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+11V Line (on-N-Board)}
+11V-Leitung (auf N-Platte)
SIF Sweep Generator
TZF Kippgenerator
Che
earth |
Erdung
0.01 UF
earth
Cre Erdung
0.0047UF
1OKQ
Low Light Control
Tiefenregler
Sub Contrast Control (R321)
Grundkontrastregler (R321)
Sub Bright Control (R328)
| Grundhelligkeitsregler (R328)
Service Switch ($301)
Service-Schalter (S301) @gpeteee
~~ AGC bias
i
_Vorspannung der
-—
Automatischen
Verstarkungsregelung
(AGC)
«BKB
BaF ; ppgensrator aS
--U31 (on-U-Board)
|
| U31 taut U- Platte)
} Aufsicht
"N-Board
N-Pltatte -
ATEST POINT
A Testpunkt
U-Board
AJ-Platte
Fig.7
= Abb. 7
Sync. ADJ. (RO20)
;
SYNC.-Detektor-Einst.({RO20)
V. Size Control (R044)
VHF-Balkenabstand-Regler (R044)
U. Size Control(RO94).
:
UHF-Balkenpositions- Regler (R039)
V. Centre Control (RO36)
|
VHF- -Balkenpositions- Regler (RO36)
___U. Centre Control (R039):
_ UHF-Balkenpositions- Regier (RO39)
Focus Contro!
Drive Control
Sh
ee uch "ad
Drive-Regler
Dis me
are
Fokusregler
Saat
y 2
Screen Control
DC Power Socket (J801)-
Gleichspannungs-
-Anschlu&buchse (J801)
H. Centre Control (R521) .
Horizontalzentrierregler (R521)
V. Hold Control (R407)
Vertikal-Bildfangregler (R407)
Contrast Control (R342)
Kontrastregler (R342)
Schirmgitterregler
V. Height Controi{R411)
BildhGhenregier (R411)
B2 ADJ. (R804)
B2-Einst. (R804)
ADDP ADJ. (R809)
ADDP-Einst. (R809)
Colour Contro! {R606)
~ Farbregler (R606)
Brightness Control (R345)
Helligkeitsregler (R345)
"Fig:8 Abb. 8
'VIE Syeep Generator =
U/V Tuner Top * Views |
on
ed
'1. Test equipment connection | is s Shwe
14, Connect R-jumper (100Q) peuneen
:
pout
Sere
ie
ee
ee
Sots
Se
EH
ay.
CURB
SE Pcp
te
Hage
PRE
ae 7 ae
ec
ee
ne
e c
a
¢
3
TIS
ewer yan
:
a
+ 4 "Adjust' AGC bias voltage for maximum
[3 amplitude of waveform. x .
|
2.,.Adjust the level of sweep marker
generator to achieve 1Vp-p output. _
Sheen pet
a e d
oe Increase the output of sweep marker
DC 11V to +11V line (on N- Board)
| "generator t by 20 dB.
|
_ DC 15.5V to TPN2
ek
sacks ka
jo AGC bias voltage to achieve
5: Set core of L102 to lower side ce
TPA3 and TPA4.
|
detuning it.
_
8. Adjust Helical transformer (IN, OUT)
in Fig. 7:
VO
AA Aiehy nar a
2. Supply AGC | Bias voltage to > TP14.. |
3, Supply DC power source >
DCA. 5VtoTPISR
_
a Vp -p ) 100%
\
Picture |
Carrier
|
38. 9
40.4 ee
vi OVPLIG
Be
teantiié
40.4 MHz 31.9 MHz
Helical
=|
Transformer
1.. Test equipment connection in Fig. LS
2. Supply DC 11V to 71V line e
a
(on N-Board).
ae
3. Set sound:control (R257) at the
_
maximum position.
© 9 °
4. Connect short jumper between ©'
TPU3 and earth.
. Set the output of sweep oe
at"
—700mVp-p.
2: Adjust T201 to achieve the waveform
as in Fig. 11.
,
3. Observe that top and bottom the .
waveform of are symmetrical within
straight line between +150 kHz and
—150 kHz and. no within a range of
+ 100 kHz.
4. Observe spurios between +150 kHz
and —150 kHz is more than 1.0V.
—
More than
[Contrast
1. Receive colour bar signal.
. Set controls:
27V +. 1Ve w
Colour Output
1. Set Tuning selector (SO01) to
2.0V + 0.1 Vo-p
1. Set controls:
TP47G (G-Y) 1.8V + 0.3Vp-p
he
yt
_ee,
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