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CASSETTE RECEIVER
KRC-2902YA/G
SERVICE MANUAL
Escutcheon
(B07-2124-02)
SRC
45Wx4
HIGH POWER
LOUD
Plastic cabinet assy
(A02-1486-13)
DC cord
(E30-4790-05)
Cassette lid
(A53-1638-13)
PWR
OFF
CLK
AUTO
AME
T. CALL
Knob (ATT)
(K25-1388-03)
Antenna adaptor
(T90-0523-05)
© 2002-1 PRINTED IN JAPAN
B51-7882-00 ( N ) 1089
Panel assy
(A64-2520-02)
REW
FF
PR
OG
WIDE BAND
KRC-2902
AUD
MENU
Lever
(D10-3031-04)x2
Mounting hardware assy
(J21-9491-13)
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Table of Contents
Related Manuals for Kenwood KRC-2902YA
Summary of Contents for Kenwood KRC-2902YA
- Page 1 CASSETTE RECEIVER KRC-2902YA/G SERVICE MANUAL © 2002-1 PRINTED IN JAPAN B51-7882-00 ( N ) 1089 Escutcheon Cassette lid Panel assy (B07-2124-02) (A53-1638-13) (A64-2520-02) 45Wx4 HIGH POWER AUTO WIDE BAND T. CALL KRC-2902 MENU 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-2902YA/G COMPONENTS DESCRIPTION SYNTHESIZER UNIT (X14-6872-73) Ref.No. Function Operation SYSTEM µ-COM Controls the unit. E -VOLUME Controls the volume and selects source. M UTE LOGIC Controls the mute output. POWER AMPLIFIER For the speaker output. EQUALIZER AMPLIFIER For the cassette tape's signal. -
Page 4: Microcomputer's Terminal Description
KRC-2902YA/G MICROCOMPUTER'S TERMINAL DESCRIPTION µ-COM (IC1 : X14-) Pin No. Pin name Description Processing Operation PANEL Panel detection. "L" : Panel exists. L CE LCD driver chip enable. L RES LCD driver reset. AVSS GND. R DATA RDS data. R QUAL RDS receiving. - Page 5 KRC-2902YA/G MICROCOMPUTER'S TERMINAL DESCRIPTION Pin No. Pin name Description Processing Operation AMP STBY Power amplifier stand-by. BEEP Buzzer signal output. 51,52 P.CONT Power control SW. ACC DET ACC detection. B.U.DET Back-up detection. P.ON Power SW. ILLUMI Illumination SW. FWD/REV Cassette mechanism FWD/REV detection.
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Page 6: Test Mode
KRC-2902YA/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 the •... - Page 7 PC BOARD (FOIL SIDE VIEW) (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SYNTHESIZER UNIT SWITCH UNIT X14-6872-73 (J74-1319-02) X16-1512-7x (J74-1300-02) X16-1512-7x (J74-1300-02) W103 C600 C601 3 4 8 12 11 13 6 10 9 W159 W158 C400 C402 R452 R453 C401 D409 W101 R154...
- Page 8 FF/REW EQUALIZER AMPLIFIER 5.0V Indicates safety critical MOTOR VDD 0 components. To reduce the 5.0V KRC-2902YA/G (1/2) AVREFO risk of electric shock, leakage- R106 S METER current or resistance measure- 2.2K 0V or 5.0V PHONE ments shall be carried out...
- Page 9 R7 56K TEST 3.3V 3.3V C1 1000P ESD-GND 1.7V T.UP 5.0V DATA L 2SA1037K AUDIO T.DOWN DATA S KRA102S KRC104S KRC-2902YA/G (2/2) : LC75883E (X16-1512-7X) : DTA114EK MODEL NAME UNIT No. D1-13,15 ∗ KRC-2902YA 2-70 B30-1566-05 B30-1511-05 B38-1099-05 LA3161 D1-13,15 ∗...
- Page 10 KRC-2902YA/G EXPLODED VIEW (MECHANISM) Parts with the exploded numbers larger than 700 are not supplied.
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Page 11: Exploded View (Unit)
KRC-2902YA/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 12: Exploded View (Panel)
KRC-2902YA/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 13: Parts List
N80-2006-46 PAN HEAD TAPTITE SCREW E58-0863-15 RECTANGULAR RECEPTACLE N29-0205-04 RETAINING RING (1.5) E58-0888-05 RECTANGULAR RECEPTACLE N80-2008-45 PAN HEAD TAPTITE SCREW E23-0745-05 TERMINAL N30-3008-46 PAN HEAD MACHINE SCREW E39-0344-05 WIRING HARNESS Z1 : KRC-2902YA Z2 : KRC-2902YG indicates safety critical components. - Page 14 J 1/10W D370,371 ERA15-01 DIODE R154 RK73GB2A751J CHIP R J 1/10W D380 MA4047-M ZENER DIODE R155 RK73GB2A431J CHIP R J 1/10W R156 RK73GB2A184J CHIP R 180K J 1/10W UPD780058GC425 MI-COM IC indicates safety critical components. Z1 : KRC-2902YA Z2 : KRC-2902YG...
- Page 15 SUB CHASSIS CALKING ASSY Q351 2SA1037K TRANSISTOR J26-4018-08 PRINTED WIRING BOARD ASSY Q352 DTA124EK DIGITAL TRANSISTOR G01-2826-08 TORSION COIL SPRING Q352 KRA103S DIGITAL TRANSISTOR Q352 UN2112 DIGITAL TRANSISTOR D10-4094-08 SLIDER indicates safety critical components. Z1 : KRC-2902YA Z2 : KRC-2902YG...
- Page 16 SCREW N09-4191-08 SCREW N09-4192-08 SCREW N09-4058-08 SCREW N09-4109-08 SCREW N19-2082-08 FLAT WASHER N19-2083-08 FLAT WASHER N19-2084-08 FLAT WASHER N19-2043-08 FLAT WASHER N19-2038-08 FLAT WASHER T31-0229-08 PLAYBACK HEAD T42-1025-08 MOTOR ASSY indicates safety critical components. Z1 : KRC-2902YA Z2 : KRC-2902YG...
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Page 17: Specifications
Installation Size (W) × (H) × (D) ..182 × 53 × 158 (mm) LW Section Frequency Range ......... 153kHz~281kHz Weight ..............1300g Usable Sensitivity (S/N : 20dB) ....... 45µV KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.