Daewoo VCR MECHANISM UNIT User Manual

S/M No. : TMECHA

Service Manual

VCR MECHANISM UNIT

(T-MECHA DECK)

DAEWOO ELECTRONICS CO., LTD.

http : //svc.dwe .co.kr

Feb. 2000

CONTENTS

1. ASSEMBL Y DIAGRAM AND A/S............................................................................................2

2. WIRE DIAGRAM........................................................................................................................5

3. PERIODIC MAINTENANCE AND SERVICE SCHEDULE....................................................6

4. SERVICE SCHEDULE FOR THE MAJOR P ARTS................................................................7

5. JIGS AND TOOLS.....................................................................................................................8

6. DEASSEMBL Y AND REPLACEMENT.................................................................................10

7. MECHANICAL ADJUSTMENT..............................................................................................16

8.ADJUSTMENT OF THE T APE TRANSPORTING SECTION..............................................19

9. EXPLODED VIEW AND P ARTLIST.......................................................................................25

1. Assembly diagram 1-1. DECK Assembly diagram

A. Upper View

ASSEMBLY DIAGRAM AND A/S

1 MAINBASE ASS’Y 2 DRUM ASS’Y 3 FE HEAD 4 S SLANT POLE ASS’Y 5 TENSION 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 RELAY 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

fig1-1

ASSEMBLY DIAGRAM AND A/S (CONTINUED)

B. Lower V iew

20 L LOADING ASS’Y 21 R LOADING ASS’Y 22 CONNECT PLATE 23 REEL BELT 24 LOADING RACK

fig1-2

ASSEMBLY DIAGRAM AND A/S (CONTINUED)

1-2. FRONT LOADING Assembly diagram

1 FL BRKT L 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

fig2

2. Connector Pin Arrangement

1. Wire Diagram

WIRE DIAGRAM

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 the mechanism and tapes, we strongly urge you to perform periodic maintenance and inspection, as described below.

* After repairing, do the maintenance described below, irrespec-

tive of the length of time in use.

B. Cleaning of the Head Drum Ass'y

- Clean the Drum assembly with a cleaning cloth soaked in

liquid cleaner (alcohol) by placing lightly against the Drum and slowly revolving the rotating HEAD DRUM Ass'y by hand (Do not rotate the upper Drum by applying electric power to the motor when cleaning).

- Do not move the cleaning cloth in the vertical direction

against the heat-tip.

C. Cleaning the tape transporting section.

- Clean the tape transporting parts with a cleaning cloth

soaked in alcohol.

D. Cleaning of driving section

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

E. Routine inspection

- Perform maintenance and inspection as separately

described depending on the period of time in use.

- Refer to the table of 2-2-3.

2. CLEANING AND LUBRICA TION

A. Cleaning of Tape Transporting section and Driving section a. Cleaning of Tape Transporting section

- The following parts should 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

• CAPSTAN SHAFT • S GUIDE ROLLER

• T GUIDE ROLLER • PINCH ROLLER

• VERTICAL POST

- As the above parts contact with the video tape, they tend to collect dust particles. If they are stained with dust or foreign substance it has a bad effect on the picture and may lead to damage of the tape.

- After cleaning with alcohol, allow the parts to dry thoroughly before using a cassette tape.

b. Cleaning of Driving section

• REEL TABLE

• CAPSTAN FLYWHEEL/PULLEY

• REEL PULLEY

B. LUBRICATION

• S REEL POST

• T REEL TABLE POST

• REEL GEAR POST

- After cleaning these parts with alcohol, lubricate these with one or two drops of oil.

PERIODIC MAINTENANCE AND SERVICE SCHEDULE

SERVICE SCHEDULE FOR THE MAJOR PARTS

The following parts should receive periodic service, according to the recommended intervals.

: Check and Replace if necessary. : Replace

PERIODIC SER VICE (TIME)

NAME

1000 2000 3000 4000 5000

DRUM TOT AL ASS'Y

CAPST AN MOTOR

L/C BRKT TOT AL ASS'Y

REEL BEL T

IDLER PLATE TOTAL ASS'Y

REEL T ABLE

TENSION BAND ASS'Y

S, T BRAKE ASS'Y

PINCH ROLLER ASS'Y

AC HEAD ASS'Y

FE HEAD

REEL GEAR TOT AL ASS'Y

Note: Even though the unit is not used frequently, cleaning, lubrication and replacement of the belt should be undertaken every 2 years.

JIGS AND TOOLS

1. List of Jigs and Tools

FIG.

NO ITEMS MODEL

N O

REMARKS

NTSC: SP MONOSCOPE 7KHz CHECKING OF THE

1 ALIGNMENT TAPE SP COLORBAR 1KHz ! T APE TRANSPOR TING

(EP MONOSCOPE) SYSTEM

P AL/SCAM: SP MONOSCOPE 6KHz

SP COLORBAR 1KHz (LP MONOSCOPE)

CLEANING T APE

DHC-602V @

CHECKING OF THE T APE

(DAEWOO) TRANSPORTING SYSTEM

CASSETTE T APE KT -300NV

MEASUREMENT OF

(KOKUSAI) KT -300RV REEL TORQUE

VHS SPINDLE

TSH-V4 $

MEASUREMENT OF

HEIGHT GAUGE REEL HEIGHT

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 DENTAL MIRROR &

CHECKING OF THE T APE TRANSPORTING SYSTEM

+DRIVER *-1 ASSEMBLY,

DISASSEMBLY

ADJUSTMENT DR IVER *-2 AND ADJUSTMENT

JIGS AND TOOLS(CONTINUED)

2. Sketch of Jigs and Tools

ALIGNMENT TAPE

CLEANING TAPE

VHS SPINDLE HEIGHT GAUGE

1. Removal of the FRONT LOADING Ass’y (Fig. 3.1)

a. Unscrew the 2 screw holding the F/L. b. Separate the F/L Ass’y from the MAINBASE settling

down point by lifting the rear part of F/L (Screw Hole).

2. Deassembly of FRONT LOADING Ass’y (FIg. 3.2~3.5)

a. Remove the 1 washer for holding the door opener and

separate F/L Assembly by moving the DOOR OPENER in the direction of arrow.

b. Remove the 2 screw holding the TOP PLATE and sepa-

rate the CASSETTE HOLDER Ass’y by moving the FL BRKT L and FL BRKT R in the direction of arrow. (Fig.

3.2)

c. Separate the FL LIFT SPRING by twisting and dragging

from FL BRKT R. (Fig. 3.3)

DEASSEMBLY AND REPLACEMENT

NOTE: Remove the FRONT LOADING Ass’y in eject mode.

Fig. 3.1 Removal of the FRONT LOADING Ass’y

FIg. 3.2 Deassembly of the FRONT LOADING Ass’y

FIg. 3.3 Deassembly of the FL BRKT Ass’y

+ 23 hidden pages