GV 29 EURO, GV 9300 EURODrive Mechanism
� Checking the drive mechanism from the bottom:
5. Checking the Mechanism Mode Positions
As shown in Fig. 5.4, the respective marking line with indication and
Note: When checking the mechanism mode positions without ahexadecimal figure of the mechanism mode position can be seen
cassette being loaded take care that the opening lever for thefrom the crescent slide (Pos. 60600) at the edge of the mechanism
cassette lid (Pos. 040E) is unlocked (Fig. 5.1).chassis which is used as the reference line.
Note: No marking line is provided for the INITIAL mode because
this function is near to the IN REW mode and so cannot be
Cassette mechanismindicated either.
The edge of the crescent slide mounting
is the reference-line
Crescent slide mounting
Stand, l 6FF/REW
6: FF/REW
4BRAKE
4: BRAKEdeutsch Y German Y allemand
5PLAY
3/STOP
Lever, lid openerSTI5: PLAY/STOP
Fig. 5.12LL3: STILL
IDL
1ER2: IDLER
REV
IEW1: REVIEW
5.1 Determination of the Mode Positions on the Crescent Slide
(R-SEARCH)
The marking lines and symbols on the top and bottom side of the
crescent slide (Pos. 60600) show the mechanism mode positions and
IN REW
their hexadecimal figures.
IN
EJC: EJECT
EJCREW
� Checking the drive mechanism from the top:
As shown in Fig. 5.2 and 5.3, the respective marking line with
indication of the mechanism mode position can be seen from the
crescent slide (Pos. 60600) at the edge of the mechanism chassisFig. 5.4
which is used as the reference line. The hexadecimal figure of the
mechanism mode position can be checked from the hole in the
5.2 Operating the Mechanism by Hand
mechanism chassis.
� Dismantle the drive mechanism (see service notes on page 1-19).
Note: No hexadecimal figure is indicated for the EJECT position.
� The mechanism operating modes can be checked by rotating the
Instead, the hole will be empty. No hexadecimal figure is
worm gear (Pos. 60200) at the loading motor (Pos. 60100) or by
indicated for the IN REW mode because it is near the INITIAL
rotating the gear wheels (Pos. 60300, 60400 and 60500) with the
mode and so cannot be indicated either. For the same
worm gear (Pos. 60200) removed (Fig. 4.3).
reason, there is also no marking line for the INITIAL mode.
Note: The arrow marked on the loading motor (Pos. 60100) indi-
Take this edge as the reference-linecates the sense of rotation for the worm gear (Pos. 60200)
to reach the EJECT position.
6. Operating the Mechanism in the Service Test Mode
The Service Test Mode is a special function for servicing allowing the
mechanism functions to be checked and the cassette tape to be
ejected forcibly.
As soon as the VCR is set to the Service Test Mode, the channel
display on the display tube changes to a 2-digit hexadecimal figure
(Fig. 6.1). Some of these figures correspond to the marking lines on the
crescent slide (Pos. 60600) making it possible to check whether the
mechanism mode position is identical with the mode switch S8001.
Indicates
Indicates the
HEX DATA
mechanism mode (HEX DATA)
Fig. 5.2
EJECTIN REW
REVIEWIDLERSTILL/SLOWPLAY/STOPBRAKE
FF/REW
Fig. 6.1
PB
EJECTIN REWBRK
REVIDLSTLFF/REWEJECTThe overview of the operating modes Fig. 7.1 shows the switching
INITIAL
sequence of the individual operating modes.
7The respective output signal at the mode switch S8001 can be seen
from the table Fig. 7.3.
REVIEW
1IDLER
2STILL/ SLOW
3PLAY/STOP
5
4BRAKE
6FF/REW
Fig. 5.3
GRUNDIG Service5 - 19 k |
ACEC
