Sharp VC-S1000G Serviceanleitung Seite 44

VC-S TOOOG{BK)
VE-:S-1000S(BK)
|. terminal (OPEN) and'play back the tape' Check
adjustvthe signal at TP201; by R2T Tat first, "Fur-
ther adjust R211 'repeatedly until the 'signal 'at
Measurin ee
| instrument
ss Oxallescope
: | FP3304-TP3302 Gr: Fead-—
amplifier unit) :
j Specification Of
Measuring
instrument
| No signal (carrier)
- | Colour bar signal .
(deviation)
TP306 carrier
TP201 deviation
R206: VHS carrier contro!
::.| R202:,. VHS deviation».
- control
1} Adjustment of VHS. FM carrier 2
Select 'AV mode (no video signal) and: set thie
record mode select: switch to NORMAL. Load the
S-VHS self-recording tape. and set the unit to REC
_mode..With. a frequency. counter connected to
TP306, adjust R206. so that the frequency 'cou nter
indicates 3.86 MHz. °
2) Adjustment.of VHS frequency deviation
Select AV mode (video colour bar) and set the
record mode sélect switch to NORMAL. Load the
S-VHS self-recording tape and set the unit to REC
'mode.: Connect an oscilloscope to;.TP201.-and
record: the signal level shown on the oscilloscope.
Ther, connect the 'oscilloscope to the VIDEO OUT
terminal (OPEN): and'. play. back the: tape, Cheek
__ that the oscilloscope indicates 2: 0 Vpp. 'if the : sig-
__hal_arnplitude deviates' from 20° VPP, coarsely
~"adjust the signal' at. TP20T. 'by, R202" at "first. "Fur-
"ther. ajdust' R202. 'repeatedly until the signal at
'the VIDEO OUTPUT terminal. becomes 2. 0. Vpp
exactly. 3
Input signal __
Test point
Specitication
Red level
"Figure. 2-20.
Adjigunent: of pilot burst level
Measuring
instrument Oscilloscope
Mode LP recording mode (5- VHS)
Input signal -
Colour-bar: mane. (line: input
'terminal)'
1R5533 (Pilot bunt evel:
control )
Specification
+2 mVpp of normal colour
burst signal level