Sony ICF-CD7000 Service Manual ▷ View online
ICF-CD7000
9
3-9. HOLDER (CD), RELAY BOARD
4
three screws
(B2.6)
(B2.6)
7
RELAY board
1
two screws
(B2.6)
(B2.6)
2
holder (CD)
3
OP flexible board
(CN501)
(CN501)
6
Remove the four solders.
5
– cabinet (upper) block bottom view –
3-10. CD MECHANISM DECK BLOCK (CDM-3525)
1
floating screw
2
spring (insulator)
4
insulator (spring)
1
floating screw
2
spring (insulator)
4
insulator (spring)
1
floating screw
2
spring (insulator)
4
insulator (spring)
5
CD mechanism deck block
(CDM-3525)
(CDM-3525)
3
– cabinet (upper) block bottom view –
ICF-CD7000
10
3-11. CONNECTION CORD (WITH PLUG) (BUILT-IN AUDIO CABLE) (J301)
4
Turn over the
cabinet (lower) block.
cabinet (lower) block.
3
retainer PWB
2
screw
6
screw (B2.6)
8
connection cord (with plug)
(built-in audio cable) (J301)
(built-in audio cable) (J301)
5
Pull out the connection cord
(with plug).
(with plug).
7
cover (cord)
1
connector (CN307)
– cabinet (lower) block bottom view –
– cabinet (lower) block front view –
11
ICF-CD7000
SECTION 4
TEST MODE
KEY AND DISPLAY CHECK MODE
Procedure:
1. Turn the main power on while pressing simultaneously three
keys of [OFF], [NAP] and [PRESET TUNING 1].
2. The microcomputer version will be displayed on the liquid
crystal display.
3. When the [SNOOZE] key is pressed once, each segment and
LEDs of LED indicator element light up all.
4. The electronic sound is output when the key is pressed except
[SNOOZE] key, and the segment and LED on the LED indicator
element corresponding to the key are turned off.
element corresponding to the key are turned off.
5. After all keys except [SNOOZE] key are pressed, Press the
[SNOOZE] key once.
6. The electronic sound is output.
7. Press the [SNOOZE] key once, release from test mode and set
7. Press the [SNOOZE] key once, release from test mode and set
is reset.
CD TEST MODE
Procedure:
1. Turn the power on.
2. Insert the CD to the set, and press the
2. Insert the CD to the set, and press the
u
key to the playback.
3. TP406 (TEST CD) on the KEY (R) board is momentarily
shorted when the CD playback.
4. When the CD test mode is activated, “82” is displayed.
5. Operate it referring to the figure below.
5. Operate it referring to the figure below.
82
STOP 2 MODE
PRESET
TUNING
5
key
TP406 (TESTCD)
on the KEY (R) board
is momentarily shorted
when the CD playback.
on the KEY (R) board
is momentarily shorted
when the CD playback.
F-
FOCUS 2 MODE
F-
FOCUS 1 MODE
NORMAL MODE
(CD PLAY)
(CD PLAY)
OFF key
OFF key
u
key
SLEEP key
Connecting Location:
– KEY (R) BOARD (Conductor Side) –
TP406
(TEST CD)
Fig. A.
Method of operating CD test mode
12
ICF-CD7000
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
450 kHz
( ): Italian, Russian models
AM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L4
530 kHz (531 kHz)
1.0
±
0.1 V
Confirmation
1,710 kHz (1,611 kHz)
5.3
±
0.4 V (4.9
±
0.4 V)
( ): Italian, Russian models
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3
620 kHz (621 kHz)
CT3
1,400 kHz (1,404 kHz)
FM IF ADJUSTMENT
Adjust for a minimum reading on level meter
T2
10.7 MHz
FM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L2
108 MHz
3.0
±
0.2 V
Confirmation
87.5 MHz
1.3
±
0.2 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
87.5 MHz
CT1
108 MHz
Adjustment and Connecting Location:
TU and AMP board (See page 13)
TU and AMP board (See page 13)
TUNER SECTION
0 dB=1
µ
V
[AM]
Setting:
Function: RADIO
Band: AM
Function: RADIO
Band: AM
[FM]
Setting:
Function: RADIO
BAND button: FM
Function: RADIO
BAND button: FM
• 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
8
Ω
AMP board
CN353 pin
CN353 pin
2
AMP board
CN353 pin
CN353 pin
1
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
AMP board
CN353 pin
CN353 pin
2
AMP board
CN353 pin
CN353 pin
1
set
8
Ω
0.01
µ
F
TU board
TP (GND)
TP (GND)
TU board
TP (ANT)
TP (ANT)
digital voltmeter
TP (VT)
TP (GND)
100 k
Ω
TU board
SECTION 5
ELECTRICAL ADJUSTMENTS
Ver. 1.2
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