DOCUMENTATION TECHNIQUE
TECHNISCHE DOKUMENTATION
DOCUMENTAZIONE TECNICA
DOCUMENTACION TECNICA

X1000

WARNING : Before servicing this chassis please read the safety recommendations.
ATTENTION : Avant toute intervention sur ce châssis, lire les recommandations de sécurité.

ACHTUNG : Vor jedem Eingriff auf iesem Chassis, die Sicherheitsvorschriffen lesen.
ATTENZIONE : Prima di intervenire sullo chassis, leggere le norme di sicurezza.
IMPORTANTE : Antes de cualquier intervención, leer las recomendaciones de seguridad.

Brandt FERGUSON THOMSON

(DECK MECHANISM)

1

CONTENTS

1. Description Of The Mechanism........................................................................................2

2. Assembly Diagram & Major Parts Check.........................................................................5

3. Disassembly & Replacement...........................................................................................12

4. Mechanical Adjustmen....................................................................................................18

5. Adjustment Of Tape Transporting System ......................................................................21

6. Exploded View & Parts List ............................................................................................26

7. Parts List..........................................................................................................................30

2

1) T-Mecha Deck follows the VHS standard.

2) T-Mecha Deck uses three motors(Drum motor, Capstan motor and L/C motor)

3) T-Mecha Deck uses L/C motor to drive Front Loading.

4) T-Mecha Deck recognizes each mode by using a 4-Bit Mode signal.
This 4-Bit Mode signal is generated by the Cam Switch which is driven by the L/C Motor.

5) T-Mecha Deck is operated by 6 Modes(Eject/Initial/Review/Idle/Play, Stop,Slow/Brake/FF&Rewind).

6) T-Mecha Deck reduces the mode shifting time, that is, picture playing time by using the Full Loading System

that has the Drum wrapped by the tape.

7) T-mecha Deck is seperated from the Main PCB.
When assembling, it is connected by B-B Type connector.
The Capstan motor and Drum output of T-mecha Deck and the Main PCB are directly connected without
using cable

.

1. DESCRIPTION OF THE MECHANISM

1-1 Characteristic Of the T-Mecha Deck Mechanism

1-2 Timming Chart

3

1-3 Wire Diagram & Connector pin Arrangement

4

2. ASSEMBLY DIAGRAM & MAJOR PARTS CHECK

2-1. ASSEMBLING DIAGRAM

2-1-1) DECK ASSEMBLY DIAGRAM

A. UPPER VIEW

1. MAINBASE ASS'Y

2. DRUM ASS'Y

3. FE HEAD

4. S SLANT POLE ASS'Y

5. THENSION BAND ASS'Y

6. S BRAKE ASS'Y

7. S REEL TABLE

8. REEL BRKT TOTAL ASS'Y

9. IDLER PLATE TOTAL ASS'Y

10. T BRAKE ASS'Y

11. FL RACK
12 REALAY LEVER
13 CAPSTAN MOTOR
14 LC BRKT ASS'Y
15 PINCH LEVER TOTAL ASS'Y
16 CAM GEAR

17 AC HEAD ASS'Y
18 T SLANT POLE ASS'Y
19 HEAD CLEANER

5

B. BOTTOM VIEW

20. L LOADING ASS'Y

21. R LOADING ASS'Y

22. CONNECT PLATE

23. REEL BELT

24. LOADING RACK

6

1. FL BRKTL

2. TOP PLATE

3. SAFETY LEVER

4. LOADING LEVER AS4

5. CST HOLDER AS

6. DOOR OPENER

7. SAFETY LEVER R

8. FL BRKT R

2-1-2) FRONT LOADING assemble diagram

7

2-2-1) Periodic maintenance and Service Schedule

A.

In order to effectively maintain the excellent performance and fully utilize the features of this apparatus. and to
lengthen the life of mechanism and tapes, we strongly urge”you to perform the periodic maintenance and inspection
as described below.

¡ Following should be done after the substitution of parts of deck or correction of deck failure.

B. Cleaning of the DRUM TOTAL ASS`Y

- Slowly turnning DRUM TOTAL ASS`Y, wipe the drum surface with clean cloth soaked “ in alcohol. (Don’t
connect the power when turnning the UPPER DRUM)

- Don’t wipe the Head-Tip vertically with cleaning cloths.

C. Tape transporting section cleaning

- Clean the tape transporting section with clean cloth soaked in alcohol.

D. Driving section cleaning

- Clean the driving section with clean cloth soaked in alcohol.

E. Everyday inspection

- Perform the maintenance and inspection periodically according to the number of use.

- Refer to the table 2.2.3.

2-2-2) Cleaning and Lubrication

A. Cleaning of Tape Transporting section and driving section

a. Cleaning of Tape Transporting section

- The following parts shoule be cleaned after every 500 hours of use.

• TENSION POLE • S SLANT POLE • AC HEAD/AE HEAD

• S GUIDE POST • VIDEO HEAD / DRUM • T GUIDE POST

• FE HEAD • T SLANT POLE • CAPSTASN SHAFT

• S GUIDE ROLLER • T GUIDE ROLLER • PINCH ROLLER

- Because the above part contacts with video tape, they tend to be stained with dusts “and foreign substances
which can cause the bad effect on the picture and demage the tape sometimes.

- After cleaning with alcoho., be sure to dry the surface of drum thoroughly before using a tape.

b. Cleaning of the driving section

•REEL TABLE •

CAPSTAN FLYWHEEL/PULLEY

•REEL PULLEY

B. Lubrication

•REEL GEAR POST :
After the cleaning the parts with alcohol, lubricate them with one or two drops of oil.”

•S/T REEL TABLE POST :

After the cleaning the parts with alcohol, lubricate them with grease.”

2-2. PERIODIC MAINTENANCE AND SERVICE SCHEDULE

2-2-3) SERVICE SCHEDULE FOR EACH PARTS

Following parts should be checked according to the recommanded intervals.

: Check and Replace if necessary . : Replace

PERIODIC SERVICE (TIME)

NAME

1000 2000 3000 4000 5000

DRUM TOTAL ASS'Y

CAPST AN MOT OR

L/C BRKT TOTAL ASS'Y

REEL BEL T

IDLER PLATE TOTAL ASS'Y

REEL T ABLE

T BRAKE ASS'Y

TENSION BAND ASS'Y

PINCH LEVER TOTAL ASS'Y

AC HEAD ASS'Y

FE HEAD

REEL GEAR TOTAL ASS'Y

8

Note: Even though the unit is not used frequently, cleaning, lubrication and replacement of the belt

should be undertaken every 2 years.

9

2-3-1) LIST OF JIGS AND TOOLS

2-3. JIGS AND TOOLS

FIG.

NO ITEMS MODEL

N O

REMARKS

NTSC: SP MONOSCOPE 7KHz CHECKING OF THE

1 ALIGNMENT T APE SP COLORBAR 1KHz T APE TRANSPORTING

(EP MONOSCOPE) SYSTEM

P AL/SCAM: SP MONOSCOPE 6KHz

SP COLORBAR 1KHz
(LP MONOSCOPE)

2

CLEANING T APE

DHC-602V

CHECKING OF THE T APE

(DAEWOO) TRANSPOR TING SYSTEM

3

CASSETTE T APE KT -300NV MEASUREMENT OF
(KOKUSAI) KT -300RV REEL TORQUE

4

VHS SPINDLE

TSH-V4

MEASUREMENT OF

HEIGHT GAUGE REEL HEIGHT

5

TENTELO METER

T2-H7-UM

MEASUREMENT OF

(TENTELO) THE BACK TENSION

F AN TYPE MEASUREMENT OF THE

6 TENSION METER BELOW 3KG PRESSING FORCE FOR

THE PINCH ROLLER

7 DENT AL MIRROR

CHECKING OF THE T APE
TRANSPOR TING SYSTEM

+DRIVER -1

ASSEMBLY,

8 HEX DRIVER -2 DISASSEMBLY

AND ADJUSTMENT

ADJUSTMENT DR IVER -3