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2-4

3

two screws
(BVTT 2.6 

×

 6)

4

bridge

5

HM bracket ass’y

6

two screws
(PS 3 

×

 4)

7

head motor block ass’y (head up/down)

(M902)

2

connector

(CN1940)

1

two clamps (LOW TYPE)

2

three connectors
(CN1931, 1932, 1935)

1

FP-702 flexible board
(CN1933)

2

connector
(CN1942)

2

two connectors
(CN1940, 1941)

3

screw
(BVTT2.6 

×

 6)

4

Removal the MD-40 board
to direction of the arrow.

1

FP-703 flexible board
(CN1934)

1

FP-700 flexible board
(CN1936)

2

connector
(CN1938)

3

two screws
(BVTT2.6 

×

 6)

2

DC motor (stepping motor)
(platen) (M904)

1

two screws
(BVTT2.6 

×

 6)

4

motor bracket ass’y section 

3

two screws
(BVTT2.6 

×

 6)

5

two screws
(PS2 

×

 4)

6

reel motor block ass’y (ribbon) (M903) 

2-5 E

3-1 E

1) Before replacing the head, print the stair-step pattern with the

old head (faulty head).

Only when the head is not entirely damaged with black or
white lines.

To reproduce the stair-step pattern, refer to “Adjusting
Method 1” in “4. Electrical Adjustments”.

2) Remove the upper cabinet. (Refer to “2. Disassembly”.)
3) Remove the flat cables 1 (POHE13) and 2 (ADHE13) from

the thermal head. (Refer to Fig. 1)

4) Remove the two screws 3 (BVTT2.6 

×

 6) and remove the

harnesses 4 and fan holder 5. (Refer to Fig. 1)

5) Remove screw 6, (PS2.6 

×

 4) and remove the ribbon guide

7. (Refer to Fig. 2)

6) Remove the two screws 8 (PSW2.6 

×

 8) and remove the ther-

mal head 9 from the heat sink 0. (Refer to Fig. 2)

Do not remove the screw !™ fixing the heat sink 0 and head
arm !¡.

7) Replace the thermal head 9.

Make sure that the silicon grease (white) does not stick onto
the printing screen of the thermal head. If it does, remove with
alcohol.

8) Assemble in the reverse order of steps 2) to 6).
9) Perform “Head Voltage Adjustment” of “4. Electrical Adjust-

ments” (Page 4-3).

3

two screws
(BVTT2.6 

×

 6)

4

harness

4

harness

2

flat cable
(ADHE13)

1

flat cable
(POHE13)

5

fan holder

!¡

head arm

8

two screws
(PSW2.6 

×

 8)

6

screw
(PS2.6 

×

 4)

7

ribbon guide

!™

two screws

Note: Do not remove 

the screw.

0

heat sink

9

thermal head

4-1

During the adjustment, see the Adjustment and Adjust-
ment Pats on page 4-7.

1. Equipment required

Electrical adjustment requires the following measuring equip-
ment.

(1)

Monitor TV

(2)

Oscilloscope: 2 phenomena, bend 30 MHz or more, with de-
lay mode (use 10 : 1 probe unless otherwise specified)

(3)

Frequency counter

(4)

Pattern generator

(5)

Digital voltmeter

(6)

Video print paper

(7)

Video print cartridge

(8)

Vector scope

2. Connection of Equipment
Following the designation of input terminal (S-VIDEO or VIDEO),
connect measuring units as shown in Fig. 4-1 and make adjust-
ment.
The input terminal is designated with (    ) in the signal column.
Unless otherwise designated, either input terminal may be used.

In the adjustment where the S-VIDEO input is designated, if ad-
justment was made with the VIDEO input. The specification of
this set will not be satisfied. Always follow the designation.
If adjustment was made using the VTR with S-VIDEO OUT termi-
nal as a signal source, the performance of this set depends on that
VTR. Therefore, use the pattern generator with the Y/C separate
output terminals, if possible.

If S-VIDEO is designated

Pattern Generator

Pattern Generator

Pattern Generator

VIDEO IN

S-VIDEO

 IN

Monitor TV

Set

VIDEO IN

VIDEO 

OUT

S-VIDEO OUT

VIDEO OUT 
(75 

Ω

)

VIDEO OUT
(75 

Ω

)

Y OUT (75 

Ω

)

Chroma OUT

(75 

Ω

)

VTR with S-VIDEO terminal (E-E mode)

•

If pattern generator does not provide Y/C separate 
output terminals

•

If pattern generator provide 
Y/C separate output terminals

If VIDEO is designated