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CASSETTE RECEIVER
KRC-4902Y
QQ
3 7 63 1515 0
SERVICE MANUAL
Knob(VOL)
(K25-1395-03)
TE
L 13942296513
Knob(SRC)
(K24-3820-04)
Plastic cabinet assy
(A02-1486-13)
www
Lever
(D10-4589-04)
.
Panel assy
(A64-2540-02)
KRC-4902
LOUD
SCRL
SCAN
SRC
OFF
Knob(1-6)
(K25-1392-03)
DC cord
x
ao
u163
(E30-4792-05)
y
i
2 9
8
Cassette lid
(A53-1687-03)
45Wx4
B.S/RDM
REP
T.CALL
M.RDM
Q Q
3
6 7
1 3
1 5
Front glass
(B10-4129-01)
co
.
9 4
2 8
© 2002-1 PRINTED IN JAPAN
B51-7880-00 ( N ) 1089
MECHANISM EXTENSION CORD
W05-0477-00 (7P)
W05-0609-00 (10P)
Knob(FM,AM)
(K25-1393-03)
WIDE BAND
DISC
CLK
MENU
AUTO
AME
AUD
0 5
8
2 9
9 4
Knob(AUD)
(K24-3821-04)
Mounting hardware assy
(J21-9641-13)
m
Antenna adaptor
(T90-0523-05)
9 9
2 8
9 9
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Table of Contents
Related Manuals for Kenwood KRC-4902Y
Summary of Contents for Kenwood KRC-4902Y
- Page 1 CASSETTE RECEIVER KRC-4902Y 3 7 63 1515 0 SERVICE MANUAL © 2002-1 PRINTED IN JAPAN B51-7880-00 ( N ) 1089 MECHANISM EXTENSION CORD W05-0477-00 (7P) W05-0609-00 (10P) Knob(VOL) Panel assy Cassette lid Knob(FM,AM) (K25-1395-03) (A64-2540-02) (A53-1687-03) (K25-1393-03) WIDE BAND KRC-4902...
- Page 2 3 7 6 3 1 5 1 5 0 (X14) CD/MD FM : 213mV CHANGER ANT. CD L/R TUNER AM : 160mV 1200mV BU14V CD L/R SP OUT RF GND POWER IC FM ANT LEVEL AM ANT OUT LF FRONT Lch MP IN FM+B FM+B...
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Page 3: Components Description
KRC-4902Y COMPONENTS DESCRIPTION 3 7 63 1515 0 SYNTHESIZER UNIT (X14-6892-72) Ref.No. Function Operation SYSTEM µ-COM E-VOLUME POWER AMPLIFIER Speaker output POWER IC MUTE CONTROL LOGIC 3 input NOR gate x 3 EQUALIZER AMPLIFIER For full logical cassette mechanism control... -
Page 4: Microcomputer's Terminal Description
KRC-4902Y MICROCOMPUTER'S TERMINAL DESCRIPTION 3 7 63 1515 0 µ-COM (IC1 : X14-) Pin No. Pin name Description Processing Operation DSI control. PANEL Panel detection. "L": Panel exists. AVSS GND. L-RST LCD driver reset. L-CE LCD driver chip enable. AVREF1... - Page 5 KRC-4902Y MICROCOMPUTER'S TERMINAL DESCRIPTION 3 7 63 1515 0 Pin No. Pin name Description Processing Operation EN2-0 Power supply IC control. BEEP Buzzer. Power supply IC control. Power supply IC control. SW 5V P.ON 5V control. "H": OFF. "L": ON.
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Page 6: Test Mode / Adjustment
KRC-4902Y TEST MODE / ADJUSTMENT 3 7 63 1515 0 TEST MODE 1. How to enter the test mode 4. Audio adjustment • Reset the unit while holding the "FM" key and preset "6" • Enter the audio mode by pressing the "AUD" key or key. - Page 7 PC BOARD (COMPONENT SIDE VIEW) 3 7 6 3 1 5 1 5 0 SYNTHESIZER UNIT SWITCH UNIT X14-6892-72 (J74-1321-02) X16-1532-71 (74-1303-02) 13 11 R402 R408 R407 R403 R411 R405 R401 R410 R406 R409 R404 D404 D409 D410 C258 D401 D411 D403 D402...
- Page 8 PC BOARD (FOIL SIDE VIEW) 3 7 6 3 1 5 1 5 0 SWITCH UNIT SYNTHESIZER UNIT X16-1532-71 (74-1303-02) X14-6892-72 (J74-1321-02) C260 R254 8 12 R253 C259 R402 R407 R408 R403 R405 R411 R401 L-CLK R406 R410 R404 R409 Q223 R225 R226...
- Page 9 SYNTHESIZER UNIT (X14-6892-72) UPD780058GC426 3 7 6 3 1 5 1 5 0 : TDA7407D DC-IN/SP-OUT TDA7386 : TDA3682ST 1 2 3 4 5 6 7 9 10 11 12 13 14 15 16 17 18 : HD74HC27FP CH-IN : HA12221F IC10 LB1930M 5.0V...
- Page 10 L CE R156 1K R109 47K L DATA L u 1 6 3 R120 10K Q151 R155 10 R112 47K 5.0V R154 1K R113 47K PANEL 5V SW R122 10K R161 1K REMO R153 1K PANEL SW ESD GND KRC-4902Y (1/2)
- Page 11 TP21 0.01 1000P L-RES ILL-GND TP14 L-DATA L L-CE L-CLK L-DATA S TP15 KRC-4902Y (2/2) : LC75883E : RS-171 Q2,3 : DTA114EUA KEY ILLUMI- Q2,3 : 2SC4081 NATION SW D1-14,20-22 : B30-1605-05 CAUTION : For continued safety, replace safety critical components...
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Page 12: Exploded View (Mechanism)
KRC-4902Y EXPLODED VIEW (MECHANISM) 3 7 63 1515 0 L 13942296513 : N09-4193-08 M2x2.5 : N09-4194-08 M1.7x7 : N09-4195-08 : N09-4196-08 M2x2.2 : N09-4197-08 : N09-4198-08 M2x3 : N09-4199-08 M2x5 (BLK) : N09-4200-08 1.2x3 : N19-2087-08 1.6x3.2 : N19-2088-08 : N19-2135-08 1.6x3.2... -
Page 13: Exploded View (Unit)
KRC-4902Y EXPLODED VIEW (UNIT) 3 7 63 1515 0 M2.6x4 : N30-2604-46 M2.6x8 : N30-2608-46 φ 2x6 : N80-2006-46 φ 2x8 (BLK) : N80-2008-45 (X14-) φ 3x5 : N83-3005-46 φ 3x8 : N80-3008-46 φ 3x16 : N83-3016-46 φ 3x8 : N84-3008-46... -
Page 14: Parts List
KRC-4902Y PARTS LIST 3 7 63 1515 0 ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Dest Dest Ref. No. - Page 15 KRC-4902Y PARTS LIST 3 7 63 1515 0 ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. SYNTHESIZER UNIT (X14-6892-72) Teile ohne Parts No. werden nicht geliefert.
- Page 16 KRC-4902Y PARTS LIST 3 7 63 1515 0 ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. SYNTHESIZER UNIT (X14-6892-72) Teile ohne Parts No. werden nicht geliefert.
- Page 17 KRC-4902Y PARTS LIST 3 7 63 1515 0 ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. CASSETTE MECHANISM ASSY (D40-1150-05) Teile ohne Parts No. werden nicht geliefert.
- Page 18 KRC-4902Y PARTS LIST 3 7 63 1515 0 L 13942296513 u163...
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Page 19: Specifications
Installation Size (W) × (H) × (D) ..182 × 53 × 152 (mm) Frequency Range ......... 153kHz~281kHz Usable Sensitivity (S/N : 20dB) ....... 45µV Weight ..............1400g L 13942296513 KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. u163...