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ICF-M410L

SECTION 3

ELECTRICAL ADJUSTMENTS

BAND : AM

• Repeat the procedures in each adjustment several times for the

maximum level meter indication.

• The frequency coverage and tracking adjustments should be finally

done by the trimmer capacitors.

MW/LW SECTION

FM SECTION

[Adjustment Location : Main board] (Component side)

Put the lead-wire
antenna close to
the set.

30% amplitude modulation by 400Hz
signal.
Output level : as low as possible

AM RF signal
generator

0.01

FM RF signal
generator

telescopic
antenna
terminal

75kHz (100%) amplitude modulation
by 1kHz signal.
Output level : as low as possible

Ω

set

–

level meter

Speaker terminal (EPJ301)

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T15

450 kHz

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

87.5 MHz

CT3

108 MHz

BAND : FM

MAIN BOARD

(Component side)

CT2
LW TRACKING
adjustment

CT4
LW FREQUENCY
COVERAGE
adjustment

L4
MW FREQUENCY
COVERAGE
adjustment

T1
AM IF
adjustment

L6,CT3
FM TRACKING
adjustment

CT1
MW TRACKING
adjustment

MW/LW TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

ANT102

162 kHz

CT2

243 kHz

ANT102

603 kHz

CT1

1,404 kHz

MW/LW FREQUENCY COVERAGE ADJUSTMENT

Adjust for a maximum reading on level meter.

CT4

153 kHz

531 kHz

Содержание ICF-M410L

Страница 1: ... mW at 10 harmonic distortion Output v earphone jack ø3 5 mm minijack Power requirements 4 5 V DC three R6 size AA batteries External power source DC IN 4 5 V Dimensions Approx 205 104 40 5 mm w h d Approx 8 1 3 4 1 8 1 5 8 inches not incl projecting parts and controls Approx 212 104 42 5 mm w h d Approx 8 3 8 4 1 8 1 11 16 inches incl projecting parts and controls Mass Approx 504 g 17 8 oz incl b...

Страница 2: ...ng 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 1 GENERAL 3 2 DISASSEMBLY 4 3 ELECTRICAL ADJUSTMENTS 5 4 DIAGRAMS 4 1 Block Diagram 7 4 2 Schematic Diagram 8 4 3 Printed Wiring Board 9 4 4 IC Pin Function Description 10 4 5 IC Block Diagram 10...

Страница 3: ...lock can be adjusted when the radio is off 1 To stop flashing of the display press CLOCK mb CLOCK for ICF M410S 2 While holding down CLOCK turn TUNE TIME SET to set the clock to the current time When you turn the control knob a little to or the clock digits move forward or back one by one and when you turn the control knob further to or the clock digits move rapidly When you release CLOCK the cloc...

Страница 4: ... 1 Screw B 3 6 3 Five screws BTP 3 14 q Two screws P 2 8 qf Two screws P 2 8 6 Screw PTPWH 2 6 8 7 Side panel L qs Side panel R qd Arm jog 8 JACK board qg KEY board qj MAIN board qh Knob 2 Antenna telescopic Cabinet rear 4 Claws qa Claws Remove the Claws Remove the Claws Knob jog 5 Plate contact Cabinet front sub assy ...

Страница 5: ...litude modulation by 1kHz signal Output level as low as possible 16 Ω set level meter Speaker terminal EPJ301 AM IF ADJUSTMENT Adjust for a maximum reading on level meter T15 450 kHz FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L6 87 5 MHz CT3 108 MHz BAND FM MAIN BOARD Component side CT2 LW TRACKING adjustment CT4 LW FREQUENCY COVERAGE adjustment L4 MW FREQUENCY COVERAGE adj...

Страница 6: ...tment for repair Voltages are dc with respect to ground under no signal detuned conditions no mark FM Impossible to measure Voltages are taken with aVOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Signal path F FM f AM LW MW The components identified by mark 0 or dotted line with mark 0 are critical for safety Waveform 2Vp p 1 IC101 wf XOUT 1 4V Note ...

Страница 7: ... MW LW MUTE BEEP B POWER BAND FM AM BAND MW LW MUTE BEEP POWER CN1 W101 CN2 W102 VDD 23 4 5 2 3 52 Q101 AMP 20 21 VCOL VCOH DC DC CONVERTER TUNING CONTROL Q153 Q154 T101 Q151 Q152 19 IC102 3 2V VOLTAGE DET IC103 2 5V VOLTAGE DET 1 1 2 2 53 50 BATT LOW CE 35 49 9 6 15 1 34 31 16 19 13 10 LCD0 LCD14 COM0 COM3 KEY SCAN0 KEY SCAN3 KEY RET0 KEY RET3 51 INT VDD VDD S115 HOLD 24 25 XOUT XIN X101 75kHz IC...

Страница 8: ...8 8 ICF M410L 4 2 SCHEMATIC DIAGRAM IC B D See page 6 for Wavefoms See page 10 for IC Pin Function Description See page 10 for IC Block Diagrams ...

Страница 9: ...ND TP106 BEEP TP116 13V TP115 ED TP102 POWER TP103 MUTING TP104 MW SW TP105 FM AM LCD101 1 5 10 15 19 1 14 15 28 29 42 43 56 JW122 JW111 JW112 JW113 JW114 JW115 JW116 JW103 JW119 JW18 JW117 JW110 JW109 JW108 JW102 JW101 JW107 JW106 JW105 JW104 JW120 X101 T101 C123 C156 C153 W101 W102 1 681 634 11 11 KEY BOARD C119 R140 R137 R101 C122 C118 R136 R134 R141 R133 R132 R139 R131 R130 R129 R128 C117 R127...

Страница 10: ...clock Pin for connecting crystal resonator for system clock Regulater for PLL output LCD drive voltage output Pin for capacitor connection for LCD drive voltage Pin for capacitor connection for LCD drive voltage LCD drive voltage output LCD common signal output LCD common signal output LCD common signal output LCD common signal output LCD segment signal output Chip select emable input Hold input L...

Страница 11: ...5 3 228 693 01 CHASSIS 6 3 228 707 01 TERMINAL BATTERY 7 3 228 708 01 SPRING JOG 8 3 380 333 21 KNOB 9 A 3021 467 A MAIN BOARD COMPLETE 10 3 228 696 01 BATTERY COVER 11 3 370 475 01 SCREW NYLOCK B 3X6 12 3 228 692 01 CABINET REAR 13 3 228 709 01 PLATE CONTACT 14 3 228 704 01 ARM JOG 15 3 228 699 01 BUTTON KEY 16 3 228 703 01 KNOB JOG 17 3 228 695 01 SIDE PANEL R 18 3 228 698 01 BUTTON PRESET 19 3 ...

Страница 12: ...5 50V C113 1 115 156 11 CERAMIC CHIP 1uF 10V C114 1 115 156 11 CERAMIC CHIP 1uF 10V C115 1 164 156 11 CERAMIC CHIP 0 1uF 25V C116 1 115 416 11 CERAMIC CHIP 0 001uF 5 00 25V C117 1 164 156 11 CERAMIC CHIP 0 1uF 25V C118 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C119 1 164 156 11 CERAMIC CHIP 0 1uF 25V C120 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C121 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C123 1 124...

Страница 13: ...365 21 SWITCH TACTILE S105 1 762 365 21 SWITCH TACTILE S106 1 762 365 21 SWITCH TACTILE S107 1 762 196 21 SWITCH TACT STANDBY S108 1 762 365 21 SWITCH TACTILE S109 1 762 196 21 SWITCH TACT BAND S110 1 762 196 21 SWITCH TACT PRESET TUNING 2 S111 1 762 196 21 SWITCH TACT PRESET TUNING 1 S112 1 762 196 21 SWITCH TACT PRESET TUNING 3 S113 1 762 196 21 SWITCH TACT PRESET TUNING 5 S114 1 762 196 21 SWIT...

Страница 14: ...ANSISTOR 2SC3931 C TX Q3 8 729 402 32 TRANSISTOR 2SD1819A R TX Q4 8 729 800 71 TRANSISTOR 2SB815B6B7 TA Q5 8 729 029 15 TRANSISTOR DTC144TUA T106 Q7 8 729 029 15 TRANSISTOR DTC144TUA T106 Q8 8 729 800 71 TRANSISTOR 2SB815B6B7 TA Q9 8 729 029 15 TRANSISTOR DTC144TUA T106 RESISTOR R2 1 216 839 11 METAL CHIP 33K 5 1 16W R3 1 216 815 11 METAL CHIP 330 5 1 16W R4 1 216 845 11 METAL CHIP 100K 5 1 16W R5...

Страница 15: ...15 ICF M410L MEMO ...

Страница 16: ...STORY Clicking the version allows you to jump to the revised page Also clicking the version at the upper right on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 2001 05 New ...

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