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1

2

AUDIO/VIDEO PWB

MAIN PWB

CASSETTE
HOUSING

Tuner

MECHANISM
CHASSIS

1. When removing the mechanism from the main PWB.

Remove the PWB bottom plate 1 screw 

1

.

Remove the FFC cable (AA, AD, AH) 

2

 which connect-

ing the PWB and the mechanism.
Take out vertically the mechanism so that it does not
damage the adjacent parts.

2. Removing the mechanism and cassette housing.

Remove 2 screws 

3

 fixing the cassette housing to the

mechanism, and remove the cassette housing.

INSTALLING THE CASSETTE HOUSING
When the cassette housing is installed on the mechanism,
the initial setting is essential condition.
There are two initial setting methods, namely electrical and
mechanical.
1. Electrical initial setting
So as to perform initial setting of mechanism execute the
Step 1 of Installation of cassette housing. After ascertaining
the return to the initial setting position (*1) install the

cassette housing. (Conditions: When mechanism and PWB
have been installed)

2. Mechanical initial setting
Feed the pulley feed gear of loading motor with screw
driver. After ascertaining the return to the initial set position
(*1) install the cassette housing in the specified position.
(This method is applied only for the mechanism.)

INSTALLING THE MECHANISM ON PWB
Lower vertically the mechanism, paying attention to the
mechanism edge, and install the mechanism with due care
so that the parts are not damaged. So as to fix the mecha-
nism to the main PWB install 1 screw 

1

. For other, fix the

vicinity of loading motor and solder joint side of main PWB.)
Connect again the FFC cable (AA-MH, AD-ME, AH-MH)
between the mechanism and the main PWB.

PARTS WHICH NEED PARTICULAR CARE
When installing the mechanism chassis on the PWB unit,
take care so as to prevent deformation due to contact of
mechanism chassis with REC TIP SW.

Pulley feed gear

Screwdriver

Casecon
drive gear

Drive angle of
cassette housing

Tilt mark (*1)

1

AUDIO/VIDEO PWB

MAIN PWB

START SENSOR

END SENSOR

REC TIP SW

TUNER

• Reassembly
1. Before installing the cassette housing control, short-

circuit between TP5102 and TP5103 provided goes left
at VCR display PWB, press the eject button. The casecon
drive gear turns and stops when the positioning mark
appears. Engage two teeth of casecon drive gear with
the three teeth of casecon drive angle gear, and set on
the mechanism chassis as shown below.

2. Install in the reverse order of removal.

Power source plug is pulled out after the mounted
completion, and it comes.

Notes:
1. When fitting the S/E sensor holder to the cassette

controller frame L/R, take care.

2. Misengagement of teeth of casecon drive gear and drive

angle gear causes malfunction. (The cassette cannot be
set, load and ejection are repeated).

3. In the case when you use the magnet screw driver, never

approach the magnet driver to the A/C head, FE head,
and drum.

4. When installing or removing, take care so that the

cassette housing control and tool do not contact the
guide pin or drum.

5. After installing the cassette housing control once per-

form cassette loading operation.

1. Remove the full-surface panel.
2. Short-circuit between TP5102 and TP5103.
3. Plug in the power cord.
4. Turn off  the power switch.

(The pole bases move into U.L.position.)

5. Open the lid of a cassette tape by hand.
6. Hold the lid with two pieces of vinyl tape.
7. Set the cassette tape in the mechanism chassis.
8. Stabilize the cassette tape with a weight (500g) to

prevent floating.

9. Turn on the power switch.
10. Perform running test.

• Removal
1. In the cassette removing mode, remove the cassette.
2. Unplug the power cord.
3. Remove in the following numerical order.

a) Remove two screws 

1

.

b) Slide and pull up the cassette housing control.

1

Casecon
drive gear

Casecon drive
angle gear

500g

Mechanism chassis

Weight to prevent
float (500g)

Note:
The weight should not be more than 500g.

To take out the cassette tape.
1. Turn off the power switch.
2. Take out the cassette tape.

Cassette
housing
control

• Removal
1. Remove the cassette housing control assembly.
2. Pull the tension band out of the tension arm ass'y.
3. Remove the Supply/Take-up main brake ass'y.
4. Open the hook at the top of the reel disk, and remove the

reel disk.

Note:
Take care so that the tension band ass'y and main brake
ass'y (especially soft brake) are not deformed.

Notes:
1. When installing the reel disk, take due care so that the

tension band ass'y is not deformed and grease does no
adhere.

2. Do not damage the Supply main brake ass'y. Be careful

so that grease does not adhere to the brake surface.

• Reassembly (Take-up reel disk)
1. Clean the reel disk shaft and apply grease (SC-141) to

it.

2. Align the phase of the reel disk to that of the reel relay

gear and to install a new take-up reel disk onto the shaft.

3. Check the reel disk height and reassemble the take-up

main brake ass'y.

Note:
1. Take care so that the Take-up main brake ass'y is not

damaged. Take care so that grease does not adhere the
brake surface.

2. After reassembly, check the video search rewind back

tension (see 8-13), and check the brake torque (see 8-
17).

1. Set the master plane with due care so that it does not

contact the drum.

2. When putting the master plane, shift the reverse guide

a little in the loading direction. Care must be taken since
excessive shift results in damage.

Note:
1. Check that the reel disk is lower than part A but higher

than part B. If the height is not correct, readjust the reel
disk height by changing the poly-slider washer under the
reel disk.

Note:
When the tension band ass'y is pressed in the direction of
the arrow for removal, the catch is hard to be deformed.

• Reassembly (Supply reel disk)
1. Clean the reel disk shaft and apply grease (SC-141) to

it.

2. Match the phases of reel disk and reel relay gear, and set

the new reel disk.

3. After checking the reel disk height, wind the tension

band ass'y around the reel disk, and insert into the hole
of tension arm ass'y.

4. Assemble the Supply main brake ass'y.

Tension arm ass'y

Supply reel disk

Take-up reel disk

Master plane

Reverse
guide

Position
pin

Take-up main brake ass'y

Supply reel disk

Cassette lock
release shaft

Take-up reel disk

Tension band ass'y

Supply main brake ass'y