Philips D2935 - Alignment and Measurement Procedures; DC Voltage Test Points; Frequency Tuning and Alignment

CS 98 772
= 0. FST s_
REGULATOR VOLTAGE (DC)
BIASING VOLTAGE (DC)
AM—FM V-—TUNING VOLTAGE (DC)
3
29999 KHz 3 5122 7.25240. ere
11650 KH -6+0. | 1.60.4V
p some [1g
7 Tiere 5] OE 7.2520.
SYNTHESIZER pcs &]
2ND AM IF-468 KHz
hye symmetrical
468 KHz* MAX. i
5119
(3) zero beat at middle of
SW 468 KHz* | 5120 >
468 KHz band pass curve
2ND AM OSCILLATOR -54.532 MHz
:
ow
2.3
MHz*
2300
KHz
5106
©
until
set
is
working
via
15pF
1ST AM IF
DE :
2.3 MHz* 2300 KHz | &>
xa f@—| OL t[ZLO [ES
AM IMAGE RATIO REJECTION |
pl sf] | ase
AM IF ABSORBTION FILTER
468 KHz* 468 KHz 5113 min
via 15pF
FM IF ~ 10.7MHz
5104 symmetrical
ee y MAX. / _
87.5 Maz* ye: Cy ee Ks»
eka ae
FM
FM RF
t repeat
* mod:1 KHz ‘30%
[1 Juse ground Gl [8 Juse ground G5
(2 ]Juse ground G2 [9 ]sx-p (BFO) pos. 'ON'
[3 ]26100 KHz for -/02
[4 Juse ground G3
[s]a11 DC voltages must be correct before dignment [ro]use ground GB
and better use and high-ohmic FET Probe
VR1019 (BFO CONTROL) pos.
Aerial switch pos.'TELES.'
[6 Juse ground G4 use ground GC
[7 ]Juse ground GA C2133 pos.'MIDDLE'
TT Ke (oles
iol el
(©)
2113
[Q]s119
(QJs120 5118
@2317
VR1018 (AM GAIN CONTROL) pos. 'Max'