Sony ICF-CD863V Service Manual ▷ View online
ICF-CD863V
10
5
two screws (BV3
×
10)
5
two screws (BV3
×
10)
6
box (SP) assy
5
two screws
(BV3
(BV3
×
10)
4
four screws (BV3
×
10)
3-10. BOX (SP) ASSY
2
Lift up the AMP board in the
direction of the arrow.
direction of the arrow.
3
connector (CN353)
1
three screws
(BV3
(BV3
×
10)
ICF-CD863V
11
3-11. SPEAKER (8.2 cm) (WOOFER) (SP301), BOX (SP)
4
four screws
(PTPWH3
(PTPWH3
×
10)
5
speaker (8.2 cm) (woofer)
(SP301)
(SP301)
3
Remove the speaker lead wire
from the groove of the box (SP).
from the groove of the box (SP).
2
Remove the rubber from the
groove of the box (SP).
groove of the box (SP).
1
cushion box (SP)
6
box (SP)
12
ICF-CD863V
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
RV2
1,000 kHz
AM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L1
530 kHz
2.3
± 0.05 V
Confirmation
1,710 kHz
8.7
± 1.0 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L5
580 kHz
CT1
1,490 kHz
FM/TV (2 – 6 CH) VCO VOLTAGE CONFIRMATION
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
Confirmation
108 MHz
15.0
± 1.0 V
Confirmation
TV 2 ch
2.35
± 0.1 V
FM/TV (2 – 6 CH) TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
TV 2 ch
CT2
108 MHz
TV (7 – 13 CH)/WEATHER (1– 7 CH)
VCO VOLTAGE CONFIRMATION
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
Confirmation
TV 13 ch
10.0
± 1.0 V
Confirmation
WEATHER 2 ch
4.6
± 0.5 V
TV (7 – 13 CH)/WEATHER (1– 7 CH)
TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3
WEATHER 2 ch
CT3
TV 13 ch
Adjustment Location: MAIN board (See page 13)
FM STEREO ADJUSTMENT
Setting:
Function: RADIO
RADIO BAND button: FM
Function: RADIO
RADIO BAND button: FM
1. Connect the frequency counter to TP (FMST) and TP (RA-
DIO +B) as shown the figure below.
2. Tune the set to 87.5 MHz.
3. Adjust RV1 for 75.95 to 76.05 kHz reading on the frequency
3. Adjust RV1 for 75.95 to 76.05 kHz reading on the frequency
counter.
Adjustment Location: MAIN board (See page 13)
TUNER SECTION
0 dB=1
µ
V
[AM]
Setting:
Function : RADIO
RADIO BAND button : AM
Function : RADIO
RADIO BAND button : AM
[FM/TV/WEATHER]
Setting:
Function : RADIO
RADIO BAND button: FM or TV or WEATHER
Function : RADIO
RADIO BAND button: FM or TV or WEATHER
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer ca-
pacitors.
pacitors.
• Remove FM antenna in FM adjustment.
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
3.2
Ω
MAIN board
CN303 pin
CN303 pin
3
MAIN board
CN303 pin
CN303 pin
4
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level:
as low as possible
deviation by 400 Hz
signal
Output level:
as low as possible
+
–
–
level meter
MAIN board
CN303 pin
CN303 pin
3
MAIN board
CN303 pin
CN303 pin
4
set
3.2
Ω
0.01
µ
F
MAIN board
TP (GND)
TP (GND)
MAIN board
TP (ANT)
TP (ANT)
digital voltmeter
TP (VT)
TP (FM GND)
100 k
Ω
MAIN board
+
–
–
SECTION 4
ELECTRICAL ADJUSTMENTS
set
MAIN board
TP (ANT)
TP (ANT)
MAIN board
TP (GND)
TP (GND)
0.01
µ
F
Carrier frequency : 87.5 MHz
Modulation
Modulation
: no modulation
Output level
: 0.1 V (100 dB)
FM RF SSG
33 k
Ω
+
+
–
–
MAIN board
TP (FMST)
TP (RADIO +B)
TP (GND)
frequency counter
1
µ
F/50 V
digital voltmeter
TP (VT)
TP (AM GND)
100 k
Ω
MAIN board
+
–
–
13
ICF-CD863V
Adjustment Location:
AUTO BRIGHTNESS ADJUSTMENT
Connecting:
1. Set to power off state.
2. Connect a digital voltmeter to TP (DIMMER) and TP (GND)
2. Connect a digital voltmeter to TP (DIMMER) and TP (GND)
on the LCD board and confirm that the voltage is 0 V.
3. Turn on the power.
4. Connect the digital voltmeter to TP (DIMMER) and TP (GND)
4. Connect the digital voltmeter to TP (DIMMER) and TP (GND)
on the LCD board and adjust RV401 so that the voltage be-
comes 1.5
comes 1.5
± 0.05 V.
5. Turn off the power.
6. Applied sufficient light to IC403 (brightness sensor) on the
6. Applied sufficient light to IC403 (brightness sensor) on the
DIMMER board and confirm that the voltage is 3.3
± 0.3 V.
7. Short the BP404.
Adjustment Location:
digital voltmeter
TP (DIMMER)
TP (GND)
100 k
Ω
LCD board
+
–
– MAIN BOARD (Component Side) –
L1 AM VCO Voltage Adjustment
RV1 FM Stereo Adjustment
RV2 AM IF Adjustment
AM
Tracking
Adjustment
Tracking
Adjustment
CT1
L5
L5
}
FM/TV (2 – 6 ch)
Tracking Adjustment
Tracking Adjustment
L2
CT2
CT2
}
TV (7 – 13 ch)
WEATHER (1 – 7 ch)
Tracking Adjustment
WEATHER (1 – 7 ch)
Tracking Adjustment
CT3
L3
L3
}
– MAIN BOARD (Conductor Side) –
TP (ANT)
TP (FM GND)
TP (RADIO B+)
TP (VT)
TP (FM ST)
TP (AM GND)
– LCD BOARD (Component Side) –
RV401 Auto Brightness Adjustment
– LCD BOARD (Conductor Side) –
TP (GND)
TP (DIMMER)
– DIMMER BOARD (Conductor Side) –
IC403
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