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SECTION 2
SECTION 3
=
SAFETY RELATED ADJUSTMENT
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ADJUSTMENT
(SSM- 930 only)
e If CRT
is replaced, adjust follows.
e If
semiconductors
for
oscillation
and
synchronizing
The following adjustment should always be performed when
(SSM - 930)
circuit, or L701 are replaced, adjust as follows.
replacing the following component
(marked with [@ on the
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1. Receive
a monoscope
signal.(Use TSG- 100/MTSG- 1000
1. Receive a color-bar signal.
schematic
diagram).
Pattarn
generator SONY
Corp.)
2. CONTRAST: :+++++>
80 %
2. BRIGHTNESS
control:::-::
Maximum
BRIGHTNESS: ::::-
50 %
ital)
[4 on A BOARD : IC601
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CONTRAST control----:+:: Maximum
RV701 (H.HOLD) -- MECHANICAL CENTER
3. Adjust RV401 so that 40 IRE part in 10 step grey scale
3. Connect
the
electrolytic
capacitor
(10
wF/25
V)
may light dimly and that 20 IRE part may
cut-off.
between
the collector of Q501 and GND.
1. Supply
180
+1
—0
Vac
50 Hz
with
variable
auto-
h:
feAneiorner.
<monoscope
signal >
4, Adjust L701 so that disturbance
on the screen stops.
3. Set the PICTURE
control in to 80 % and BLIGHTNESS
control in to DETENT.
4. Confirm the voltage of TP1 (A BOARD) is less than
13.8 Vdc.
5. If step 4 is not satisfied, replace IC601 and repeat above
electrolytic
capacitor
(10 wF/25 V)
ssa +e
it
steps.
A Board
ut
: too low
fo = suitable
: too
WN
100 IRE
Adjustment point :
40 IRE (lights dimly)
A Board
Digital
20 IRE (cut-off)
RV4O1
multimeter
(SSM
- 930CE)
ICB01
[|
1. Receive 5 step stair case signal.(Use CCIR standard video
TPI
signal generator.)
|
O«
+
2. BRIGHTNESS
control:::-::
Maximum
L701
|
CONTRAST control:++++++: Maximum
=
3. Adjust RV401
so that second part from left may cut-off
and third part may light dimly.
< STAIR CASE >
Tt
fT
cut-off
lights dimly
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