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CASSETTE RECEIVER
KRC-108S/188
SERVICE MANUAL
KRC-108S
Escutcheon
(B07-2181-02)
KRC-188
Escutcheon
(B07-2181-02)
Lever
(D10-3031-04)x2
Mounting hardware
(J21-9491-03)
Knob (EJECT)
Cassette lid
(K27-3554-03)
(A53-1675-03)
LCD
(B38-1024-05)
Knob (EJECT)
Cassette lid
(K27-3554-03)
(A53-1677-03)
LCD
(B38-1024-05)
Stay
(J54-0606-04)
© 1999-12 PRINTED IN JAPAN
B51-7576-00 ( N ) 1789
Knob (REW)
Knob (FF)
(K27-3556-04)
(K27-3555-04)
KRC-108S
Panel
(A64-1932-02)
Knob (REW)
Knob (FF)
(K27-3556-04)
(K27-3555-04)
KRC-188
Panel
(A64-1933-02)
Screw set
(N99-1632-05)
DC cord
(E30-4783-05) : KRC-108S
(E30-4784-05) : KRC-188
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Summary of Contents for Kenwood KRC-108S
- Page 1 (B07-2181-02) (B38-1024-05) (A64-1932-02) Knob (EJECT) Cassette lid Knob (REW) Knob (FF) KRC-188 (K27-3554-03) (A53-1677-03) (K27-3556-04) (K27-3555-04) KRC-188 Escutcheon Panel (B07-2181-02) (B38-1024-05) (A64-1933-02) Lever Stay Screw set (J54-0606-04) (N99-1632-05) (D10-3031-04)x2 Mounting hardware DC cord (J21-9491-03) (E30-4783-05) : KRC-108S (E30-4784-05) : KRC-188...
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Page 2: Table Of Contents
KRC-108S/188 CONTENTS BLOCK DIAGRAM ..................3 MICROCOMPUTER’S TERMINAL DECRIPTION ........4 ADJUSTMENT ..................... 6 PC BOARD ....................7 SCHEMATIC DIAGRAM ................11 EXPLODED VIEW ..................15 PARTS LIST ....................17 SPECIFICATIONS ..............BACK COVER... -
Page 3: Block Diagram
KRC-108S/188 BLOCK DIAGRAM... - Page 4 KRC-108S/188 MICROCOMPUTER’S TERMINAL DESCRIPTION Microcomputer (M38258MCD066FP : IC1 : X14) •Terminal description Pin No. Pin Name Signal Description Logic (NC) Not used. LCD power input. P67-65 KI0-2 Key return input. P64-61 KS0-3 Key scan output. SMETER Signal meter. Key scan output.
- Page 5 KRC-108S/188 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Signal Description Logic P_MUTE Power IC muting control. H: Power down. ANT_CON External antenna control. H: ON P_CON Power control output. H: ON ILLUM_ON Illumination control. H: ON (NC) Not used. 5V power control.
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Page 6: Adjustment
KRC-108S/188 ADJUSTMENT Set the controls and switches as follows. BALANCE : center position BASS : center position LOUD : OFF DOLBY NR : OFF FADER : center position TREBLE : center position OUTPUT RECEIVER ALIGNMENT TAPE ITEM ALIGN FOR SETTINGS... -
Page 7: Pc Board
PC BOARD (COMPONENT SIDE VIEW) X13-9660-10 (J74-0964-12) X14-6150-10/0-21 (J74-0960-12) W113 W112 BAND AUTO W103 W102 W105 C162 R351 W121 D370 D371 D350 Q350 C350 R372 R352 R353 W115 C150 C158 C155 Q address R156 R150 D352 C157 C352 C156 C152 R111 W107 W117... - Page 8 PC BOARD (FOIL SIDE VIEW) X14-6150-10/0-21 (J74-0960-12) X13-9660-10 (J74-0964-12) W113 W112 BAND AUTO W103 W102 W105 C162 R351 W121 D370 D371 D350 Q350 C350 R372 R352 W115 R353 C150 C158 C155 R156 R150 D352 C157 C352 C152 C156 Q address R111 W107 W117...
- Page 9 R370 4.7K 4.7uH D370 PREOUT Q200 Q203 FM+B MUTE SW DC CORD 0.01 AM+B (E30-4783-05) Q371 R371 Q370 KRC-108S(K) DET SW Q202 R373 R372 100K L3 4.7uH Q202,203 OSC GND AM+B SW OSC GND ANT-CON 100K OSC GND DRIVER SW...
- Page 10 Q450,451 : DTC143TK or UN2216 B LINE (X14-6150-xx) C450, D350, D370, R122, MODEL NAME UNIT No. R120 R121 R123 R350 R370 C202 371-373 KRC-108S 0-10 KRC-108S 0-11 KRC-188 0-21 RX270 0-01 RX270 0-02 Q153 W11,117, W84, LAMP UNIT No. 370,371 PL1.PL2...
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Page 11: Exploded View
KRC-108S/188 EXPLODED VIEW (MECHANISM) Parts with the exploded numbers larger than 700 are not supplied. - Page 12 KRC-108S/188 EXPLODED VIEW (UNIT) (X14-) M2.6x3 : N09-4348-05 M3x4 : N30-3004-46 (X14-) : N80-2006-46 (X14-) : N82-2006-46 (X14-) : N83-3005-46 3x10 : N64-3010-46 : N80-3008-46 3x20 : N83-3020-46 (X14-) 2.6x6 : N86-2606-46 (X14-6150-xx) (X13-9660-10) : KRC-188 ONLY Parts with the exploded numbers larger than 700 are not supplied.
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Page 13: Parts List
PIN JACK R1 -4 RK73EB2B331J CHIP R J 1/8W SYTHESIZER UNIT (X14-6150-10/0-21) E39-0344-05 WIRING HARNESS 2D ∗ A33-0621-12 REFLECTOR L33-1063-15 CHOKE COIL ∗ B38-1024-05 L40-4795-91 SMALL FIXED INDUCTOR(4.7UH,J) LIQUID CRYSTAL K : KRC-108S M1 : KRC-188 indicates safety critical components. -
Page 14: Parts List
CHIP R J 1/16W ∗ PST9135NR ANALOGUE IC R156 RK73GB1J154J CHIP R 150K J 1/16W R157 RK73GB1J101J CHIP R J 1/16W 2SC2412K TRANSISTOR R158 RK73FB2A333J CHIP R J 1/10W 2SD601A TRANSISTOR K : KRC-108S M1 : KRC-188 indicates safety critical components. - Page 15 Q450,451 DTC143TK DIGITAL TRANSISTOR Q450,451 UN2216 DIGITAL TRANSISTOR PTH9C42BD471Q POSITIVE RESISTOR X86-3160-11 FRONT-END UNIT CASSETTE MECHANISM ASSY (D40-1137-05) A10-4328-08 CHASISS CALKING ASSY J26-4017-08 PRINTED WIRING BOARD ASSY J21-7778-08 MOUNTING HARDWARE K : KRC-108S M1 : KRC-188 indicates safety critical components.
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Page 16: Specifications
Weight ..................3.1lbs(1.4kg) (H) ................ 53 (mm) (D) ..............155 (mm) Weight....................1400g KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. KENWOOD CORPORATION 14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo 150-8501 Japan KENWOOD SERVICE CORPORATION KENWOOD ELECTRONICS ITALIA S.p.A.