Service manual

d. Make sure that the triangular mark “A” of the L

LOADING Ass’y is aligned with the mark “b” of the

R LOADING Ass’y. (Fig. 4.4)

e. Reference hole “C” of the LOADING RACK should

be aligned with the reference hole of the R

LOADING Ass’y to make the teeth of the

LOADING RACK is aligned as shown in Fig. 4.4.

4-2. Adjustment and measurement of the

BACK TENSION (Fig. 4.5, 4.6)

a. Check that the location of the TENSION POLE is in

the right position. If not, adjust that by refering to the

“4. Adjustment of the position of the TENSION

POLE”.

b. Playback a completely rewound T120 tape for 20

seconds. (Generally tape transporting section is

settled down in 20 seconds)

c. Measure the BACK TENSION by using the

TENTELO METER. (Refer to Fig. 4.5) The result

should be within the range of 20g~30g.

d. If the BACK TENSION is out of the range, change

the position of the TENSION SPRING of repeat the

process of “4. Adjustment of the position of the

TENSION POLE”. (Fig. 4.6)

FIg. 4.4 Assembly reference between the LOADING

RACK and the LOADING LEVER ASS’Y

CAUTION:

• If the measurement result is greater than the upper

limit, change the hook point of the spring to position

“A”.

• Confirm that all of the three probes of TENSION

meter are in contact with the tape.

• During measuring, don’t touch any other parts of

the MECHANISM(i.e, MAINBASE). It is

recommended that this measurement be repeated at

least three times for an accurate reading.

FIg. 4.5 Measurement of the BACK TENSION