Sony GV-A500E, Service Manual

Page: 77 / 127

5-18
3-1-7. Input/Output Level and Impedance
Video input/output
Phono jack, 1 Vp-p, 75
Ω
,
unbalanced, sync negative
S video input/output (Hi8 model)
4-pin mini DIN
Luminance signal:
1Vp-p, 75
Ω
, unbalanced, sync negative
Chrominance signal:
0.3Vp-p 75
Ω
, unbalanced
Audio input/output
Phono jack,
Input:
–7.5 dBs, input impedance more
than 47 k
Ω
Output: –7.5 dBs, (at load impedance 47 k
Ω
), impedance
less than 2.2 k
Ω
3-1-8. Recording Mode (Standard 8/Hi8) switching
The record mode (Standard 8/Hi8) of this unit switches as shown in
the following table. The playback mode (Standard 8/Hi8) switches
automatically according to the recording mode of the tape played
back.
Tape Used Recording Mode
ME
Hi8
Hi8 MP
MP Standard 8
3-1-9. Service Mode
Additional note on adjustment
Note : After the completion of the all adjustments, cancel the
service mode by either of the following ways.
1) Unplug the main power supply and remove the lithium battery.
(In this case, date and time and menu setting have been set by
users are canceled. Perform resetting.)
2) After data on page: D and F is restored, return data of the
address: 01 on page: 0 to 00. And when data on page: 2 or
page: 3 is changed, return the data to the original condition.
1. Test mode setting
Set/release each test mode. Set page: 0, address: 01, data: 01 before
setting the data of page D and F.
Page F Address 29
Data Function
00 Normal
01 Test mode
Various emergency prohibitions and releases Drum
emergency, capstan emergency, loading motor
emergency, reel emergency, tape top and end, DEW
detection
Page D Address 10
Data Function
00 Normal
01
02 VTR power ON
03
* For page D and F, the data set will be recorded in the nonvolatile
memory by pressing the PAUSE button on the adjusting remote
commander. Take note that, in this case, the test mode will not
be released even if the main power has been turned off (7.2
Vdc).
* Be sure to return this address data to 00 after completing
adjustments/repairs and press the PAUSE button of the adjusting
remote commander. And set page: 0, address: 01, data: 00.