Service Test Programme - Grundig GV 640 NIC Betriebsanleitung

Service Test Programme & Special Functions
Service Test Programme & 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
Carry out the following steps with the remote control handset:
– Press the "CODE" button repeatedly until "CODE ----" is indicated
on the display.
– Enter the numbers 4 9 3 4 successively and confirm with G
– The display will then show the values of Level "OO".
• Checking the Levels of the Service Test Programme
The service test programme is made up of the following levels:
Level 00 – software version
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 05 – bus communication error indication
Level 10 – tape deck sensors and VCR function without drive to
the tape deck
Level 40 – VCR option codes
Level 41 – changing the VideoPlus code numbers (guide channel)
Level 51 – headwheel position indicator adjustment
Level 52 – ACC adjustment (Automatic Contour Control, option)
Level 54 – ATS adjustment
Level 55 – crosstalk adjustment (coarse)
Level 56 – crosstalk adjustment (fine)
Level 57 – follow TV adjustment
Level 58 – playbayk level adjustment
Level 61 – audio envelope adjustment
Level 98 – display test
Level 99 – clock adjustment
Level Selection
– Before selecting the adjustment levels (51, 52, 54...58, 61, 99)
remember to prepare the respective level first (see adjustment
procedures, chapter 3).
– Press the "CODE" button on the remote control. The indication of the
level flashes on the display.
– With the C or D button switch over to the respective level or
select the desired level directly with the buttons 0...9.
– Confirm the entered figures with the "CODE" 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.
• Terminating the Service Test Programme:
Press the "STANDBY" button or disconnect the VCR from the
mains.
Levels of the Service Test Programme
Level 00: Software Version
The software version of the individual computers and of the EPROM
can be called up with the button D (or C) and is indicated as follows:
PROG START
SEC PAL C+
SAT DATE
EPROM
Software Version
PROG
START
SEC PAL C+
SAT DATE
µ
Tape Deck P
Software Version
PROG START
SEC PAL C+
SAT DATE
µ
Keyboard P
Software Version
2 - 4
Level 01: Tape Deck Position
The tape deck position code indicates the position of the cassette
compartment and of the threading roller units.
– Tape deck position and function of the Init switch
Level 02: Error Code and Error Status / VCR Function
The last error status and error code that occurred is stored in the
EEPROM 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.
STOP
VPS
PDC
Level
STOP
VPS
PDC
Level
STOP
VPS
PDC
Level
GV 64 ..., GV 65 ..., GV 66 ..., SE 6106 HiFi
PROG START
SEC PAL
C+
SAT DATE
Code Tape Deck Positions
005...009 Eject
189...191 Wind/Rewind
196...204 Stop
207...215 Play position (with reverse kicker)
209...217 Play position (without reverse kicker)
237...239 Play reverse
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
Drive Mechnism Error Code
0 No Error
1 Threading error
2 No capstan tacho
3 Tape torn
PROG
START
SEC PAL C+
DATE
SAT
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 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)
STOP
VPS
PDC
Level
Init switch
Threading pulse (FTA)
Play
Tape threaded in
Half the tape threaded in
4 Missing left reel tacho (option)
5 Missing right reel tacho
6 Headwheel motor error
STOP
VPS
PDC
Level
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 Record – 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
GRUNDIG Service