General Section
GV 26 EURO, GV 6000 EURO, GV 6300 EURO
1 - 16
GRUNDIG Service
Service Test Programme and Special Functions
1. Service Test Programme
Calling up, Checking the Levels of and Terminating the Service Test
Programme
The service test programme can be called from any tape drive function
other than the data entry functions (station search, ...). While it is
operating in the service mode, the VCR remains fully operational in all
tape drive functions.
• Calling up the Service Test Programme
Press the
■
(STOP) button on the remote control and the
e
(Play)
button on the video recorder in that order and hold them down for at
least 5 seconds.
The display will then show the values of Level 00.
• Checking the Levels of the Service Test Programme
The service test programme is made up of the following levels:
Level 00
– mask no. of the tape deck and keyboard control
computer
Level 01
– tape deck position
Level 02
– error code and error status / VCR function
Level 03
– man. tracking, tape deck sensors and VCR function
Level 04
– operating hours meter
Level 10
– tape deck sensors and VCR function without drive to
the tape deck
Level 40
– VCR option codes
Level 51
– headwheel position indicator adjustment
Level 52
– ACC adjustment (Automatic Contour Control, option)
Level 53
– timer clock adjustment
Level 99
– timer clock output
Level Selection
– Before selecting the adjustment levels (51…53) remember to
prepare the respective level first (see description of the individual
levels of the service test programme given below).
– Press the "SELECT" button on the remote control. The indication
of the level flashes on the display.
– With the "+" or "-" button switch over to the respective level or
select the desired level directly with the buttons "0…9".
– Confirm the entered figures with the "SELECT" button. The
number of the selected level is visible on the right of the display.
On selction of an unused level the indication "--" flashes on the
display.
On selection of an incorrectly prepared adjustment function the
test programme is stopped.
• Terminating the Service Test Programme:
Press the
8
"STANDBY" button or disconnect the VCR from the
mains.
Levels of the Service Test Programme
Level 00: Mask No. of Tape Deck and Keyboard Control Computers
The mask number of the individual computers is indicated as follows:
MAN
LP
VPS PDC
2
1
TIMER
STOP
Tape Deck Computer
Keyboard Control Computer Level
Level 01: Tape Deck Position
The tape deck position code indicates the position of the cassette
compartment and of the threading roller units.
MAN
LP
VPS PDC
2
1
TIMER
STOP
Tape Deck Positions
Code
Eject
05…09
Index
5C…5E
Stop threaded out
62…6A
Play position
D2…DA
Play reverse
ED…EF
Level
– Tape deck position and function of the Init switch
The diagram shows the function of the Init switch dependent on the
tape deck position. For this, the number of the threading tacho
pulses (FTA) is important. These signals are generated by the
threading tacho generator (butterfly sensor) which is mechanically
connected with the threading motor.
AC, 2V/Div, 0,5s/Div
Cassette in
Cassette down
Half the tape threaded in
Tape threaded in
Play
Threading pulse (FTA)
Init switch
Level 02: Error Code and Error Status / VCR Function
The last error status and error code that occurred is stored in the Timer
RAM and is saved even if the VCR is disconnected from the mains. The
data can be cleared by pressing the "CLEAR" button on the remote
control.
MAN
LP
VPS PDC
2
1
TIMER
STOP
Drive Mechnism Error Code
0
No Error
1
Threading error
2
No capstan tacho
3
Tape torn
Level
4
Missing left reel tacho (option)
5
Missing right reel tacho
6
Headwheel motor error
Drive Mechnism Error Status / VCR Function
012 Standby
014 Tracking
031 Picture search reverse (3x)
034 Slow reverse
041 Still
042 Picture search forward (3x)
044 Picture search reverse (9x)
045 Threaded out
046 Picture search forward (9x)
047 Play reverse
048 Record – Pause
050 Rewind
052 Wind
053 Play
054 Stop
055 Record
112 Next index
113 Previous index
114 Write VISS marks
115 Clearing VISS marks
125 Tuner
126 Auto Remain
130 ATTS
168 Frame forward
169 Frame reverse
170 Picture search reverse (11x)
171 Picture search reverse (7x)
172 Picture search reverse (5x)
173 Picture search forward (5x)
174 Picture search forward (7x)
175 Picture search forward (11x)
196 EE mode
197 Standby Eject
199 Audio Dubbing
202 Audio Dubbing Pause
206 Reset Tapecounter
211 Slow (1/24)
212 Slow (1/14)
215 Slow (1/7)
216 Slow (1/2)
217 Slow reverse (1/24)
218 Slow reverse (1/14)
219 Slow reverse (1/7)
220 Slow reverse (1/2)
222 Sychro-Edit-Record
223 Auto Gap Position Adjustment
238 Pause
239 ACC Adjustment
246 Synchro-Edit-Pause
247 Slow (1/10)
248 Slow (1/18)
249 Slow reverse (1/10)
250 Slow reverse (1/18)
253 Keyboard Enable
– Monitoring the tape deck functions
For monitoring the tape deck functions the tape deck is fitted with
sensors which supply the following tacho signals according to the
functions:
– WTR – reel right
– WTL – reel left (option)
– FTA – threading tacho
– FG – capstan motor
– PG/FG – headwheel motor
When one tacho pulse is missing during the operation of the tape
deck, the VCR tries to move the cassette compartment to the
"EJECT" position.
Level 03: Man. Tracking, Tape Deck Sensors and VCR Function
– Manual tracking
The tracking position in the service test programme is set to mid-
position. Pressing the "TRACKING" button first it is possible with the
"+" or "-" button to change the tracking position to the required
position for tape transport adjustment (see chap. 5 – Tape Deck) .
– Tape deck sensors
For checking the tape deck sensors (Init switch, threading tacho,
tape start, tape end, record lock, winding tacho left / right) the
operating positions are indicated on the display by means of one
digit. The indicated value changes with each operation of the
sensors.
