Table of Contents
Advertisement
VIF Adjustment
item
Detector Adj.
Overall Waveform Adj.
DC 15V
R368(C364
side)
R368(C364 side)
IF AGC(3.5-4.5V)
IC101 - pin48
IC101 - pin48
.:
BAND
VH (Q782 and Q784-Base +
VH (Q782 and Q784-Base * Ground, through 1k
g
Ground, through 1k !2 resistor)
S2resistor)
E
Output Probe
Tuner- TP
Tuner- TP
~
Input Probe
Q1 22-Emitter
Q1 22-Emitter
TU 12V
Tuner-TU
Tuner-TU
Dumping Resistor
Not used
100 S2Dumping Resistor+
RI 24
":
$weep ATT.
25 dB
25 dB
g
Output Probe
side b
side b
:
Oscilloscope
Sens,
10OmV/DIV
10OmV/DIV
u
Adjust P (38.9MHz) to be
By using tuner converter coil and T1 01, adjust the
Adjustment
maximum amplitude
by using
marker position to be P(36,875MHz)=45Y0
f 10YO,
T121.
C(32.445MHZ)
=45~o
* 10%
Waveform
A
~~p
)
00
w
Input Probs
*
allm"
/
IC790
MEMORY
DC
15V
o~~'
C364
IC351
Detector Adj.
:9
100Q
Resistor
R368
Ion
IC352
Dumping
VR351
j'i
Q
KDY
VR462
-
)
d
Overall Waveform
Adj.
@
TP-D
d
@ T101
/
Output Probe
0702
-Y
ma
pin-48
0':
'-
" .~:;a
'
'=
AGC
02030
w
B
Q245
B
I_lo
/l_z5&l
0761
w
(VHF
High Band Setting)
!?2p'v7
I
IC451
o
TELETEXTUNIT
(ModelC25ZG56 only)
kzsl
L—
IC671
+5
VERT.
AMP.
0
w
7P-A
I
1
t
(9
Q61O
q
DC
12V
.:::,,:
Tu
..*
t
0763
w
I
VR451
-
(VHF High Band Satting)
m-
—
00WN ~
UP
lKQ
VERT. CENTER
–8–
Advertisement
Table of Contents
