Sony CA-550, Maintenance Manual, Page: 34 / 114

3-6 (E)
CA-550
CA-550P
3-3-6. INCOM DEVIATION Adjustment
Equipment : Spectrum analyzer
Audio generator
Preparations :
• SW1 (INCOM MIC SEL)/AU-211 panel
→
D
• Feed an 1.0-kHz, -60 dBu (2.2 mVp-p) sine wave signal
from the audio generator to the INCOM connector on the
CA-550/550P. (Refer to Section 3-1-3 “Connection —
For audio adjustments”.
Test Point :
TP1/TR-90 (E-2)
Adjustment Point :
1
RV1 (INCOM DEV)/TR-90 (E-4)
Specifications : A = 20.0
±
0.8 kHz
3-3-7. DATA RF Adjustment
Note :
• Use a plastic core driver to adjust
1
LV.
Equipment :
Spectrum analyzer
Test Point : TP5/TR-90 (F-2)
Adjustment Point :
1
LV4 (5.6 MHz)/TR-90 (F-2)
Specifications :
Center frequency 5,600
±
5 kHz
TR-90 BOARD (COMPONENT SIDE)
A
1 2 3 4
B
C
D
E
F
G
TR
RV1
TP5
TP1
LV4
3-3. TR-90 Board Adjustment
CENTER FREQ 7.1 MHz
SPAN 50 kHz
RBW 1 kHz
Note :
After the adjustment is complete, be sure to return SW1/
AU-211 to C position.
CENTER FREQ 5,600 kHz
SPAN 100 kHz
RBW 1 kHz