Read Sony ICF-CD815 Service Manual online
SERVICE MANUAL
9-887-548-01
2007B05-1
© 2007.02
© 2007.02
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
Published by Sony Techno Create Corporation
FM/AM CD CLOCK RADIO
US Model
SPECIFICATIONS
Ver. 1.0 2007.02
ICF-CD815
Model Name Using Similar Mechanism
ICF-CD814
Optical Pick-up Block
KSM-213CDP
CD player section
System:
Compact disc digital audio system
Laser diode properties:
Emission duration: Continuous
Laser output: Less than 44.6
Laser output: Less than 44.6
µW
(This output is the value measured at a distance of about
200 mm from the objective lens surface on the optical pick-
up block with 7mm aperture.)
200 mm from the objective lens surface on the optical pick-
up block with 7mm aperture.)
Frequency response:
20 - 20 000 Hz
+1
– 2
– 2
dB
Wow and flutter:
Below measurable limit
Radio section
Frequency range:
FM: 87.5-108 MHz
AM: 530-1 710 kHz
AM: 530-1 710 kHz
General
Time display:
12-hour system
Speaker:
57 mm (2 /
4
inches) dia., 8
Ω
1
Input:
Audio In jack (stereo minijack): minimum input level 245 mV,
impedance 47 k
impedance 47 k
Ω
Power outputs:
0.7 W + 0.7 W (at 10% harmonic distortion)
Power requirements:
120 V AC, 60 Hz
Dimensions:
Approx. 190
× 93 × 222 mm (w/h/d) (Approx. 7 /
2
× 3 /
3
×
1
2
8 /
4
inches) incl. projecting parts and controls
3
Mass:
Approx. 1.5 kg (3 lb 5 oz)
Supplied accessories:
audio cable (1)
Design and specifications are subject to change without notice.
2
ICF-CD815
TABLE OF CONTENTS
1.
SERVICING NOTES
...............................................
3
2.
GENERAL
...................................................................
4
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
5
3-2.
Window ...........................................................................
6
3-3.
Cabinet (Upper) Block ....................................................
6
3-4.
TUNER Board .................................................................
7
3-5.
LED Indicator Element (LED801) ..................................
7
3-6.
ALARM (A) Board, ALARM (B) Board ........................
8
3-7.
Chassis Block ..................................................................
8
3-8.
MAIN Board Block .........................................................
9
3-9.
Optical Pick-up Block (KSM-213CDP) ..........................
9
3-10. TRANS Board ................................................................. 10
3-11. Speaker (5.7 cm) (SP101, SP201) ................................... 10
3-11. Speaker (5.7 cm) (SP101, SP201) ................................... 10
4.
TEST MODE
.............................................................. 11
5.
ELECTRICAL ADJUSTMENTS
......................... 13
6.
DIAGRAMS
6-1.
Printed Wiring Board – TUNER Section – ..................... 16
6-2.
Schematic Diagram – TUNER Section – ........................ 17
6-3.
Schematic Diagram – MAIN Section (1/2) – .................. 18
6-4.
Schematic Diagram – MAIN Section (2/2) – .................. 19
6-5.
Printed Wiring Boards – MAIN Section – ...................... 20
6-6.
Printed Wiring Boards
– MOTOR/KEY/TRANS Section – ................................ 21
– MOTOR/KEY/TRANS Section – ................................ 21
7.
EXPLODED VIEWS
7-1.
Overall Section ................................................................ 26
7-2.
Cabinet (Upper) Section .................................................. 27
7-3.
Cabinet (Lower) Section .................................................. 28
7-4.
Chassis Section ................................................................ 29
8.
ELECTRICAL PARTS LIST
................................ 30
Notes on chip component replacement
•
Never reuse a disconnected chip component.
•
Notice that the minus side of a tantalum capacitor may be
damaged by heat.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
other than those specified herein may result in hazardous radiation
exposure.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE
WITH MARK
0
ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
3
ICF-CD815
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
Never look into the laser diode emission from right above when
checking it for adjustment. It is feared that you will lose your sight.
checking it for adjustment. It is feared that you will lose your sight.
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350
°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
also be added to ordinary solder.
CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
Chuck Plate Jig.
• Code number of Chuck Plate Jig: X-4918-255-1
4
ICF-CD815
SECTION 2
GENERAL
This section is extracted from
instruction manual.
instruction manual.
Z
TIME S
ET
RADIO O
N
TRACK
SLEEP
CLOCK S
ET
CD
OFF
ALARM RESET
SNOOZE/SLEEP OFF
VOLUME
BAND
TUNING
kHz
AM
FM
AM
MHz
FM
BRIGHTNESS
H
L
M
TRACK
ALARM A
ALARM B
AUDIO IN
PM
A
B
AUDIO IN
OFF
CD
RADIO
BUZZER
AUDIO
IN
IN
AC power cord
(The AC power
cord functions as
an FM antenna.)
(The AC power
cord functions as
an FM antenna.)
CD
u
has a tactile dot.
There is a tactile dot beside volume to
show the direction to turn up the volume.
show the direction to turn up the volume.
ALARM MODE
selector
selector
ALARM A
ALARM B
AUDIO IN indicator
Setting the clock
1
Plug in the unit.
The display will flash “12:00”.
2
Press CLOCK SET for a few seconds.
The hour will start to flash in the display.
3
Press TIME SET + or – until the correct hour
appears in the display.
appears in the display.
4
Press CLOCK SET once.
5
Repeat steps 3 and 4 to set the minute.
After setting the minute, press
CLOCK
SET
to start the
counting of the seconds.
• To set the current time rapidly, hold down
TIME
SET +
or
–
.
• During PM hours, the indicator lights up.
• In step 5, when you press
• In step 5, when you press
CLOCK SET
after the minute
setting to activate the clock, the seconds start counting from
zero.
zero.