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HITACHI
HT-MD40
[Auto Mechanism Type
PZ-11]
LIST OF SERVICE
POINTS
(The item numbers correspond to those in Fig. 12)
Part Name
Disassembly
Procedure
1
Auto mechanism
Ass'y
@ Remove the two operation wires
from the set and a microswitch
from the auto mechanism
ass'y.
@ Remove the screws fixing the auto
mechanism
ass'y.
ak
2
Cycle plate OS
After removing parts such as the
motion gear and tonearm feed cam,
remove the cycle plate OS by shifting
it to the outer side.
3
Start lever
4
Spring SCC
5
Manual
lever
6
Cueing cam
7
Spring
9
Return lever
Slide link
Motion gear ass'y
8
Switch lever
Remove by opening the claw a little.
Remove the hook.
Remove by opening the claw of the
unit plate OS a little.
Remove by opening its claw a little.
Remove the hook.
Remove by bending the hook on its
center a little.
Remove by opening the claw of the
unit plate OS a little.
Remove by opening the claw of the
unit plate OS a little.
Open the claw of the unit plate OS a
little, and remove while lifting the
turntable gear ass'y.
Assembly Procedure
@ Point the motion gear ass'y in the
@ Point the feed pawl in the direction
@ Place the pickup of the set to the rest
@ Mount the auto mechanism ass'y on
© Secure the screws.
© Connect the two operation wires.
@ Mount the microswitch.
(Insert it
When assembling,
reverse the order on
the left.
the left. Pay attention not to apply grease.
order on the left.
direction shown
in Fig. 14.
shown
in Fig. 14.
position.
the set. (At this time, check that
follow-up level pin ® is inserted in the
manual
lever.)
Check that the pickup moves to the
right or left smoothly.
securely.)
(Check that the switch lever activates
to the microswitch.)
When assembling, reverse the order on
(Wipe grease if it is present.)
After applying the pin of the cycle plate
OS on the cam groove on the back of the
motion gear, assemble by reversing the
12
Tonearm
feed cam
Remove after taking the control cam | Insert the round pin on the back of the
stud out.
tonearm feed cam
into the U-shaped
groove of the cycle plate OS, then insert
the control cam stud.
13
Feed pawl
Remove by slackening the feed paw!
| When assembling,
reverse the order on
spring.
the left.
14
Feed pawl spring
Remove by slackening.
15
Lever, SC detection
Remove by bending its arm a little.
16
Cam, auto size
Remove by opening the claw of the
unit plate OS.
a
17
Lever
Remove by opening the claw of the
unit plate OS.
18
Spring
Remove after disassembling the set
lever.
Cam, auto in
Remove by opening the claw of the
unit plate OS a little.
——_+
Spring
Remove the hook.
Control cam stud
Spring switch
Remove using a small screwdriver
or pliers.
——}—_
Insert by hand.
Remove the hook.
Assemble the hook pointing it inthe
direction shown
in Fig. 13.
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