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2. Visually check to see if the right edge of the tension pole

is within the 2.3 

±

 0.25 from the right edge of the Sup

guide shaft.

Insert the slotted screwdriver in the tension pole adjuster,
and rotate clockwise.

Insert the slotted screwdriver in the tension pole adjuster,
and rotate counterclockwise.

Tension pole adjuster adjusting range

2.3 

±

 0.25

2.3 

±

 0.25

2.3 

±

 0.25

Sup guide shaft

Adjust so that the delta mark of tension pole adjuster is
within 90

°

 range (left, right).

• Setting
1. Turn off the power switch.
2. Open the torque cassette meter and fix with tape.
3. Set the cassette tape in loading state.
4. Put the weight (500g) on the cassette torque meter.
5. Turn on the power switch.

Make the adjustment with the beginning of a E-180 tape.

Tension pole adjuster

90

°

90

°

Tension pole

500g

Weight to prevent
float (500g)

Cassette torque
meter

• Checking
1. Push the REC button to place the unit in the SP record

mode.

2. At this time ascertain that the back tension is within the

setting (36.5 to 52g·cm) by seeing the indication of
torque cassette meter.

• Setting
1. Set a torque gauge to zero on the scale. Place it on the

supply reel disk.

2. Switch from the FF mode to the STOP mode.
3. Disconnect the power cord.

Turn the torque gauge at a rate of about one turn/2 sec
in the CW direction/CCW direction with respect to the
supply reel disk so that the reel disk and torque gauge
pointer rotate at equal speed, and make sure that the
value is within the setting (CW direction: 4.9 to 13.7mN·m
(50 to 140gf·cm); CCW direction: 2.9 to 9.8mN·m (30 to
100gf·cm).

• Adjustment
1. If the indication of torque cassette meter is lower than

the setting, shift the tension spring engagement to the
part A.

2. If the indication of torque cassette meter is higher than

the setting, shift the tension spring engagement to the
part B.

CCW: 4.9~13.7mN

⋅

m (50~140gf

⋅

cm)

CW:

3.9~10.8mN

⋅

m (40~110gf

⋅

cm)

CCW: 2.9~9.8mN

⋅

m (30~100gf

⋅

cm)

CW:

4.9~13.7mN

⋅

m (50~140gf

⋅

cm)

Tension arm

Tension spring

CW

CCW

CW

Supply reel disk

Torque gauge

Torque gauge

CCW

Take-up reel
disk

A

B

• Setting
1. Switch from the FF mode to the STOP mode.
2. Disconnect the power cord.
3. Set a torque gauge to zero on the scale. Place it on the

take-up reel disk.

• Checking
1. Turn the torque gauge at a rate of about one turn/2 sec

in the CCW direction/CW direction so that the reel disk
and torque gauge pointer rotates at equal speed and
make sure that the value is within the setting (CCW
direction: 4.9 to 13.7mN·m (50 to 140gf·cm), CW direc-
tion: 3.9 to 10.8 mN·m (40 to 110gf·cm).

2. Adjustment of the brake torque at the supply side and the

take-up side

• Unless the supply side brake torque or take-up side

brake torque is within the setting, clean the felt surface
of reel disk (supply, take-up) brake lever, check again
the brake torque.

• If value cannot be set within the setting yet, replace the

main brake ass'y or main brake spring.

1. Solder the removed PWB to the new head assembly.
2. Adjust the height from the A/C head plate (lower surface)

to the A/C head base to 10.8mm with slide calipers. (3
places of azimuth screw section, tilt screw section and
hight screw section)

(See the figure below.)

3. Align the left end of gear of A/C head plate with the

punched mark of chassis, tentatively tighten the screws

1

 and 

2

 so as to ensure smooth motion of A/C head

plate. Tentative tightening torque must be 0.15 to 0.20
N·m (1.5 to 2.0kgf·cm).

1. Remove the cassette housing control assembly.
2. In unloading state unplug the power cord.

1. Remove the screws 

123

, Azimuth screw, Tilt screw.

2. Unsolder the PWB fitted to the A/C head.
Notes:
1. When replacing, never touch the head. If you touched,

clean with the cleaning liquid.

2. When removing the screw 

3

, take care so that the

spring may out.

New A/C head ass'y

A/C head PWB

2

Spring

1

Solder

10.8mm

10.8mm

Azimuth screw

Height screw

Tilt  screw

A/C head base

Note:
1. If the screws 

1

 and 

2

 are tighten tentatively too loose,

the azimuth and height of A/C head may change when
they are finally tightened. Therefore care must be taken.

2. After completion of A/C head be sure to adjust tape

running. (Execute the running adjustment by the method
described in Page 21, 22.)

Punched line mark on chassis

Left end of A/C head plate gear

1

2

3

Height screw

3

❈

Never touch the head

500g

Height screw

Azimuth screw

Tilt screw

Cassette tape

Mechanism chassis

Tape

0.3mm

A/C head

• Adjustment
Adjust the height screw

 

visually so that the control head is

visible 0.3mm below the bottom of the tape.

1. Set the cassette tape in the unit.
2. Press the PLAY button to put the unit in the playback

mode.

3. Roughly adjust the height of the A/C head by turning the

height screw until the tape is in the position shown
below.

1. Adjust the height from the mechanism chassis to the

reverse guide lower flange to 13.38 mm, using the
reverse guide height adjustment jig, in tape loading
state. (Refer to Figure 4-28 (a) (b).)

3. Set the tape, and check for tape crease near the reverse

guide in the playback mode.
If crease is found, turn the reverse guide adjustment nut
to remove crease. (As for crease check refer to Figure 4-
30.)

2. Rotate counterclockwise the reverse guide height ad-

justment nut 1/10 turn. (For height adjustment use the
reverse guide height adjustment box driver (JiGDRiVER
11055)).

13.38mm

Box driver

Height adjusting nut

500g

Capstan
motor shaft

Mechanism
chassis

Reverse guide

An example of
crease near the
reverse guide

Weight  to
prevent float (500g)

Fixing guide

* Check for crease from the A direction.

CCW

A

Reverse guide height
adjusting jig

Reverse guide height
adjusting jig

Reverse guide

Mechanism
chassis

Weight  to prevent
float (500g)