Philips VS23605T - Electrical and Mechanical Adjustments; Power Supply and Time Base Adjustments; Picture Geometry and Intercom Adjustments

Wave
forms
VG
20,0,
sl
FS pe is0
10,0
16,5V de 20,8V de 5.0
V 0.00
-5,0
pao
10,0
-15,0
4,5V
de
650mV
de
-20,0
-
10 wS/ DIV ; 10 pS / DIV
80,0
60,0
40,0)
20,0)
V 0.00)
-20,0
-40,0
60,0
-80,0
5 pS / DIV 10S / DIV
e080 10 pS / DIV : 20 uS / DIV
26
Ti1
20
M2
200,0,
is
15 1,5 r
1,0 1,0 ,
05 05
V 0.00 V 0.00 .
-0,5) -0,5| -50,
-1,0 -1,0) -100,
-15 1,5 K
ae 20 uS / DIV sd 20 wS / DIV : 1 mS / DIV
2000 T14 a0 T16 508 T17
150.0 6,0 150,0|
100,0 4,0 100,0|
50,0) 2,0 50,0
mV 0.00 V 0.00) V 0.00)
-500
-2,0
-50,0
-100,0 -4,0) -100,0
-150,0 -6,0) -150,0
"ene 100 nS / DIV ve 20 yS / DIV ore 20 pS / DIV
2600 T24
150,0
100,0
50,0
V 0.00)
k -50,0)
-20, -100,0
-30, +150,
3800 5 mS / DIV : 5 mS/DIV me 20 yS / DIV
_
125
ead
730
29
ue
60,0 150,0| 15
40,0 100,0) 1,0
20,00 50,0 05
V 0.00 V 0.00 V 0.00)
-20,0) -50,0) -0,5)
-40,0 -100,0} “1,0
-60,0) -150,0 “1,5
“S08 20 pS / DIV ; 2m. 20 yS / DIV as 20 yS / DIV
ae T34 AY T39
600 6,0
400 40
200 2,0
mV 0.00 V 0.00)
-20,) -2,0
40,0) -4,0)
-600 6,0)
oat 2mS/DIV . 2mS/DIV a8 100 nS / DIV
PCS 97 072 GB
VIDE-VO0699 / DRUCK 6
8.
2.1
3.1
Electrical & mechanical adjustments
General 3.2
¢ All controls in the minimum position unless otherwise
specified.
¢ Test signal: From pattern generator (PM 5544, circle),
applied via capacitor of 4.7nF for DC blocking.
¢ The monitor should be warmed up for about
2 minutes.
Power supply
4.1
Adjustments of the +24V Volt
¢ Connect a DC voltmeter to TP +24V
¢ Switch on the monitor.
¢ Adjust potentiometer 3117 so the voltage reads
24,2 Volt DC (+ 0,2 Volt)
Time base
Frame amplitude
¢ Apply a “Circle” with a pattern generator on Video-
in-VCR and switch to VCR.
¢ Set al controls in the middle position.
¢ Adjust potentiometer 3413 until the vertical size of the
circle is the same size as in horizontal direction.
7110
Picture geometry
¢ Rotate the deflection coil around the neck of the
picture tube until the sides of the picture are in
parallel with the mask.
¢ Adjust the centring magnets until the picture is
symmetrical relative to the mask.
Carrier wave for intercom functions
Carrier wave adjustment
¢ Connect a frequency counter via a capacitor of 1 pF
to the emitter of 7800.
* Tune the core of the coil 5810, while pressing the talk
button, until the frequency counter measures
6.200.000 Hz + 5 kHz.
3117