Sif Alignment; Audio Board - Sanyo CE28DF1-C Service Manual

SIF ALIGNMENT

10kΩ
Input probe
DC 12V
AGC voltage (DC 5V)
Output probe
Input probe
Sweep ATT
Marker Frequency
System
Adjustment
VIF waveform

AUDIO BOARD

IC101
T001
0.002µF
a
75Ω b
1kΩ
Output probe
FM DETECTOR-1
KOH - PIN 5
IC002-pin 13
IC002 - PIN 5
(Side a)
IC002-pin 17
10
38.9MHz
1.By using T003, adjust "P"
to be ± 100KHz
frequency
P
T003
T002
IC102
103P
0.01uF
FM DETECTOR-2
KOH - PIN 5
IC001 - PIN 21
IC001-PIN 15
(Side b)
IC001-pin 16
(Condition)
Carrier frequency: 5.5MHz
Modulation frequency:
1kHz(sine waveform)
B/G (See note)
By using T002, adjust DC
level to be 1.7V.
1.7V
DC=0
FM Detector-1
FM Detector-2
-9-
KOH - PIN 5
IC1001 - PIN 21
IC001-pin 19
(Side b)
IC001-pin 18
(Condition)
Carrier frequency: 5.74MHz
Modulation frequency:
1kHz(sine waveform)
B/G (See note)
By using T001, adjust DC
level to be 1.7V.
1.7V
DC=0
NOTE:
How to set system B/G
* KOH - 1, Connect to 5V
* KOH - 2, Connect to
chassis earth.