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TV/WEATHER/FM/AM CD CLOCK RADIO. SERVICE MANUAL VERSION 1.0 2004.02
PART#(9-877-625-01)
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ICF-CD843V
SERVICE MANUAL
Ver 1.0 2004.02
US Model
Model Name Using Similar Mechanism Optical Pick-up Block Name Optical Pick-up Name
ICF-CD853V KSM-213RDP KSS-213R
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION With 4-ohm loads, both channels driven from 100 - 10 000 Hz; rated 1.0 W per channel-minimum RMS power, with no more than 10% total harmonic distortion in AC operation.
General
Time display: 12-hour system Speaker: 66 mm (2 5/8 inches) dia., 4 Power outputs: 1.2 W + 1.2 W (at 10% harmonic distortion) Power requirements: 120 V AC, 60 Hz Dimensions: Approx. 185.5 × 176 × 210.5 mm (w/h/d) (Approx. 7 3/8 × 7 × 8 3/8 inches) incl. projecting parts and controls Mass: Approx. 1 780 g (3 lb 15 oz) Design and specifications are subject to change without notice.
CD player section
System: Compact disc digital audio system Laser diode properties: Material: GaAlAs Wavelength: 780 nm Emission duration: Continuous 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 7 mm aperture.) +1 Frequency response: 20-20 000 Hz -1.5 dB Wow and flutter: Below measurable limit
Radio section
Frequency range: TV: 2 - 13 ch WEATHER: 1 - 7 ch FM: 87.5 - 108 MHz AM: 530 - 1 710 kHz
TV/WEATHER/FM/AM CD CLOCK RADIO
9-877-625-01
2004B05-1 C 2004.02
Sony Corporation
Personal Audio Company Published by Sony Engineering Corporation
ICF-CD843V
TABLE OF CONTENTS 1. 2. 3.
3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7.
SERVICING NOTES .............................................. GENERAL .................................................................. DISASSEMBLY
Disassembly Flow ........................................................... Rear Cabinet Assy ........................................................... CD Lid ............................................................................. Upper Cabinet Assy ........................................................ MAIN Board ................................................................... CD Block ......................................................................... Optical Pick-up (KSS-213R) ..........................................
3 4
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. 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. 1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers' instructions to use these 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 lowvoltage 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)
To Exposed Metal Parts on Set
5 6 6 7 7 8 8
4.
ELECTRICAL ADJUSTMENTS
Tuner Section ................................................................. 9 CD Section ..................................................................... 11
5.
DIAGRAMS
12 13 14 16 17 18 19 20 21 22 23
5-1. Block Diagram CD Section .................................... 5-2. Block Diagram MAIN Section ............................... 5-3. Note for Printed Wiring Board and Schematic Diagrams ....................................................... 5-4. Printed Wiring Board CD Section .......................... 5-5. Schematic Diagram CD Section ............................. 5-6. Printed Wiring Board MAIN Section ..................... 5-7. Printed Wiring Boards POWER Section ................ 5-8. Schematic Diagram MAIN section (1/2) ............... 5-9. Schematic Diagram MAIN section (2/2) ............... 5-10. Printed Wiring Boards PANEL Section ................. 5-11. Schematic Diagram PANEL Section ......................
6.
6-1. 6-2. 6-3. 6-4. 6-5.
EXPLODED VIEWS
Cabinet Section ............................................................... Upper Cabinet Section .................................................... Front Cabinet Section ..................................................... Rear Cabinet Section ...................................................... Optical Pick-up Section (KSM-213RDP) ...................... 27 28 29 30 31
0.15 µF
1.5 k
AC voltmeter (0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
7.
ELECTRICAL PARTS LIST .............................. 32
CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
About CD-Rs/CD-RWs This unit is compatible with CD-Rs/CD-RWs but playback capability may vary depending on the quality of the disc, the recording device and application software.
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. Flexible Circuit Board Repairing · Keep the temperature of the soldering iron around 270 °C during repairing. · Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). · Be careful not to apply force on the conductor when soldering or unsoldering.
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.
2
ICF-CD843V SECTION 1 SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT 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. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens. LASER DIODE AND FOCUS SEARCH OPERATION CHECK During normal operation of the equipment, emission of the laser diode is prohibited unless the upper lid is closed while turning ON the S302. (push switch type) The following checking method for the laser diode is operable. · Method Emission of the laser diode is visually checked. 1. Open the upper lid. 2. Push the S302 as shown in Fig.1.
Note: Do not push the detection lever strongly, or it may be bent or damaged. 3. Press the CD u button.
CHUCK PLATE JIG ON REPAIRING On repairing CD section, playing a disc without the CD lid, use Chuck Plate Jig. · Code number of Chuck Plate Jig: X-4918-255-1
4. Check the object lens for confirming normal emission of the laser diode. If not emitting, there is a trouble in the automatic power control circuit or the optical pick-up. In this operation, the object lens will move up and down 2 times along with inward motion for the focus search.
S302
Fig.1 Method to push the S302
3
ICF-CD843V SECTION 2 GENERAL
2
Press ALARM SET RADIO for a few seconds.
ALARM and RADIO appear on the display. After one beep, ALARM and the hour will start to flash on the display.
This section is extracted from instruction manual.
The display shows the snooze time for a few seconds and returns to show the current time. When you press SNOOZE·DATE/SLEEP OFF after the current time appears, the snooze time starts from 10 minutes again. The maximum length of the snooze time is 60 minutes.
3
Press TUNE/TIME SET + or desired hour appears.
until the
To set the hour rapidly, hold down TUNE/TIME SET + or
ALARM OFF--
The CD, radio, or buzzer alarm is turned off automatically after 60 minutes.
4 5
The PRESET TUNING 3 button has a tactile dot. FM wire antenna There is a tactile dot beside volume to show the direction to turn up the volume.
Press ALARM SET RADIO.
The minute will flash.
To Stop the Alarm
Press OFF x·ALARM RESET to turn off the alarm. The alarm will come on again at the same time the next day.
Repeat step 3 to set the minute and press ALARM SET RADIO.
WAKE UP STA appears and the preset number flashes on the display.
To Deactive the Alarm
Press ALARM MODE repeatedly until CD/RADIO/ BUZZER indicator go off.
6
Press TUNE/TIME SET + or the wake-up station.
P AM P1 to 5 TV P1 to 5
to select
Preset number changes in the order as follows:
FM1 P1 to 5 FM2 P1 to 5
AC power cord
WEATHER P1 to 5
Setting the Sleep Timer
You can fall asleep to the CD or the radio using the automatically after a preset duration. Press SLEEP during CD or radio play. You can set the sleep timer to durations of 90, 60, 30, or 15 minutes. Every push changes the display as follows:
off (current time) 15 90 30 60
P- is the last received station. You can directly select the desired wake-up station by pressing RADIO·BAND or the PRESET TUNING button while the indication P- is not displayed.
7
Press ALARM SET RADIO.
Two short beeps will confirm the setting.
To Set the Buzzer Alarm: 1 Press ALARM SET BUZZER for a few
seconds.
ALARM and BUZZER appear on the display. After one beep, ALARM and the hour will start to flash on the display.
SLEEP will appear in the display when the duration time is set. The CD or the radio will play for the time you set, then shut off. To turn off the CD or the radio before the preset time, press SNOOZE·DATE/SLEEP OFF.
2
Press TUNE/TIME SET + or desired hour appears.
until the
To set the hour rapidly, hold down TUNE/TIME SET + or
3 4
Press ALARM SET BUZZER.
The minute will flash.
Repeat step 2 to set the minute and press ALARM SET BUZZER.
Two short beeps will confirm the setting.
To Set the Alarm Mode
The CD u button has a tactile dot.
To change the display to the daylight saving time (summer time) indication Press D.S.T./SUMMER T. is displayed and the time indication changes to summer time. To deactivate the summer time function, press D.S.T./SUMMER T. again. Before setting the alarm mode, be sure to set the alarm time. (See To Set the Alarm Time .) Repeat the pressing of ALARM MODE to select the alarm mode you want. Every time you press ALARM MODE, CD/RADIO/BUZZER indicator changes in the order as follows:
Features
· TV/WEATHER/FM/AM 4 band PLL (phase locked loop) synthesized clock radio · Easy preset digital tuning with 25 memory presets · Built-in CD player with CD-R/RW playback function · Easy to see large Display with small footprint. · Triple Alarm (Radio, buzzer or CD) with the extendable snooze function. · Easy nap timer --one push operation. · LCD with backlight which has a brightness control switch. · D .S.T. (Daylight Saving Time) -Summer time calculation.
CD RADIO BUZZER OFF CD+RADIO CD+BUZZER RADIO+BUZZER CD+RADIO+BUZZER
The alarm time which plays or sounds next is displayed.
Setting the Alarm
This clock radio is equipped with 3 alarm modes- CD, radio and buzzer. Before setting the alarm, make sure to set the clock (see Setting the Clock and Date ).
To Set the Alarm Time To Set the CD Alarm:
For the CD alarm, the track you specified as the Wake-up track is played first. (If the CD play mode is set to SHUFFLE or SHUFFLE REP , however, all the tracks are played in random order.)
Setting the Brightness of the Backlight
Press BRIGHTNESS to select high, middle or low for the display according to your preference.
To Check the Alarm Setting
For ALARM SET CD, pressing once displays the alarm time, pressing twice displays the wake-up track number. For ALARM SET RADIO, pressing once displays the alarm time, pressing twice displays the wake-up station. For ALARM SET BUZZER, pressing once displays the alarm time. The display shows the alarm setting for a few seconds and then returns to the previous display. Alarm time in CD alarm, radio alarm and buzzer alarm is set at AM 12:00 when you purchased the unit.
1
Setting the Clock and Date
1 2 3 4 5
Plug in the clock radio.
The display will flash AM 12:00 .
With the alarm turned on, adjust the volume to the level you require. Press ALARM SET CD for a few seconds.
ALARM , CD appear on the display. After one beep, ALARM and the hour will start to flash in the display.
2
Press CLOCK for a few seconds.
You will hear a beep and the year will start to flash in the display.
3
Press TUNE/TIME SET + or desired hour appears.
until the
To set the hour rapidly, hold down TUNE/TIME SET + or
ALARM ON--
If you set the CD alarm and there is no disc in the CD player, the buzzer alarm will sound in its place at the time set. For the buzzer alarm, the beeping of the alarm becomes more rapid after every few seconds in three progressive stages. Note When CD, radio and buzzer alarms are set for the same time, the CD alarm takes precedence. If the CD alarm is not set, the radio alarm takes precedence.
Press TUNE/TIME SET + or until the correct year appears in the display. Press CLOCK once. Repeat steps 3 and 4 to set the month, day, hour, and minute.
After setting the minutes, press CLOCK to start the clock, and you will hear two short beeps.
4 5 6 7
Press ALARM SET CD.
The minute will flash.
Repeat step 3 to set the minute and press ALARM SET CD.
The wake-up track number flashes on the display.
Press TUNE/TIME SET + or to select the desired wake-up track number.
The wake-up track number can be set up to 99.
To display the year and date, press SNOOZE·DATE/SLEEP OFF once for the date, and within 4 seconds press it again for the year. The display shows the date or year for a few seconds and then changes back to the current time. To set the current time rapidly, hold down TUNE/TIME SET + or . In step 5, when you press CLOCK after the minute setting to activate the clock, the seconds start counting from zero.
Press ALARM SET CD.
Two short beeps will confirm the setting.
To Doze for a Few More Minutes
Press SNOOZE·DATE/SLEEP OFF. The CD, radio or buzzer alarm turns off but will be automatically activated again after about 10 minutes. Every time you press SNOOZE·DATE/SLEEP OFF, the snooze time changes as follows:
To Set the Radio Alarm:
For the radio alarm, the station you specified as the Wake-up station is played.
1
Tune into a station and adjust the volume.
10
20 40
30 50 60
4
ICF-CD843V SECTION 3 DISASSEMBLY
· This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY FLOW
SET
3-2. Rear Cabinet Assy (Page 6)
3-4. Upper Cabinet Assy (Page 7)
3-3. CD Lid (Page 6)
3-5. MAIN Board (Page 7)
3-6. CD Block (Page 8)
3-7. Optical Pick-up (KSS-213R) (Page 8)
5
ICF-CD843V
Note: Follow the disassembly procedure in the numerical order given.
3 two screws (B3)
3-2.
REAR CABINET ASSY
5 connector (CN901)
3 two screws (B3)
2 two screws (B2.6) 4 6 rear cabinet assy
1 two screws (B2.6)
3-3.
CD LID
3 boss 4 CD lid 3 boss
2 damper
6
1 screw (B3)
ICF-CD843V
3-4.
UPPER CABINET ASSY
2 two screws (B3) 1 screw (B2.6)
4 flexible flat cable (20core) (CN301)
5 upper cabinet assy
3 1 screw (B2.6)
3-5.
MAIN BOARD
3 MAIN board 1 flexible flat cable (14core) (CN302)
2 screw (B3)
2 four screws (B3)
7
ICF-CD843V
3-6.
CD BLOCK
3 vibration proof (green)
1 screw (B2.6) 2 4 CD block 3 vibration proof (green)
3 vibration proof (red)
1 three screws (B2.6)
3 vibration proof (red)
3-7.
OPTICAL PICK-UP (KSS-213R)
1 two claws 2 CD cover
3 gear (B) 8 optical pick-up (KSS-213R)
1 two claws
5 6 sled shaft 4 two screws (M2)
7 flexible flat cable (16core) (CNP701)
8
ICF-CD843V SECTION 4 ELECTRICAL ADJUSTMENTS
TUNER SECTION
[AM] Setting: Function : RADIO RADIO BAND button : AM
Put the lead-wire antenna close to the set. MAIN board CN303 pin 4 level meter 4.0 set 30% amplitude modulation by 400 Hz signal Output level: as low as possible + MAIN board CN303 pin 3
L2 CT2 FM/TV (2 6 CH) TRACKING ADJUSTMENT Adjust for a maximum reading on level meter TV 2 ch 108 MHz TV (7 13 CH), WEATHER (1 7 CH) VCO VOLTAGE CONFIRMATION
0 dB=1 µV
L5 CT1
AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter 580 kHz 1,490 kHz
FM/TV (2 6 CH) VCO VOLTAGE CONFIRMATION Adjustment Part Frequency Display Reading on Digital Voltmeter Confirmation Confirmation 108 MHz TV 2 ch 15.0 ± 1.0 V 2.35 ± 0.1 V
AM RF signal generator
digital voltmeter MAIN board TP (VT) TP (FM GND) 100 k
Adjustment Part Frequency Display Reading on Digital Voltmeter Confirmation Confirmation TV 13 ch WEATHER 2 ch 10.0 ± 1.0 V 4.6 ± 0.5 V
[FM/TV] Setting: Function : RADIO RADIO BAND button: FM or TV or WEATHER
MAIN board CN303 pin 4 MAIN board FM RF signal TP (ANT) generator 0.01 µF set 22.5 kHz frequency deviation by 400 Hz signal Output level: as low as possible MAIN board TP (FM GND) level meter 4.0 + MAIN board CN303 pin 3
TV (7 13 CH), WEATHER (1 7 CH) TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L3 CT3 WEATHER 2 ch TV 13 ch
Adjustment Location: MAIN board (See page 10) FM STEREO ADJUSTMENT Setting: Function: RADIO RADIO BAND button: FM
FM RF SSG 0.01 µF MAIN board TP (ANT) set
digital voltmeter MAIN board TP (VT) TP (AM GND) 100 k
Carrier frequency : 87.5 MHz Modulation : no modulation Output level : 0.1 V (100 dB)
MAIN board TP (FM GND)
· Repeat the procedures in each adjustment several times, and the tracking adjustments should be finally done by the trimmer capacitors. · Remove FM antenna in FM adjustment.
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 Confirmation 530 kHz 1,710 kHz 2.3 ± 0.05 V 8.7 ± 1.0 V
1. Connect the frequency counter to TP (FMST) and TP (RADIO +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 counter.
frequency counter
MAIN board
TP (FMST) TP (RADIO +B) TP (FM GND)
1 µF/50 V 33 k
+ +
Adjustment Location: MAIN board (See page 10)
9
ICF-CD843V
Adjustment Location: MAIN BOARD (Component Side)
L5 AM Tracking Adjustment CT1
}
L1 AM VCO Voltage Adjustment RV1 FM Stereo Adjustment L3 TV (7 13 ch)/Weather (1 7 ch) CT3 Tracking Adjustment
}
RV2 AM IF Adjustment CT2 FM/TV (2 6 ch) Tracking Adjustment L2
}
MAIN BOARD (Conductor Side)
TP (FM GND) TP (ANT)
TP (AM GND)
TP (RADIO +B)
TP (VT)
10
ICF-CD843V
CD SECTION
CD section adjustments are done automatically in this set. In case of operation check, confirm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope to TP (RF) and TP (GND) on the CD board. 2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01) 3. Press the u (CD) button. 4. Confirm that the oscilloscope waveform is as shown in the figure below. (eye pattern) A good eye pattern means that the diamond shape () in the center of the waveform can be clearly distinguished. · RF signal reference waveform (eye pattern)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.) TIME/DIV: 500 ns
0.8 ± 0.2 Vp-p
When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity.
Adjustment Location: CD BOARD (Conductor Side)
IC701
TP (GND) TP (RF)
11
11
ICF-CD843V SECTION 5 DIAGRAMS
5-1. BLOCK DIAGRAM CD Section
RF AMP, FOCUS/TRACKING SERVO, DIGITAL SIGNAL PROCESSOR, CLV SERVO, D/A CONVERTER IC701 LPF EFM IN ERROR CORRECTION AUDIO CD C1 2, C2 2 INTERPOLATION MUTE ATTENUATION DEEMPHASIS LCHO 42 RCHO 45 CD-L R-CH
RAM
A DETECTOR A D D
FIN2 8
· R-ch is omitted due to same as L-ch. · SIGNAL PATH : CD PLAY
+
FIN1 7
MIX
EQ
AGC
RF
4
3
SLISE LEVEL CONTROL
8FS DIGITAL FILTER
1 BIT DAC
LPF
A
(Page 13)
I-V AMP
C B PH A/D
B
C
AUDIO OUT
DOUT
39
BH F F TIN2 10 TIN1 9 TBAL LPF TRACK JUMP SW
CLV, CAV CONTROL RUPTURE DETECT
PLL VCEC
FRAME SYNC DETECT, PROTECT INSERT, EFM DECODE
FSEQ
31
41 FSEQ
E
E
SERVO PROCESSOR OPTICAL PICK-UP (KSS-213R) LASER DIODE AUTOMATIC POWER CONTROL Q701 AUDIO ADJUST S/H APC D/A GENERAL-PURPOSE PORTS SW
RAM
DRF
DRF
67
57 DRF
LD
LDD 80
COMMAND INTERFACE
CONT4
TDO FDO SLDO SPDO
XOUT
LDS
RES
XIN
FE TE
79 PD
13 15
20 21 23 22
25
72
49
48
66
61 62 63
S701 (LIMIT) FOCUS/TRACKING COIL DRIVE, SPINDLE/SLED MOTOR DRIVE IC702 2-AXIS DEVICE T+ T TRACKING COIL DRIVE TIN 9
X701 33.8688MHz
DO WRQ
PD
LD
CONT1
SYSTEM CONTROLLER IC401 (1/2)
CE CL DI
64 65
50 WRQ 56 DATA-IN CD D306 D307 54 DATA CD/RADIO 55 CLK CD/RADIO 53 LAT CD/RADIO 58 XRST
T+
(TRACKING)
12 11
D308
(FOCUS)
T
D52
D53
F 1
18
F
19
CLK
39
CE
DI
S302 CD LID OPEN/CLOSE DETECT M702 (SLED)
M
26 27
SL+ SL SLED MOTOR DRIVE
SLIN
25
M701 (SPINDLE)
M
2 1
SP+ SP SPINDLE MOTOR DRIVE
OPEN
DI, CLK, CE
17
FOCUS COIL DRIVE
FIN
D54
F+
F+
SPIN
3
B
(Page 13)
MUTE
7
12
12
ICF-CD843V
5-2.
BLOCK DIAGRAM MAIN Section
VT CT3, L3
TV(7 13ch) WEATHER(1 7ch) TRACKING ANT1 (FM/TV)
20 L3 TV RF CT3 D4 24
TVRO
TV/FM/AM RF AMP, MIX, OSC, DET, MPX IC1
CD-L
A
(Page 12)
TVIN
TV RF AMP 150kHz FM RF AMP
AMP Q101 DETO LOUT R-CH AMP Q102 BUFFER Q108
RV301 VOLUME
POWER AMP IC302 11 L IN 10 NF L MUTING Q106 R-CH 12 R IN 13 NF R L OUT 5 SP101 (L-CH) SP201 (R-CH)
BPF BPF1 CT2, L2 FM/TV(2-6ch) TRACKING L2 FM RF CT2 D3
25 22
FMIN FMRO
+
+
PSN
FM/TV LPF 45kHz
FM LMT
FM DET
35
36
MPXI
MPX DECODER
3
AM/FM: 1/2 TV: 1/8
AM BPF
AGC AMP
R OUT 3
VCO
BASS BOOST SWITCH Q103 R-CH
D303 R-CH
STANDBY 8
L5 AM FERRITE-ROD ANTENNA
26 CT1 D2 (1/2)
ARFI
AM RF AMP AM OSC AMLO TV/FM OSC FTLO REGULATOR BAND REGV IFCT VCO
S301 MEGA BASS ON OFF 3.3V
Q301
STANDBY SWITCH Q302, 303
CT1, L5 AM TRACKING D5
16
18
19
29
12
1
D2 (2/2) L1 AM OSC AM VCO VOLTAGE OSC BUFFER Q2
RV2 AM IF
RV1 FM STEREO 61 A MUT
MUTING Q405
51 BUZZERMUTE
52 BUZZER
60 POWER ON +3.9V REGULATOR Q955 +3.9V REGULATOR Q953 +6V REGULATOR Q952 MOTOR 6V B+ SWITCH Q305 B+ SWITCH Q1 +3.3V REGULATOR Q951 RECT D907 910 RECT D905, 906 RECT D901 903 VT 3.3V
BAND SELECT Q51
FM/AM PLL IC51 LOW-PASS FILTER Q52, 53 15 PD
11 AMIN
12 FMIN
5 BO1
6 BO2
PHASE DETECTOR CHARGE PUMP PSN 19 XIN X51 75kHz 20 XOUT 12BITS PROGRAMMABLE DIVIDER SWALLOW COUNTER 1/16, 1/17, 4BITS SYSTEM CONTROLLER IC401 (2/2) RESET 76 RESET SIGNAL GENERATOR IC402
LED 3.9V D402
3.9V
(Page 12)
B
DI, CLK, CE
DI CLK CE
DI 2 CLK 3 CE 1
CCB I/F
DATA SHIFT REGISTER LATCH CD ON 48
CD 3.3V
TU 3.3V RADIO ON 59 BACK LIGHT0
· R-ch is omitted due to same as L-ch. · SIGNAL PATH : CD PLAY : FM : TV : AM
BACK LIGHT1
CD LED RADIO LED BUZZER LED
X1
X2
74
75
70
71
SEG0 SEG27 10 37
COM0 COM3 69
KEY0 KEY3 43 46
AC IN 49
78 80
T901 POWER TRANSFORMER (AC IN)
XT1
XT2
67
68
X402 4.19MHz
X401 32.768kHz LIQUID CRYSTAL DISPLAY LCD401 S601 621 D601 603 Q401, Q402 D604 609 (LCD BACK LIGHT) Q403, Q404 Q401 404 LED DRIVE
LED 3.9V
13
13
ICF-CD843V
5-3.
NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. f · : internal component. · 5 : fusible resistor. · C : panel designation. Note: The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. A : B+ Line. B : B Line. H : adjustment for repair. Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. · Circled numbers refer to waveforms. · Signal path. F : FM f : AM J : CD · · · ·
· Circuit Boards Location
Note on Printed Wiring Boards: · X : parts extracted from the component side. · Y : parts extracted from the conductor side. · W : indicates side identified with part number. f : internal component. · · : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Pattern face side: (Conductor Side) Parts face side: (Component Side)
Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.
CD board PRESET board
LCD board
MAIN board
LED board
ALARM board
VOLUME board
TRANSFORMER board
14
14
ICF-CD843V
· Waveforms CD Board
1 IC701 4 (RF) (CD PLAY mode)
MAIN Board
qa IC51 w; (XOUT) (RADIO ON mode)
LCD Board
wa IC401 u; (TX1)
0.85 ± 0.2 Vp-p
1.4 Vp-p
7.5 Vp-p
13.3 µs
30.4 µs
2 IC701 qd (FE) (CD PLAY mode)
ws IC401 uf (X1) (CD PLAY mode)
Approx. 90 mVp-p
2.6 Vp-p
239 ns
3 IC701 qg (TE) (CD PLAY mode)
Approx. 60 mVp-p
4 IC701 rk (XOUT)
2.9 Vp-p
29.5 ns
15
15
ICF-CD843V
5-4.
· Semiconductor Location
Ref. No. IC701 IC702 Q701 Location C-4 H-3 F-5
R715 R714 JW701 JW702 C727
PRINTED WIRING BOARD CD Section
· See page 14 for Circuit Boards Location.
1 A
2
3 CD BOARD
4
5
6
7
8
C735
B
C754 JW730 JC704
JW703 C711 C716 C709 R723
JW705
FB701
IC701
C755
L706
C717 X701
JW707
C722 R716 R718
JW706
C
C708 C720 C721 C742
C732
C707
JW727
R717
JW729
D
A
MAIN BOARD CN302
CNP702
R719 C725 C724
C745 R722 C746 C744 C703 JW726 R708 R731 C747 JW724 R726 C730 R729 R730 C731
TP (GND)
C734 C736
JW709
C739 C738 R701 R706
(Page 18)
C743
R720 R721
TP (RF)
R704 C705
JW708
R703 R705
C723 JW728 C726 R724
R702 R709
E
JW725
R711 C704
R710 JW710 JW711 C706
R727
JW723
R725 C729 C728
R728 JW712
JW713 C702 C701 R707 R712 C751 JW714
C750
F
R743
M
M702 (SLED)
C733
Q701 JW722 C740
CNP701
G
JW720 JW719 R744
JW716 C741 JW718 JW721 S701 (LIMIT) M701 (SPINDLE)
JW715
OPTICAL PICK-UP BLOCK (KSS-213R)
M
H
R741
IC702
JW717
JC701
13
JC702
1-680-943-
(13)
16
16
ICF-CD843V
5-5. SCHEMATIC DIAGRAM CD Section · See page 15 for Waveforms. · See page 24 for IC Block Diagrams.
SW C729 1 R724 47k C747 100 10V
S701 (LIMIT)
GND
C730 0.1
C744 0.1 R728 10k
C728 0.047 R725 680 C746 100 10V
R731 2.2k
22p
22p
22p
0.01
22p
C720
C721
C722
C723
C724
1000p
1000p C726
C725
C727
680
1000p
R730 1k
R729 220
R726
R727 2.2k
A5
A2
A8
A4
A3
C745 0.1
A7
A6
CNP702 14P P-GND CD MOTOR 6.0V
A1 A2 C702 47 10V A3 C731 0.047 C704 22p R711 330 C705 4700p TP (RF) A4 A5 A6
R723 R722 R719 R720
100 FSEQ 100 DRF 100 DO 100 R717 R716 R718 R721 1k CL 1k CE 1k DI 1k RES CD R-OUT WRQ
R707 10
PCKIST
VVDD
PDO2
PDO1
VVSS
VDD5
FR
*WRQ
*RES
DO
DI
LDD
CONT1
CONT2
LDS
CONT3
Q701 KTN2907AS-RTK AUTOMATIC CNP701 16P VREF VCC E D A B C F GND LD VR PD F+ T+ T- F- C1 C2 C3 R712 100 C732 100 10V R701 R702 R703 R704 R705 R706 47k 15k 15k POWER CONTROL C701 1000p
R709 22k
R710 4.7k
R708 10k SLCO SLCIST EFMIN RF RFVDD
VSS
DRF
CL
CE
A7 A8 DATA A9
C703 0.1
(R-CH) (L-CH)
DATACK A10 LRSY ASDFIN ASDACK ASLRCK 16MOUT EFLG C2F RF AMP,FOCUS/TRACKING SERVO, DIGITAL SIGNAL PROCESSOR, XVSS FSX/16MIN XIN XOUT XVDD RVDD RCHO RVSS LVSS LCHO C716 0.01 R715 150 A10 R714 150 C711 0.01 FB701 A9 C717 0.01 JC704 220 X701 33.8688MHz C755 0.01 C754 0.01 L706
(Page 20)
CD L-OUT D-GND CD VDD 3.3V
TP (GND)
RFVSS FIN1 FIN2
15k TIN1 15k TIN2 47k (VC) VREF C734 C706 1 50V (FE) FE TEC (TE) TE C739 0.1 C707 1 C736 4700p JC703 0 RFMON JITTC ADAVDD C4 C733 100 10V C750 100 10V B1 TX C708 TY TDO 100p ADAVSS 4700p REFI
CLV SERVO,D/A CONVERTER IC701 LC78645NE-U
C738 0.1
SBCK/CONT6
(3.3V)VSS
SBCK/FG
GPDAC
CONT4
CONT5
DEFECT
MONI1
MONI3
MONI4
MONI5
MINI2
C751 0.1
LVDD
SPDO
DOUT
SLDO
FSEQ
C743 0.1
TEST
V/*P
VDD
FDO
C742 0.1
SPY
FY
SLY
C735 1000 6.3V C709 0.1
FX
SPX B3
B2
B4
SLX
B5
B4
A1
B2
C4 FIN
GND
SL-
SL+
VCC
VCC
(SLIN)
VREF
SLIN
(FIN)
C1 F+ F-
NC JC701 0 GND
FOCUS/TRACKING COIL DRIVE, SPINDLE/SLED
(TIN)
IC702 BA5826FP-E2
SL+ M702 (SLED)
0
SL-
JC702
R743 6.8k
SP+ M701 (SPINDLE) SP-
R744 100k
R741 6.8k
C3
B3
B5
B1
C2
OPOUT
REG-B
MUTE
REGO
MOTOR DRIVE
SPIN
GND
SP+
RST
SP-
TIN
T+
T-
OPIN
C741 0.1
C740 470 10V
17
17
· Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : CD STOP [ ] : CD PLAY
The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.
ICF-CD843V
5-6.
· Semiconductor Location
Ref. No. D2 D3 D4 D5 D52 D53 D54 D301 D303 D304 D305 D306 D307 D308 D951 D952 D953 D954 IC1 IC51 IC302 Q1 Q2 Q51 Q52 Q53 Q101 Q102 Q103 Q106 Q107 Q201 Q202 Q203 Q206 Q207 Q301 Q302 Q303 Q304 Q305 Q951 Q952 Q953 Q955 Location I-10 F-9 G-9 G-8 J-7 J-7 J-8 I-3 A-5 F-2 I-3 I-6 J-6 K-5 B-7 B-8 B-9 D-10 G-7 I-7 B-5 H-6 G-8 I-8 H-7 H-7 H-3 H-3 B-5 A-5 E-3 G-3 G-3 C-6 A-6 E-4 G-5 E-6 E-5 E-6 I-3 A-8 A-9 C-9 C-10
PRINTED WIRING BOARD MAIN Section
· See page 14 for Circuit Boards Location.
1
2
3
4
MAIN BOARD
A
5
Q106
BCE K C117
6
Q206
BCE
7
8
9
10
11
12
A
R128
D303
C122 K C222
R228 R953 R951 R956
R120
+
+
C217
R129
C313 1
R331
R220
C123
Q951
R958
Q952
15 R954
B
C224 C124
IC302
JW309 C310 C115
R229 C223 JW308
R955
C957
R966
D951
JW310
D952
C953
D953
C965
C961
1
R960
+
+
+
C966
+
R127
C314
Q103 R138
ECB C121
C221
+
+
C954 C955
C958 C959
C962
+
C312
R238
C116
+ 4
KH951
R961 R962
E
TRANSFORMER BOARD CN901
R124
R125
R126
+
R313
+
C128
C951
R227
R312
R323
C309
+
+
EC B
JW307
JW306
C
R231 R131
C225 C125 C226 C126
R225
C215
C228 R226
+
C216 C952
+ +
C956 C960
Q953
R224
(Page 19)
C
JW305
JW316
JW315
JW314
JW313
JW312
JW311
JW304
JW303
Q203
R222
C963
R964
C964
+
+
C970
Q955
E
R311
R239
C308
R122
C129
C229
JW301
C967
D
JW358 JW357
JW339 JW340
R139
JW302 JW334 C968
+
D954
A
K
C969
B R965
ANT1 (TV/FM)
CN303 SP201 (R-CH) 1
JW360
Q303 Q302
BCE BCE RV2 (AM IF)
E
JW321
SP101 (L-CH)
C38
BPF1 3 1 TP (ANT)
R132 R232
4
JC6
JW342
C69
JW337
C13
R315
C41
C47
+
+
C36
+
C14 C10 C12 C11
R6
C316
C37
C8
CT2 C25
R309
+
F
+
JW381 JW361 C307 R308 C17
+
R12 C7 JW323 L2 FM/TV RF
+
R8
R7 C15 40 C1 1 21
D3
JW317
L3 TV RF
JW355
C5
R209
R303
R304
JW362
C328
+
JW343
+
R2 R1 10 11
JC5
C205
Q201 Q202
+
C101
C201
C29
R3
R5
C2
C46
C102 JW344 C202 TP (AM GND) TP (RADIO+B) C62
C28
R207
R210
R214
C206
C207
JW356
L7
C32
G
JW372 JW371
C302
Q301
BCE
L4
+
BCE
BCE
C43
D4
JW318 C77 JW319 R9
R19
JW363
C301
R110
R107
R114
C107
C106
1
R16
C30
+
JW364 JW365
C44
JW333
A L8 R4
K
JW345
BCE
R109
Q2
TP (VT)
R18
C33
+ C3
D5
R15
A
K
20
C27
RV1 (FM STEREO)
C16
IC1
C6
A
31
30
K
R13
CT3
R201
R211
L52
R66
R101
R63
R206
R113
R106
R213
JW338
R58
C57
H
R65
R64
C22
R20
R62
VOLUME BOARD CN304
JW326
R108 R112 7 R301 C104
R208 R212 C204 JW347 JW348 C73
Q53
C49
C76 C63 20 C64
JW325
+
C61 JW328 11 C55
R102
R202
+
+
+
R104
R204
C35
R21
X51
JW327
(Page 19)
C54
L1 AM OSC
R11 A A K
D301
L54
C51
C52
C66
JW349 JW350
IC51
1 10
C4
C20
C105
R61
C
C56
+
+
C103
C203
+
C324
Q1
BCE
Q52
S GD
C60
L53
Q102
Q101
C65
R57
ECB
ECB
JW346
+
C58 R59
JW324
C31
C78
R111
JW320 JC4
ECB
+
C48
D304
C119
C219
+
C9
JW322
TP (FM GND)
Q51
ECB
C19 C18
R10 C74 C75
C68
C70
I
D305
R318
JW366
D2
C320
C318
JW367 JW368
L5 AM FERRITE-ROD ANTTENA
R51
R52
R53
JW351 R324 R325 JW352 JW353 JW354
C53
R56
Q305
R55 R54
CT1
R319 R320 R321
D306 D307 D52 D53
JW330
R317
C325
D54
JW331 JW332
C71
JW370
J
C326
JW376
+
L301
JW375 JW374 C323 JW373
C322 1 13 CN302 2 C319 R326 R327 14
JW378
JW377
+
1 S302 CD LID OPEN/CLOSE DETECT 2 C321
JC3 JW379
1 CN301 2
19 20
D308
C72
JW329
+
K
12
1-684-038-
(12)
A
18
CD BOARD CNP702
(Page 16)
B
LCD BOARD CN401
(Page 22)
18
ICF-CD843V
5-7. PRINTED WIRING BOARDS POWER Section · See page 14 for Circuit Boards Location.
1
2
3
4
5
6
7
8
· Semiconductor Location
Ref. No. D901 D902 D903 D905 D906 D907 D908 D909 D910 D911 Q108 Q208 Location E-4 E-3 E-3 E-3 E-2 E-2 E-2 F-2 F-2 D-3 A-4 B-4
JW390
A
R137 R136
CN304
Q108
R135 R237 BCE
BCE
VOLUME BOARD
C127
1
-1 C227 R236 RV301 VOLUME -2
C
MAIN BOARD
B
ON
S301 MEGA BASS OFF R328 R322 C317
Q208
(Page 18)
7
R235
+
1-684-040-
12
C
(12)
TRANSFORMER BOARD
D911
R903 C902
D
CN901 1
C901 4
+
C904
+
R901
(Page 18)
C910
C903
JW902
C907
C908
E
MAIN BOARD KH951
D907
D908
D906 D905 +
C905
R904
E
R902
D902 D903
+
D909
D910
D901
F
C909
JW901
T901 POWER TRANSFORMER
G
TM901
BLK
WHT
TM902
12
1-684-042-
(12)
H
(AC IN)
19
19
ICF-CD843V
5-8. SCHEMATIC DIAGRAM MAIN Section (1/2) · See page 24 for IC Block Diagram.
(1/2)
A1 A2 A3 A4 R209 1k R301 1k D301 1SS119 R213 220k C203 4.7 50V R202 4.7k R204 3.3k R212 220k R208 470k C301 4.7 50V C206 1000p R207 470 R107 470 Q201 2SC4081 -T106 R206 470k R113 220k R106 470k C205 4.7 50V
Q201,202 AMP
A5 C204 47 10V R20 2.2k Q1 2SA1576A B+ SWITCH R21 47k R104 3.3k C73 0.01 C104 47 10V R112 220k C103 4.7 50V Q101 2SC4081 -T106 R109 1k R108 470k C302 220 10V C106 1000p Q101,102 AMP C107 1000p R110 470k R114 220k Q202 2SC4081 -T106 C207 1000p R210 470k R214 220k A6
(Page 21)
S302 CD LID OPEN/CLOSE DETECT
2
C49 47 10V
R102 4.7k
A7 1 R303 47 C328 220 10V Q102 2SC4081 -T106 A8 C105 4.7 50V
R304 47 R220 1k
Q206 2SD1757K MUTING C317 470 10V
Q301 DTA144EUA-T106 INVERTER
C217 1000p D303 DAP202U-T -106
R322 100
Q108,208 BUFFER
R135 100k
R235 100k
1000p
1000p
CN301 20P
C75
C74
R308 2.2k
C117 1000p Q106 2SD1757K R120 1k MUTING C119 4.7 50V 1 Q108 2SC4081 -T106 R136 1k CN304 7P R137 470 -1 C229 4700p R239 0 R222 10k C219 4.7 50V C127 1 R237 470 R236 1k C227 1 Q208 2SC4081 -T106
R309 100k
C307 4.7 50V
C129 4700p
R139 0
R122 10k
-2
RV301 20k/20k VOLUME
7
S301 MEGA BASS R328 2.2k
POWER GND
(Page 23)
C72 1000p
ON
OFF
PREGND2
PREGND1
FILTER
STBY
R OUT
L OUT
NF R
R IN
NF L
BS L
L IN
VCC
BS R
(NC)
POWER AMP IC302 BA5417
R311 1k
0
100
1SS119
1SS119
1SS119
C228 0.1
JC3
R226
R126
C308
CN302 14P
R331 10k
R125 4.7k Q103,203 BASS BOOST SWITCH
C128 0.1
R225 4.7k
C121 0.47 50V
C124 100 10V C125 1000 6.3V C313 1000p
C224 100 10V C225 1000 6.3V CN303 4P SP201 (R-CH) SP101
R327
D306
D307
D308
2200p
47k
47k
100
100
100
C122
C116 0.22
R138 6.8k Q203 2SC4081-T106
R324
R325
R326
4700p
10k
47k
C312 47 10V
Q103 2SC4081-T106
1000p
1000p
R312
R323
C309
C318 100p
C223
C123
C319 100p C320 100p
R224 10k
C215 4700p
C216 0.22
R238 6.8k
R313 1k
R124 10k
C115 4700p
R128
R228 220
220
R129 10k
C310
C222 47 10V R229 10k
100
47
R227 1k
C221 0.47 50V
10V
10V
R127 1k
(L-CH) C314 R231 2.2 C226 0.01 10 50V
(Page 17)
Q303 DTA144EUA-T106 C316 10 50V R315 0
R131 2.2 D304 1SS119
C126 0.01
R132 22k
R232 22k
C324 47 10V
C321 47 10V
Q302 DTC144EUA-T106 R317 470 JC6 0
Q302,303 STANDBY SWITCH
R319
R320
R321
R318 47k
D305 1SS119
C323 0.01
C322 0.01
4.7k
4.7k
4.7k
D901-903,905-910 RECT D901 R956 1 Q953 KTC3203Y Q952 2SD2396K +6V REGULATOR Q951 2SD2396K +3.3V REGULATOR R951 1 R901 10k C904 47 35V D902 1SS119 D903 1SS119 D905 R902 220k D906 1SS119 1SS119 T901 POWER C907 D907 D908 C908 C909 C962 220 10V C961 0.01 D953 MTZJ-T-77 -4.3B C958 220 10V C957 0.01 D952 MTZJ-T-77 -6.8B C954 220 10V C953 0.01 D951 MTZJ-T-77-3.9A C965 1000p C966 1000p D909 D910 C910 0.1 1N4002B 1N4002B 0.1 0.1 1N4002B 1N4002B 0.1 TM902 TRANSFORMER TM901 (AC IN) C903 1SS119 47 35V
L301 1µH
0.01
6800 C952
B+ SWITCH Q955 2SD596 +3.9V REGULATOR C964 220 10V C963 0.01 R960 100 C960 470 10V C959 0.01 R958 220 C956 470 10V C955 0.01 R954 1k R953 470
C951
R962
1k
Q305 2SB1013
+3.9V REGULATOR
16V
D911 MTZJ-T-77-22B
C901 47 35V
R961 1k
KH951 4P
CN901 4P
4.7k
R965 100 C325 220 10V C970 220 10V C969 0.01 D954 UDZS-TE17 -4.3B C968 220 10V
R964 100 C967 0.01
C326 2.2 50V
R966 220
R955 470
· Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : FM [ ] : CD PLAY
R904
C905 47 35V
C902 0.47
R903 100k
The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.
20
20
ICF-CD843V
5-9. SCHEMATIC DIAGRAM MAIN Section (2/2) · See page 15 for Waveform. · See page 24 for IC Block Diagrams.
(2/2)
TP (VT) R10 10k R12 100k R13 100k C46 220p R15 100k
C30 2p D2 KV1610ST1-2 C20 4700p
Q2 2SC3931 -C-TX OSC BUFFER
D3 HVU363ATRU
D4 HVU363ATRU
L5 AM ANT1 (TV/FM) FERRITE-ROD ANTENNA CT1 10p TP (ANT) BPF1 C18 10p C19 0.047 R11 1M C22 7p L1 AM OSC L2 FM/TV RF CT2 10p
C25 1000p
L3 TV RF
CT3 10p
C27 1000p
L4 33nH
C28 4p
C29 1000p
D5 HVU363ATRU
R16 22k
C43 0 C36 22p C32 1000p C31 1000p TP (FM GND) C77 100p C78 0.01 C41 100p C47 1000p C48 0.01
L7 1µH
R19 100
R18 330
C33 0.01
JC4
R6 1k
R9 0 R51 R52 R53 1k 1k 1k C51 C52 C53 100p 100p 47p
C70 0.01
C69 1000p
C68 100p
RV2 100k
C6 1
C7 0.01
C37 1000p
C8 10 50V
C5 0.01
C38 100p
C9 4.7 50V D53 1SS119 A1 D52 1SS119 A2 D54 1SS119 A3 R63 100 C10 0.1 MPRM C11 C12 FM/AM PLL 0.1 V12M 1 MUTE C13 C14 22 470p DETO R7 470 Q51 DTA144EUA -T106 BAND C54 1000p X51 75KHz SELECT PLL2 TUNE C17 4.7 50V C16 0.47 C15 1 TV/FM/AM RF AMP, MPXI PLT2 PLT1 PLL1 MIX,OSC,DET,MPX IC1 CXA1960Q FALC PLLO COMP BAND AMLO 25V AAGC FMBF FTLO REGV TVRO R56 2.2k R55 2.2k R54 2.2k JC5 0
MREF
FMRO GND
ARFI
DQ
BO3
BO2
IFIN
GND(D)
BO1
102
101
GND(A)
CL
CE
DI
AOUT
VDD
XIN
XOUT
AMIN
FMIN
PD
AIN
IC51 LC72122V
R8 2.2k
0.01
MPRG
DDCN
PLLI
STID
MCNT
LOUT
ROUT
VCC
TP (RADIO +B) A4
R57 10
C55 100p
L53 100µH
C61
C60 22 25V
L52 1µH
C63 12p
R58 10k
C64 12p
C58 470p
VCC
OLAG
FMIB
IFCT
FMIN
TVIN
NC
GND
TP (FM ST)
R5 1k
R59 10k
C56 0.33 R4 22 RV1 4.7k R1 4.7k
(Page 20)
470k 470k 1000p 220k 220k
Q52 2SK209GR S Q52,53 LOW-PASS FILTER R65 10k
L8 1µH
R201
R101
C44
R211
R111
C202 1
R2 2.2k
C101
C201
C57 220p
C76 1 C1 10 50V
0.022
0.022
C66 0.01
R64
R66 4.7k
Q53 2SC4081 -T106
L54
1µH
C4 0.01
C35 0.01
C102 1
10
R3 10k
TP (AM GND)
C2 0.01
C3 100 10V
C71 1000p R62 10k
C65 0.01
C62 100 25V
R61 100k
A5 A6 A7 A8
· Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : FM/TV (2 6 CH) ( ) : AM : TV (7 13 CH)/WEATHER (1 7 CH)
21
21
ICF-CD843V
5-10. PRINTED WIRING BOARDS PANEL Section
· Semiconductor Location
Ref. No. D401 D402 D403 D601 D602 D603 D604 D605 D606 D607 D608 D609 IC401 IC402 Q401 Q402 Q403 Q404 Q405 Location B-4 F-10 E-10 D-12 C-12 B-12 F-12 G-12 H-12 H-12 I-12 J-12 E-7 C-8 D-10 H-10 C-10 G-10 G-8
· See page 14 for Circuit Boards Location.
1
2
PRESET BOARD
3
4
S601 BRIGHTNESS
5
LCD BOARD
S602 NAP S603 CD PLAY MODE
6
7
8
9
10
11
12
ALARM BOARD
S616
13
14
A
S610 5 R619 R620 BP601
S604 CLOCK R604
TUNE/TIME SET -
R602 R601
R603
R606 R636 R608 R607 R610 S605 D. S. T. SUMMER T. R643 S621 S619 ALARM SET CD
2 BP604 CN402 1
B
S615 SNOOZE DATE/SLEEP OFF C601 S615 S611 4
BP603
D603
CD
JC401
R621 R622 32
IC402
3 1 R495 C438
D602
C439 JW421 JW422 RADIO
ALARM SET RADIO
JW402
JW403
JW401
C
R630 PRESET TUNING SELECT/PRESET S612 3 C403 R624
+
C437
BCE
S620 R642 CN401 20 19 ALARM MODE
R638 R637 R640
R409
C402
Q403
C455 C433
R408 R402 R401 C401 C457 C456
BCE
+
X402 JW406
Q401
7
C430
2
C429
R412 R414
L402
D
1
R623
R405 R403 R410 R411 R413 R415 R416 1 80
C436
R485
R406 R404
C435 C434 C431 C432
JW407 JW408 R641
D601
BUZZER
S617 ALARM SET BUZZER
R480
R479
R478
JW418
S613 2
R418 R420 R422
R417 R419 R421
X401
C427
B
MAIN BOARD CN301
R634 R633
R632
1
(Page 18)
20
JW409
E
S614 1
R427 R429 R431 R433
21
60
R473 R472 R471 C418 C417
C420
R626
LCD401 LIQUID CRYSTAL DISPLAY
R423 R424 R425 R426 R428
IC401
61
R475 R474 C424 C422
R476
R631 BP605 S618 TUNE/TIME SET +
12
1-684-036-
2 1
(12)
JW411
JW410
JW419
R430 R432 R434
D403
7
C453
LED BOARD
D604
R627
12 (12)
R435 R436 R437 R439 R440 R441 R438 R443 C449
40
41
R470 C416 R469 R468 C415 C414 R467
F
R628
1-684-037-
D402
C441
R644
C444 R453
C410
C446 R456 R455 R460 R459 R451 C407
R444 R452
L401
R466 C411
1
JW420
ECB
C406
R446 R445
R464
R490 C448 2 1
R489
Q405 +
C405
D605
R448
R461
R462
C408
R454
R457
R491
R492
R493
G
1
R442
R449
R463 C409
Q404
ECB
R450
C452
R646
JW416
JW415
JW414
JW413
JW412
JW417
R458
R487
R494
R488
C447
ECB
Q402
12 (12)
D606
1-684-034-
H
BP602 R616 R612 R611 R614 R613 ALARM RESET R618 R617 S609 OFF
R648 R650 R652
D604 - 609 (LCD BACK LIGHT)
I
S606 SLEEP
S607 CD
S608 RADIO BAND
D608
D609
R653 R655 R654
I
R651
D607
R649
R647
R645
C404
R447
C443
C445
C413
L403
C442
1-684-0351 2
12 (12)
22
22
ICF-CD843V
5-11. SCHEMATIC DIAGRAM PANEL Section · See page 15 for Waveforms. · See page 26 for IC Pin Function Description.
D601 TOL-31CSGAKAA -KS01 BUZZER D602 TOL-31CSGAKAA -KS01 RADIO D603 TOL-31CSGAKAA -KS01 CD R632 S616 TUNE/ TIME SET -
AA17 AA16 AA15 AA14 AA13 AA12 AA11 AA25 AA10 AA18 AA19 AA20 AA21 AA22 AA23 AA24 AA26 AA27 AA28 AA29 AA30 AA31 AA32
R641 220
LCD401 LIQUID CRYSTAL DISPLAY
S617 ALARM SET BUZZER
S618 TUNE/TIME SET +
S619 ALARM SET CD
S620 ALARM MODE
S621 ALARM SET RADIO
R642 220
SEG12
SEG11
SEG16
SEG26
SEG23
SEG19
SEG27
SEG24
SEG25
SEG22
SEG21
SEG20
SEG18
SEG17
SEG15
SEG14
SEG13
SEG10
COM3
SEG8
SEG9
SEG5
SEG4
SEG3
SEG2
SEG1
COM1
SEG7
SEG6
COM0
COM2
SEG0
R631
220k 100k
R633 R634
100k 47k R636 22k
R637 R638
47k 22k R640 10k
R643 220
BP605
S617
S618
S619
S620
S621
D604-609 (LCD BACK LIGHT) R644 1 7 D604 TOL-30BUGBKAA -K51-U5S 1 7 D605 TOL-30BUGBKAA -K51-U5S R645 100 470
AA4
AA5
AA7
AA8
AA1
AA2
AA3
AA6
AA9
R646 R647
470 100
AA31
AA22
AA18
AA19
AA20
AA21
AA23
AA24
AA25
AA26
AA27
AA28
AA29
AA30
AA32
C403 0.1
R405 47k
C402 0.1
R403 47k
C401 0.1
R401 22k
R402 47k
R406 22k
R404 22k R408 22k JC401 0
R648 D606 TOL-30BUGBKAA -K51-U5S R649
470 100
1k
1k R411
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
1k
R414
R415
R420
R424
R423
R422
R421
R419
R418
R417
R416
R413
R412
R410
1k
R650 D607 TOL-30BUGBKAA -K51-U5S R651
470 100
R409 10k
R652 D608 TOL-30BUGBKAA -K51-U5S
0.22 0.22 0.22
470 100
R653
SEG10
SEG9
VLC0
VLC1
SEG8
VLC2
SEG7
SEG6
SEG5
SEG4
COM2
COM3
COM0
SEG3
COM1
SEG2
SEG1
SEG0
NC
NC
R654 D609 TOL-30BUGBKAA -K51-U5S R655
470 100
C456
AA17 AA16 AA15 AA14 AA13 AA12 AA11 AA10 AA9 AA8 R619 470k R621 220k R623 100k R627 47k AA7 AA6 R620 220k R622 100k R624 47k R626 22k R628 22k R630 10k CN402 2P AA5 AA4 AA3
BP604
R425 R426 R427 R428 R429 R430 R431 R432 R433 R434 R435 R436 R437 R438 R439 R440 R441 L401
1k SEG11 1k SEG12 1k SEG13 1k SEG14 1k SEG15 1k SEG16 1k SEG17 1k SEG18 1k SEG19 1k SEG20 1k SEG21 1k SEG22 1k SEG23 1k SEG24 1k SEG25 NC R479 SEG26 NC R478 SEG27 AVDD NC HP ON R475 CD OPEN VERSION
DATA CD/RADIO CLK CD/RADIO LAT CD/RADIO BUZZERMUTE DATA-IN CD POWER ON
BUZZER LED RADIO LED CD LED NAP LED C436 RESET X402 X2 X1 VSS0 C431 VDD0
100 220
C457
0.01 C435 47p C434 47p R485 10k
C455
1
2
4.19MHz
C433 100 10V
1
2
0.1
470 R494
X401 TX2 SYSTEM CONTROLLER IC401 µPD789477GC- A19-8BT TX1 IC BACK LIGHT 1 BACK LIGHT 0 R480 1k 1k 1k
32.768KHz
C432 2.2 C430 22p
L402
1
Q403 DTA144EUA -T106
S610
S611
S612
S613
S614
C601 0.01
2 S615
BP603
AA2 AA1
1k 1k
R489 2.2k C448 1 1k 1k BB15 BB14 R476 47k D403 1SS119 Q401 DTA144EUA -T106 Q401-404 LED DRIVE R490 100k Q404 2SC4081 -T106
5
4
3
2
1
SNOOZE DATE/SLEEP OFF
HP SW R474 A MUT C427 10K C424 0.01
PRESET TUNING,SELECT/PRESET
BUZZER
CD ON
AC IN
AVSS
KEY3
WRQ
10V
10k
10k
2.2
0.01
100
DRF
RADIO ON
KEY1
FSEQ
NC
KEY2
XRST
KEY0
C405
R443
R444
C449
C404
R487 2.2k C447 1 R488 100k Q402 2SD596
1k
1k
R451 100 R601 220k R602 100k R603 100k R604 47k R606 22k R607 47k R608 22k R610 10k R448 100
R447 1k
R462
R463
R464
10k
R454 100
R495 470k CN401 20P D402 1SS119 L403 0
RESET SIGNAL GENERATOR BP601 S601 S602 S603 S604 S605 R457 100
2200p 220k 100k 0.01 0.01 220k 100k 220k 100k 220k 100k 100k 100p 220k 47 47 47 10k 1k 1k 1k
R458 10k
RST G IC402 PST600L-T
V
R491
R492
R493
C429 22p
1k
BB15 BB14 BB13 BB12 BB11
BRIGHTNESS
NAP
CD PLAY MODE
CLOCK
D.S.T SUMMER T.
0
R459
R455
R456
R460
R445
R446
R449
R450
R452
R453
R461
C443
C444
C410
C411
R467
R468
R470
R472
0
R466
R469
R471
R473
BB7
BB4
BB1
BB2
BB3
BB5
BB6
BB8
BB9
BB10
BB11
BB12
BB13
R611 220k
R613 100k
R617 47k
C445 0.01
C446 0.01
C437 0.01
C438 0.1
C439 470 4V
C441 0.1
C442 0.1
BB10 BB9 BB8
R612 100k BP602 S606
R614 47k S607
R616 22k S608
R618 22k S609
C406 100p
C407 0.01
BB7 BB6
100p 100p 100p 100p 100p 0.01 0.01 0.01 1000p
C452 1 SLEEP CD RADIO BAND ALARM RESET R442 220k OFF Q405 2SC4081-T106 MUTING
47p
BB5 BB3
C415
C413
C414
C417
C408
C409
C416
C420
C422
C418
BB2 BB1 BB4
(Page 20)
C453 1
23
23
· Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : FM [ ] : CD PLAY
ICF-CD843V
· IC Block Diagrams CD Board IC701 LC78645NE-U
FR VVDD PCKIST VVSS PDO2 PDO1 CONT1 CONT2 CONT3
IC702
*WRQ
VSS VDD5
BA5826FP-E2
*RES
LDD
LDS
DRF
DO
CL
CE
SP 1 D.BUFF SP+ 2
80 APC
79
78 77 76 75 74 73 PLL VCEC
72 71 70
69 68
67
66
65 64 63 62 61
DI
28 GND 27 SL D.BUFF LEVEL SHIFT LEVEL SHIFT D.BUFF 26 SL+ D.BUFF
DRF CLV, CAV CONTROL SLCO 1 SLCIST 2 EFMIN 3 RF 4 RFVDD 5 RFVSS 6 + + + SLICE LEVEL CONTROL RUPTURE DEFECT
COMMAND INTERFACE
SPIN 3 RST 4
25 SLIN THERMAL SHUT-DOWN MONITOR
REGULATOR
24 (SLIN) 23 VREF VCC VCC 22 VCC 21 VCC 20 (FIN)
LEVEL SET
PH
+ + VREF SERVO PROCESSOR + RAM INTERPOLATION MUTE ATTENUATION DEEMPHASIS SERIAL OUT 60 DATA 59 DATACK 58 LRSY 57 ASDFIN 56 ASDACK 55 ASLRCK
REGB 5 REGO 6 MUTE 7 GND 8 TIN 9 (TIN) 10
RAM
FIN1 7
MIX
EQ LPF
AGC
BH
FIN2 8 TIN1 9
+
+
+ TBAL
+
LPF LPF
SW
EXTERNAL AUDIO IN
DRIVER MUTE 19 FIN LEVEL SHIFT LEVEL SHIFT
VREF 11 ERROR CORRECTION AUDIO CD C1-2, C2-2 +
REF1 12 FE TEC TE RFMON 13 14 15 16
JITTC 17
ADAVDD 18 ADAVSS 19
TDO 20
CONT4
CONT5
SBCK/CONT6
DEFECT V/*P
MONI1
MONI2
MONI3
MONI4
MONI5
FDO SPDO SLDO GPDAC
SBCK/FG
FSEQ
BOUT
TEST
VSS VDD
+ A/D
TIN2 10
TBAL
AUTO ADJUST
D.BUFF
54 16MOUT 53 EFLG 52 C2F 51 XVSS 50 FSX/16MIN
D.BUFF 18 F D.BUFF 17 F+ 16 NC 15 OPIN
T 11 D.BUFF T+ 12 GND 13 OPOUT 14
VREF
MONITOR CONTROL
TRACK JUMP CLOCK GENERATOR FRAME SYNC DETECT, PROTECT INSERT, EFM DECODE
JITTER DETECT
49 XIN 48 XOUT 47 XVDD
8FS DIGITAL FILTER 1BIT DAC
SUBCODE DECODE CRC S/H D/A SW MONITOR SIGNAL SELECTOR
LPF AUDIO OUT
GENERAL-PURPOSE PORTS 21 22 23 24 25 26 27 28 29 30
46 45 44 43 42 41
RVDD RCHO RVSS LVSS LCHO LVDD
31 32
33
34
35
36 37 38 39 40
24
24
ICF-CD843V
MAIN Board IC1 CXA1960Q
MREF GRND FMRO FMIB FMIN IFCT NC TVIN ARFI OLAG
30
29
28 27
26
25
24 23 22 21
MPRM 31
AM RF AMP
FM RF AMP
TV RF AMP OL DET 1.25V FM/TV OSC
20 TVRO 19 REGV
V12M 32
MUTE 33 MUTE FM DET AM AGC AAGC 34
FM LMT 150kHz FM/TV LPF PSN + AM BPF 45kHz TUNE MPX DECODER 38kHz STEREO AUDIO L STID + STEREO AUDIO R AM OSC AM/FM: 1/2 TV: 1/8 1.25V 1/X + 1/2 1.65V 1 VCO 2 MPRG 3 4 5 ROUT DDCN LOUT 6 7 8 9 PLLI STID MCNT GRND 10 VCC
REFERENCE DIVIDER PHASE DETECTOR CHARGE PUMP POWER ON RESET 1/2
18 FTLO 17 FMBF
DETO 35
16 AMLO 15 FALC 14 PLLO 13 COMP
AGC AMP
MPXI 36
PLT2 37 PLT1 38 PLL1 39 PLL2 40 PD VCO 19kHz 1/2 14V
1.25V
12 BAND
11 TUNE PLAP
IC51
LC72122V-TLM
IC302
BA5417
CE DI CL DO
1 2 3 4
CCB I/F 20 XOUT 19 XIN 18 VSSA 17 AOUT 16 AIN 15 PD 14 VSS BS 1 2 3 4 5
T.S.D. + +
STANDBY BS 6 7 8 FILTER 9 10 11 12 13 14 15
B01 B02 B03 I01 I02
5 6 7 8 9
DATA SHIFT REGISTER LATCH
12BITS PROGRAMMABLE DIVIDER
NC
OUT2 VCC OUT1
BS1
NF1
IN1
IN2
BS2
STBY
POWER GND
FILTER
NF2
UNLOCK DETECTOR 13 VDD
UNIVERSAL COUNTER
SWALLOW COUNTER 1/16,1/17 4BITS
12 FMIN
11 AMIN
IFIN 10
PRE GND1 PRE GND2
25
ICF-CD843V
· IC Pin Function Description
LCD BOARD IC401 µPD789477GC-A19-8BT (SYSTEM CONTROLLER) Pin No. 1, 2 3 to 5 6 to 9 10 to 37 38 39 40 41 42 43 to 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 to 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Pin Name NC VLC0 to VLC2 COM0 to COM3 SEG0 to SEG27 AVDD CD OPEN VERSION FSEQ NC KEY1 to KEY4 AVSS CD ON AC IN WRQ BUZZERMUTE BUZZER LAT CD/RADIO
DATA CD/RADIO CLK CD/RADIO
I/O -- -- O O -- I I I -- I -- O I I O O O O O I I O O O O I O -- O O -- I O -- -- I O I O O O O Not used
Description
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
Common drive signal output to the liquid crystal display Segment drive signal output to the liquid crystal display Power supply terminal (+3.3V) (analog system)
CD lid open/close detection signal input terminal "L": CD lid is closed, "H": CD lid is opened
Destination setting terminal Synchronizing signal detection signal input from the digital signal processor Not used Key input terminal (A/D input) Ground terminal (analog system) Power on/off control signal output for the CD +3.3V power supply Power failure detection signal input terminal Interruption detection signal input from the digital signal processor Buzzer sound muting on/off control signal output Buzzer sound drive signal output Chip enable signal output to the digital signal processor and FM/AM PLL Serial data output to the digital signal processor and FM/AM PLL Serial data transfer clock signal output to the digital signal processor and FM/AM PLL Serial data input from the digital signal processor Focus on/off detection signal input from the digital signal processor Reset signal output to the digital signal processor Power amplifier on/off control signal output Audio line muting on/off control signal output "L": reset "L": radio power on Power on/off control signal output for the radio +3.3V power supply "L": muting on "H": muting on "L": CD power on "L": power failure, "H": power on
DATA-IN CD DRF XRST RADIO ON POWER ON A MUT HP SW HP ON NC BACK LIGHT 0 BACK LIGHT 1 IC TX1 TX2 VDD0 VSS0 X1 X2 RESET NAP LED CD LED RADIO LED BUZZER LED
"L": standby mode, "H": power amplifier on
Connection detection signal input teminal of the headphone jack "L": headphone connected, "H": no headphone Not used Headphone on/off control signal output terminal Not used LED drive signal output of the liquid crystal display back light LED drive signal output of the liquid crystal display back light Internal connection terminal Sub system clock input terminal (32.768 kHz) Sub system clock output terminal (32.768 kHz) Power supply terminal (+3.3V) Ground terminal Main system clock input terminal (4.19 MHz) Main system clock output terminal (4.19 MHz) System reset signal input "L": reset For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H" LED drive signal output terminal of the NAP LED drive signal output terminal of the CD "L": LED on "L": LED on "L": LED on "L": LED on Not used "L": all LEDs on "L": half LEDs on "L": headphone on Not used
LED drive signal output terminal of the RADIO LED drive signal output terminal of the BUZZER
26
ICF-CD843V SECTION 6 EXPLODED VIEWS
NOTE: · -XX and -X mean standardized parts, so they may have some difference from the original one. · Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE) . . . (RED) Parts Color Cabinet's Color · Items marked "*" are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. · Accessories are given in the last of the electrical parts list. · Refer to "SERVICING NOTES" (page 3) for original type and LIV type. The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.
6-1. CABINET SECTION
upper cabinet section
8 7
5
9
3
4 2
7
7 9
6
7
rear cabinet section
1
front cabinet section
7
Ref. No. 1 * 2 3 4 5
Part No. 3-368-852-01 1-684-037-12 3-238-159-21 3-831-441-11 X-3384-685-1
Description FOOT PRESET BOARD BUTTON (SNOOZE) CUSHION (B) COVER ASSY
Remark
Ref. No. 6 7 8 9
Part No. 3-254-142-01 3-253-143-01 3-254-143-11 3-254-145-01
Description SCREW (B3), (+) BV TAPPING SCREW (B2.6), (+) P TAPPING SCREW (B3), (+) BV TAPPING SCREW (B3), (+) BV TAPPING
Remark
27
ICF-CD843V
6-2. UPPER CABINET SECTION
67
Optical pick-up section (KSM-213RDP)
B
56
56 55
58
57 57
58
58
66 54
L5 #1
68
53 70
S302
62
60
71
ANT1
61
A
MAIN board
A B
69 51 52 69 69
64 63
59 65 69
65
Remark Ref. No. 64 65 * 66 67 68 69 70 71 ANT1 L5 S302 #1
not supplied
Part No. 3-243-253-01 3-243-252-01 A-3347-089-A 3-923-736-01 1-757-689-11 3-254-143-01 3-253-143-01 3-243-249-01 1-501-907-61 1-428-938-11 Description CUSHION (A) CUSHION (SP) CD BOARD, COMPLETE COVER, CD CABLE, FLEXIBLE FLAT (16 CORE) SCREW (B3), (+) BV TAPPING SCREW (B2.6), (+) P TAPPING SHEET (MAIN) ANTENNA, FM WIRE COIL, FERRITE-ROD ANTENNA (MW) Remark
Ref. No. 51 52 53 54 55 56 57 58 59 60 61 62 63
Part No. 3-922-112-31 3-238-155-31 3-019-395-01 1-452-899-11 3-238-156-21 3-046-853-11 3-046-853-01 3-252-828-01 A-4542-998-A 3-238-166-01
Description DAMPER CABINET (UPPER) PLATE, CHUCKING MAGNET LID, CD RUBBER, VIBRATION PROOF (GREEN) RUBBER, VIBRATION PROOF (RED) SCREW (B2.6), (+) PWH TAPPING MAIN BOARD, COMPLETE HOLDER (ANTENNA)
1-824-018-11 CABLE, FLEXIBLE FLAT (14 CORE) 3-238-173-01 SPRING (CD) 3-243-255-01 CUSHION (C)
1-692-960-11 SWITCH, PUSH (1 KEY) (CD LID OPEN/CLOSE DETECT) 7-685-853-04 SCREW +BVTT 2X6 (S)
28
ICF-CD843V
6-3. FRONT CABINET SECTION
SP101
113 113
SP201
114
109
103 103 110
101
LCD401
107 103
102 103
104
LCD board
108
110 105
106
Ref. No. 101 102 103 104 * 105 * 106 107
Part No.
Description
Remark
Ref. No. 108 109 110 113 114
Part No. 1-823-761-11 3-238-758-01 3-254-143-01 3-238-174-01 X-3384-684-1
Description CABLE, FLEXIBLE FLAT (20 CORE) SHEET (+/-) SCREW (B3), (+) BV TAPPING SPRING (SP) CABINET (FRONT) ASSY
Remark
A-4547-002-A LCD BOARD, COMPLETE (including ALARM board, LED board) 3-238-169-01 CASE (LCD) 3-831-441-11 CUSHION (B) 3-243-251-01 CUSHION (LIGHT GUIDE PLATE) 1-684-036-12 ALARM BOARD 1-684-035-12 LED BOARD 3-238-164-01 HOLDER (LCD)
LCD401 1-804-647-11 DISPLAY PANEL, LIQUID CRYSTAL SP101 1-529-976-11 SPEAKER (6.6cm) (L) SP201 1-529-976-11 SPEAKER (6.6cm) (R)
29
ICF-CD843V
6-4. REAR CABINET SECTION
160 160
155
153 159
159
161 156
159 159
not supplied
157
152
T901
158
151
159
The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.
Ref. No. 151 * 152 153 155 * 156 157
Part No. 3-238-170-01 1-684-042-12 3-238-165-01 3-238-154-31 1-684-040-12
Description BRACKET (TRANSFORMER) TRANSFORMER BOARD HOLDER (TRANSFORMER) CABINET (REAR) VOLUME BOARD
Remark
Ref. No. 0 158 159 160 161 0 T901
Part No. 1-757-636-11 3-254-143-01 3-831-441-99 3-243-631-01 1-435-578-41
Description CORD, POWER SCREW (B3), (+) BV TAPPING CUSHION, STOPPER CUSHION (D) TRANSFORMER, POWER
Remark
3-227-332-31 KNOB (VOL)
30
ICF-CD843V
6-5. OPTICAL PICK-UP SECTION (KSM-213RDP)
553
552
555
559
551
not supplied
556 554
557
558
M702
The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. 551 * 552 * 553 554 0 555 Part No. Description Remark Ref. No. 556 557 * 558 * 559 M702 Part No. 2-626-908-01 2-174-500-01 2-169-385-01 2-169-384-01 X-2162-712-2 Description SHAFT, SLED SCREW (M2X3) SPRING, SLED SHAFT (S), GEAR GEAR ASSY (R) (RP), MOTOR (SLED) Remark
X-2162-707-2 CHASSIS ASSY (RDP) (RP), MOTOR (including M701) (SPINDLE) 2-647-408-02 GEAR (B) 2-169-065-01 GEAR (A) 2-169-388-01 TAPPING (M2), +PWB 8-820-161-02 OPTICAL PICK-UP (KSS-213R/C2RP)
31
ICF-CD843V ALARM CD SECTION 7 ELECTRICAL PARTS LIST
· Items marked "*" are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. · SEMICONDUCTORS In each case, u: µ, for example: uA. . : µA. . uPA. . : µPA. . uPB. . : µPB. . uPC. . : µPC. . uPD. . : µPD. . · CAPACITORS uF: µF · COILS uH: µH The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. When indicating parts by reference number, please include the board.
NOTE: · Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. · -XX and -X mean standardized parts, so they may have some difference from the original one. · RESISTORS All resistors are in ohms. METAL: Metal-film resistor. METAL OXIDE: Metal oxide-film resistor. F: nonflammable
Ref. No. *
Part No.
Description
Remark
Ref. No. C716 C717 C720 C721 C722 C723 C724 C725 C726 C727 C728 C729 C730 C731 C732 C733 C734 C735 C736 C738 C739 C740 C741 C742 C743 C744 C745 C746 C747 C750 C751 C754 C755
Part No. 1-162-974-11 1-163-021-11 1-162-919-11 1-162-919-11 1-162-919-11 1-162-974-11 1-162-919-11 1-162-964-11 1-162-964-11 1-162-964-11 1-165-176-11 1-125-837-11 1-107-826-11 1-165-176-11 1-104-658-91 1-104-658-91 1-162-968-11 1-126-916-11 1-162-968-11 1-164-156-11
Description CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT ELECT CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP 0.01uF 0.01uF 22PF 22PF 22PF 0.01uF 22PF 0.001uF 0.001uF 0.001uF 0.047uF 1uF 0.1uF 0.047uF 100uF 100uF 0.0047uF 1000uF 0.0047uF 0.1uF 0.1uF 470uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 100uF 100uF 100uF 0.1uF 0.01uF 0.01uF 10% 5% 5% 5%
Remark 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 16V 6.3V 16V 16V 10V 10V 50V 6.3V 50V 25V 25V 10V 25V 25V 25V 25V 25V 10V 10V 10V 25V 25V 25V
1-684-036-12 ALARM BOARD (Included in LCD board) ************ < DIODE > D601 D602 D603 6-500-040-01 LED TOL-31CSGAKAA-KS01 (BUZZER) 6-500-040-01 LED TOL-31CSGAKAA-KS01 (RADIO) 6-500-040-01 LED TOL-31CSGAKAA-KS01 (CD) < RESISTOR > R631 R632 R633 R634 R636 R637 R638 R640 R641 R642 R643 1-216-849-11 1-216-845-11 1-216-845-11 1-216-841-11 1-216-837-11 1-216-841-11 1-216-837-11 1-216-833-11 1-216-813-11 1-216-813-11 METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP 220K 100K 100K 47K 22K 47K 22K 10K 220 220 220 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W
5% 10% 10% 10% 10% 10% 10% 10% 20% 20% 10% 20% 10%
1-216-813-11 METAL CHIP < SWITCH >
1-164-156-11 CERAMIC CHIP 1-126-925-91 ELECT 1-164-156-11 CERAMIC CHIP 1-164-156-11 CERAMIC CHIP 1-164-156-11 CERAMIC CHIP 1-164-156-11 1-164-156-11 1-104-658-91 1-104-658-91 1-104-658-91 CERAMIC CHIP CERAMIC CHIP ELECT ELECT ELECT
20%
S616 S617 S618 S619 S620
1-771-349-21 1-771-349-21 1-771-349-21 1-771-349-21 1-771-349-21
SWITCH, TACT (TUNE/TIME SET , .) SWITCH, TACT (ALARM SET BUZZER) SWITCH, TACT (TUNE/TIME SET +, >) SWITCH, TACT (ALARM SET CD) SWITCH, TACT (ALARM MODE)
S621 1-771-349-21 SWITCH, TACT (ALARM SET RADIO) ************************************************************ * A-3347-089-A CD BOARD, COMPLETE ******************* < CAPACITOR > C701 C702 C703 C704 C705 C706 C707 C708 C709 C711 1-162-964-11 1-126-947-11 1-107-826-11 1-162-919-11 1-162-968-11 1-126-960-11 1-115-156-11 1-162-927-11 1-164-156-11 1-162-974-11 CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP 0.001uF 47uF 0.1uF 22PF 0.0047uF 1uF 1uF 100PF 0.1uF 0.01uF 10% 20% 10% 5% 10% 20% 5% 50V 35V 16V 50V 50V 50V 10V 50V 25V 50V
20% 20% 20%
1-164-156-11 CERAMIC CHIP 1-162-970-11 CERAMIC CHIP 1-162-970-11 CERAMIC CHIP < CONNECTOR >
10% 10%
* CNP701 1-779-466-11 CONNECTOR, FFC/FPC 16P * CNP702 1-784-736-11 CONNECTOR, FFC 14P < FERRITE BEAD > FB701 1-469-701-21 FERRITE, EMI (SMD) (1608)
32
ICF-CD843V CD
Ref. No. Part No. Description < IC > IC701 IC702 6-701-617-01 IC LC78645NE-U-E 6-701-787-11 IC BA5826FP-E2 < SHORT > JC701 JC702 JC703 JC704 1-216-864-11 1-216-864-11 1-216-864-11 1-216-813-11 SHORT CHIP SHORT CHIP SHORT CHIP METAL CHIP < COIL > L706 1-414-445-11 FERRITE, EMI (SMD) (1608) 3-831-441-11 CUSHION (B) < TRANSISTOR > < CAPACITOR > Q701 8-729-054-57 TRANSISTOR < RESISTOR > R701 R702 R703 R704 R705 R706 R707 R708 R709 R710 R711 R712 R714 R715 R716 R717 R718 R719 R720 R721 R722 R723 R724 R725 R726 R727 R728 R729 R730 R731 R741 R743 R744 1-216-841-11 1-216-835-11 1-216-835-11 1-216-835-11 1-216-835-11 1-216-841-11 1-216-797-11 1-216-833-11 1-216-837-11 1-216-829-11 1-216-815-11 1-216-809-11 1-216-811-11 1-216-811-11 1-216-821-11 1-216-821-11 1-216-821-11 1-216-809-11 1-216-809-11 1-216-821-11 1-216-809-11 1-216-809-11 1-216-841-11 1-216-819-11 1-216-819-11 METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP 47K 15K 15K 15K 15K 47K 10 10K 22K 4.7K 330 100 150 150 1K 1K 1K 100 100 1K 100 100 47K 680 680 2.2K 10K 220 1K 2.2K 6.8K 6.8K 100K 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 0.5% 0.5% 5% 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W KTN2907AS-RTK C401 C402 C403 C404 C405 C406 C407 C408 C409 C410 C411 C413 C414 C415 C416 C417 C418 C420 C422 C424 C427 C429 C430 C431 C432 C433 C434 C435 C436 C437 C438 C439 C441 C442 C443 C444 C445 C446 C447 C448 C449 1-107-826-11 1-107-826-11 1-107-826-11 1-162-970-11 1-124-584-00 CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT 0.1uF 0.1uF 0.1uF 0.01uF 100uF 100PF 0.01uF 0.01uF 100PF 100PF 0.0022uF 100PF 100PF 47PF 100PF 100PF 0.001uF 0.01uF 0.01uF 0.01uF 10K 22PF 22PF 0.1uF 2.2uF 100uF 47PF 47PF 0.01uF 0.01uF 0.1uF 470uF 0.1uF 0.1uF 0.01uF 0.01uF 0.01uF 0.01uF 1uF 1uF 2.2uF 10% 10% 10% 10% 20% 5% 10% 10% 5% 5% 10% 5% 5% 5% 5% 5% 10% 10% 10% 10% 5% 5% 5% 10% 10% 20% 5% 5% 10% 10% 10% 20% 10% 10% 10% 10% 10% 10% 10% 10% 10% 16V 16V 16V 25V 10V 50V 25V 25V 50V 50V 50V 50V 50V 50V 50V 50V 50V 25V 25V 25V 1/10W 50V 50V 16V 6.3V 10V 50V 50V 25V 25V 16V 4V 16V 16V 25V 25V 25V 25V 6.3V 6.3V 6.3V 0 0 0 220 Remark Ref. No. Part No. Description < VIBRATOR > X701 1-795-173-21 VIBRATOR, CERAMIC (33.8688MHz) ************************************************************ A-4547-002-A LCD BOARD, COMPLETE (includes ALARM board and LED board) ******************** 1-823-761-11 3-238-164-01 3-238-169-01 3-243-251-01 3-254-143-01 CABLE, FLEXIBLE FLAT (20 CORE) HOLDER (LCD) CASE (LCD) CUSHION (LIGHT GUIDE PLATE) SCREW (B3), (+) BV TAPPING
LCD
Remark
5%
1/10W
1-162-927-11 CERAMIC CHIP 1-162-970-11 1-162-970-11 1-162-927-11 1-162-927-11 1-162-966-11 1-162-927-11 1-162-927-11 1-162-923-11 1-162-927-11 1-162-927-11 1-162-964-11 1-162-970-11 1-162-970-11 1-162-970-11 1-216-833-11 1-162-919-11 1-162-919-11 1-107-826-11 1-125-838-11 1-124-584-00 1-162-923-11 1-162-923-11 1-162-970-11 1-162-970-11 1-107-826-11 1-126-518-11 1-107-826-11 1-107-826-11 1-162-970-11 1-162-970-11 1-162-970-11 1-162-970-11 1-125-837-11 1-125-837-11 CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP METAL CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP
1-216-825-11 METAL CHIP 1-216-833-11 METAL CHIP 1-216-813-11 METAL CHIP 1-216-821-11 METAL CHIP 1-216-825-11 METAL CHIP 1-218-867-11 METAL CHIP 1-218-867-11 METAL CHIP 1-216-845-11 METAL CHIP < SWITCH >
S701
1-571-936-11 SWITCH, LEAF (LIMIT)
1-125-838-11 CERAMIC CHIP
33
ICF-CD843V LCD
Ref. No. C452 C453 C455 C456 C457 Part No. 1-125-837-11 1-125-837-11 1-115-467-11 1-115-467-11 Description CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP 1uF 1uF 0.22uF 0.22uF 0.22uF 10% 10% 10% 10% 10% Remark 6.3V 6.3V 10V 10V 10V R427 R428 R429 R430 R431 R432 R433 R434 R435 R436 R437 R438 R439 R440 R441 R442 R443 R4