Read Sony ICF-CD553RM Service Manual online
11
ICF-CD553RM
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
450 kHz
AM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L6
530 kHz
1.0
± 0.05 V
Confirmation
1,710 kHz
5.3
± 0.7 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L5
580 kHz
CT5
1,490 kHz
FM/TV/WEATHER IF ADJUSTMENT
Adjust for a minimum reading on level meter
T2
10.7 MHz
FM/TV (2 – 6 CH) VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L4
TV 2 ch
0.55
± 0.15 V
CT3
108 MHz
4.5
± 0.15 V
FM/TV (2 – 6 CH) TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
TV 2 ch
Confirmation
108 MHz
TV (7 – 13 CH)/WEATHER (1 – 7 CH) VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L3
WEATHER 2 ch
1.2
± 0.15 V
CT4
TV 13 ch
4.1
± 0.15 V
TV (7 – 13 CH)/WEATHER (1 – 7 CH) TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
WEATHER 2 ch
CT2
TV 13 ch
Adjustment and Connecting Location: TUNER board
(See page 12)
TUNER SECTION
0 dB=1
µ
V
[AM]
Setting:
Function: RADIO
Band: AM
Function: RADIO
Band: AM
[FM/TV/WEATHER]
Setting:
Function: RADIO
Band: FM/TV/WEATHER
Function: RADIO
Band: FM/TV/WEATHER
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer ca-
pacitors.
pacitors.
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
modulation by
400 Hz signal
Output level:
as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
+
–
–
level meter
set
6
Ω
AMP board
CN301 pin
CN301 pin
2
AMP board
CN301 pin
CN301 pin
1
FM RF signal
generator
75 kHz frequency
deviation by 1 kHz
signal
Output level:
as low as possible
deviation by 1 kHz
signal
Output level:
as low as possible
+
–
–
level meter
AMP board
CN301 pin
CN301 pin
2
AMP board
CN301 pin
CN301 pin
1
set
6
Ω
0.01
µ
F
TUNER board
TP (GND)
TP (GND)
TUNER board
TP (ANT)
TP (ANT)
digital voltmeter
TP (VT)
TP (GND)
100 k
Ω
TUNER board
SECTION 5
ELECTRICAL ADJUSTMENTS
Click on the first or last page to see other ICF-CD553RM service manuals if exist.