Table of Contents
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CASSETTE RECEIVER
KRC-20SA/G
SERVICE MANUAL
Escutcheon
(B07-2124-02)
SRC
40Wx4
HIGH POWER
LOUD
Plastic cabinet assy
(A02-1486-13)
DC cord
(E30-4959-05)
Cassette lid
(A53-1638-13)
PWR
OFF
CLK
AUTO
AME
ADJ
T. CALL
Knob (ATT)
(K25-1388-03)
Antenna adaptor
(T90-0523-05)
© 2002-1 PRINTED IN JAPAN
B51-7881-00 ( N ) 1924
Panel assy
(A64-2519-02)
REW
FF
PR
OG
CRSC
KRC-20S
AUD
A. ADJ
Lever
(D10-3031-04)x2
Mounting hardware assy
(J21-9491-13)
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Table of Contents
Related Manuals for Kenwood KRC-20SA
Summary of Contents for Kenwood KRC-20SA
- Page 1 CASSETTE RECEIVER KRC-20SA/G SERVICE MANUAL © 2002-1 PRINTED IN JAPAN B51-7881-00 ( N ) 1924 Escutcheon Cassette lid Panel assy (B07-2124-02) (A53-1638-13) (A64-2519-02) 40Wx4 HIGH POWER CRSC AUTO T. CALL KRC-20S A. ADJ LOUD Knob (ATT) (K25-1388-03) Plastic cabinet assy...
- Page 2 IC4, Q151 (X14- ) POWER IC SP OUT B.U. OUT LF FRONT Lch AM BPF FM BPF RF GND LEVEL E-VOL. OUT RF FRONT Rch NC/MPX/ FM ANT MP IN CH ISO AMP AM ANT Q200,201 RF GND FM+B FM+B FM+B OUT LR REAR Lch...
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Page 3: Components Description
KRC-20SA/G COMPONENTS DESCRIPTION SWITCH UNIT (X16-1492-XX) Ref.No. Component Name Application/Function Operation/Condition/Compatibility LC75853NE LCD driver with key-matrix DTA114EK or UN2111 or Key-matrix permission SW Ready on key-matrix KRA102S SYNTHESIZER UNIT (X14-6852-71) Ref.No. Component Name Application/Function Operation/Condition/Compatibility LC72366-9592 System MI-COM. System control TDA7461ND E-VOL. - Page 4 KRC-20SA/G COMPONENTS DESCRIPTION Ref.No. Component Name Application/Function Operation/Condition/Compatibility DTC114YK or UN2214 or Q260 When Q260's base becomes Hi, Q261 is turned on. KRC107S Motor +B SW Works during TAPE mode. Q261 2SB1443 Q301 DTA144EK or UN2113 Changer reset SW When a base becomes Lo, Q301 is turned on.
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Page 5: Microcomputer's Terminal Description
KRC-20SA/G MICROCOMPUTER'S TERMINAL DESCRIPTION Terminal Description (IC1 : X14-6852-71) Pin No. Pin name Description Processing Operation Main clock resonator connection terminal TEST terminal 2 Connected to GND lines. L DATA L Data input from the LCD driver IC L DATA S... - Page 6 KRC-20SA/G MICROCOMPUTER'S TERMINAL DESCRIPTION Pin No. Pin name Description Processing Operation EQ MUTE Tape equalizer mute on/off output N.C. (Not used) FWD/REV FWD/REV mode detection input Lo : REV mode N.C. (Not used) Data input from the remote control REMO N.C.
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Page 7: Test Mode / Adjustment
KRC-20SA/G TEST MODE / ADJUSTMENT TEST MODE 1. How to enter the test mode 3. Audio adjustment • Reset the unit while holding the FM key and preset 6 key. • Set the volume level to -10dB (which is shown as "30" on •... - Page 8 PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) X16-1492-xx (J74-1298-02) X16-1492-xx (J74-1298-02) X16-1492-xx Ref. No. address Refer to the schematic diagram for the values of resistors and capacitors.
- Page 9 PC BOARD (FOIL SIDE VIEW) X14-6852-71 (J74-1317-12) W101 C600 10 9 W113 W112 R404 C400 R453 R452 D403 D409 R154 R351 D411 D370 D402 Q370 D371 W200 D401 W119 D350 D404 D400 Q350 D405 C350 R372 R405 C451 R451 R450 W115 R352 W122...
- Page 10 F1 (10A) SYNTHESIZER UNIT (X14-6852-71) 11 10 POWER IC WHT/BLK GRN/BLK GRY/BLK VIOL/BLK 52mH VIOL 8.2V 3.3K P CON FM+B BLU/WHT 1/2W Q201 ANT CON FRONT-END 3300u16 14.4V BLU/WHT AM+B R203 RF GND FM+B SW FM ANT R370 BACK-UP DETECTION 4.7K (MOMENTARY POWER DOWN DETECTION)
- Page 11 IC1 : LC75853NE D1-13,15 (X16-1492-7X) ∗ MODEL NAME UNIT No. D1-13,15 Q1 : DTA114EK or MA3062-M AUTO VOL- VOL+ UN2111 or KRC-20SA (E) 2-71 B30-1566-05 B30-1511-05 KRA102S KRC-20SG (E) 2-72 B30-1565-05 B30-2025-05 GND LINE B LINE T.UP AUDIO T.DOWN KEY-MATRIX...
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Page 12: Exploded View (Mechanism)
KRC-20SA/G EXPLODED VIEW (MECHANISM) Parts with the exploded numbers larger than 700 are not supplied. -
Page 13: Exploded View (Unit)
KRC-20SA/G EXPLODED VIEW (UNIT) (X14-) (X14-) (X14-) (X14-) (X14-) (X14-) M3x4 : N30-3004-46 φ 3x5 : N83-3005-46 (X14-) φ 3x10 (X14-) : N35-3010-46 (X14-) φ 3x8 : N80-3008-46 φ 3x20 : N83-3020-46 φ 2.6x6 : N86-2606-46 M3x8 : N30-3008-46 (X14-) -
Page 14: Exploded View (Panel)
KRC-20SA/G EXPLODED VIEW (PANEL) φ 2x6 : N80-2006-46 φ 1.5 : N29-0205-04 φ 2x8 (BLK) : N80-2008-45 (X16-) (X16-) (X16-) (X16-) (X16-) (X16-) (X16-) Parts with the exploded numbers larger than 700 are not supplied. -
Page 15: Parts List
PAN HEAD TAPTITE SCREW N29-0205-04 RETAINING RING (1.5) E39-0344-05 WIRING HARNESS N80-2008-45 PAN HEAD TAPTITE SCREW L33-1063-15 CHOKE COIL N30-3008-46 PAN HEAD MACHINE SCREW L40-4795-91 SMALL FIXED INDUCTOR (4.7UH,J) L33-1123-05 LINE FILTER COIL E8 : KRC-20SA E9 : KRC-20SG indicates safety critical components. - Page 16 MI-COM IC R206 RK73GB2A472J CHIP R 4.7K J 1/10W TDA7461ND ANALOGUE IC R207 RK73GB2A272J CHIP R 2.7K J 1/10W HD74HC27FP MOS-IC R250 RK73FB2B100J CHIP R J 1/8W TDA7384A ANALOGUE IC E8 : KRC-20SA E9 : KRC-20SG indicates safety critical components.
- Page 17 2SB1443 TRANSISTOR Q301 DTA144EK DIGITAL TRANSISTOR A10-4328-08 CHASISS CALKING ASSY Q301 UN2113 DIGITAL TRANSISTOR J26-4017-08 PRINTED WIRING BOARD ASSY Q320 2SA1037K TRANSISTOR J21-7778-08 MOUNTING HARDWARE Q350 2SB1277(Q,R) TRANSISTOR D10-4091-08 SLIDER E8 : KRC-20SA E9 : KRC-20SG indicates safety critical components.
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Page 18: Specifications
N19-2043-08 FLAT WASHER N19-2038-08 FLAT WASHER T31-0229-08 PLAYBACK HEAD KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. T42-1025-08 MOTOR ASSY E8 : KRC-20SA indicates safety critical components. E9 : KRC-20SG...