Disassembly/Assembly Of The Mechanism Assembly; Introduction - JVC SR-VS30U Service Manual

2.5 DISASSEMBLY/ASSEMBLY OF THE MECHANISM
ASSEMBLY
2.5.1

Introduction

The disassembly and assembly of the mechanism assem-
bly should usually be performed in the ASSEMBLY mode.
(Table 2-5-1)
Note that the mechanism is in the cassette in (C-IN) mode
when the mechanism assembly is taken out of the set and
that the C-IN mode should be switched to the ASSEMBLY
mode in this case.
MODE
PARTS
1
ROTARY
2
ENCORDER
3
R. ENC
MAIN CAM GEAR
2.5.2 Mechanism Modes
The mechanism has 6 modes as shown in Table 2-6-1. The
current mode can be confirmed by the positioning of the "
marking on the sub-cam gear and the " " marking on the
mechanism.
See the following figures (Figs. 2-5-1 to -6) for details.
Note:
• This mechanism assembly has another ASSEMBLY
mode. However, this mode cannot be identified from the
markings because it corresponds to an intermediate po-
sition between the C-IN ( C ) mode and S-FF ( H ) mode.
This mode can be confirmed by the rotary encoder
phase. See Fig. 2-5-7.
1. Checking the mechanism mode
C
H
Fig. 2-5-1
R
Fig. 2-5-4
ASSEMBLY
C-IN S. FF
-20 0 33.33
0 15 40
Table 2-5-1
"
Fig. 2-5-2
Fig. 2-5-5
To set the ASSEMBLY mode, apply 3 V DC to the electrodes
on the upper part of the loading motor as shown in Fig. 2-5-
7.
LOADING END
PLAY
166.66 193.33
140 160
H
S
REV STOP FF/REW
226.66 273.33 306.66
185 220 245
P
Fig. 2-5-3
F
Fig. 2-5-6
2-21