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Kenwood KRC-391 Service Manual

Cassette receiver
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See also: Service Manual , Instruction Manual
CASSETTE RECEIVER
KRC-391/391Y
KRC-36/36Y/30Y
SERVICE MANUAL
KRC-391
Knob(VOL)
(K25-1395-03)
SRC
OFF
Knob(SRC)
(K24-3820-04)
∗ Refer to the PARTS LIST
Plastic cabinet assy
(A02-1486-13)
Lever
(D10-4589-04)
∗ Panel assy
Cassette lid
(A64-2538-02)
(A53-1687-03)
KRC-391
LOUD
SCRL
SCAN
B.S/RDM
REP
Knob(1-6)
(K25-1392-03)
DC cord
(E30-4792-05)
©
2001-10 PRINTED IN JAPAN
B51-7853-00 (S) 1929
MECHANISM EXTENSION CORD
W05-0477-00 (7P)
W05-0609-00 (10P)
45Wx4
DISC
T.CALL
M.RDM
CLK
MENU TI
VOL ADJ
∗ Front glass
(B10-4127-01)
Mounting hardware assy
(J21-9641-13)
Antenna adaptor
(T90-0523-05)
Knob(FM,AM)
(K25-1393-03)
AUD
Knob(AUD)
(K24-3821-04)

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Summary of Contents for Kenwood KRC-391

  • Page 1 CASSETTE RECEIVER KRC-391/391Y KRC-36/36Y/30Y © SERVICE MANUAL 2001-10 PRINTED IN JAPAN B51-7853-00 (S) 1929 MECHANISM EXTENSION CORD W05-0477-00 (7P) W05-0609-00 (10P) KRC-391 ∗ Panel assy Knob(VOL) Cassette lid Knob(FM,AM) (K25-1395-03) (A64-2538-02) (A53-1687-03) (K25-1393-03) KRC-391 45Wx4 DISC LOUD SCRL SCAN B.S/RDM T.CALL...
  • Page 2 (X14) CD/MD FM : 213mV CHANGER ANT. CD L/R TUNER AM : 160mV 1200mV BU14V SP OUT RF GND CD L/R POWER IC FM ANT LEVEL AM ANT OUT LF FRONT Lch MP IN FM+B FM+B AM+B AM+B AUDIO 8V QUAL AM LO/DX SW5V...

  • Page 3: Component Description

    KRC-391/Y,36/Y,30Y COMPONENT DESCRIPTION SYNTHESIZER UNIT(X14-6892/9002-XX) REF.No. FUNCTION OPERATION SYSTEM µ-COM E-VOLUME POWER AMPLIFIER Speaker output RDS DECODER POWER IC MUTE CONTROL LOGIC 3 input NOR gate x 3 EQUALIZER AMPLIFIER For full logical cassette mechanism control IC10 SUB MOTOR DRIVER...

  • Page 4: Microcomputer's Terminal Description

    KRC-391/Y,36/Y,30Y MICROCOMPUTER'S TERMINAL DESCRIPTION (X14-) IC1: µ-COM PORT No. PORT NAME I/O FUNCTION OPERATING CONDITION DSI control. PANEL Panel detection. "L": Panel exists. AVSS GND. L-RST LCD driver reset. L-CE LCD driver chip enable. AVREF1 Reference voltage PLL-DATA I/O Front-end communication data.

  • Page 5: Test Mode / Adjustment

    KRC-391/Y,36/Y,30Y KRC-391/Y,36/Y,30Y MICROCOMPUTER'S TERMINAL DESCRIPTION TEST MODE / ADJUSTMENT PORT No. PORT NAME I/O FUNCTION OPERATING CONDITION TESTMODE FWD/REV Cassette tape running direction detection. "H": FWD "L": REV. 1. How to enter the test mode 4. Audio adjustment SUB+ Sub motor control.
  • Page 6 PGND SGND 2SC4081 UNIT MODEL NAME C308 R111 R112 R113 R114 R118 R146 Q301 7.6V 5.0V OUT2 KRC-391 (E) 5.0V KRC-391Y (E) 2-70 X86-3512-70 UPD780058GC418 7.6V KRC-36 (E) OUT1 7.7V KRC-36Y (E) Q501 KRC-4902Y (E) 2-72 X86-3512-72 UPD780058GC426 KRC-30Y (E)
  • Page 7 DC voltages are as measured with a high impedance voltmeter. Values may Q151 R111 47K R112 47K 5.0V R154 1K PANEL R113 47K R114 47K vary slightly due to variations between individual instruments or/and units. 5V SW R122 10K R161 1K REMO R153 1K PANEL SW ESD GND KRC-391/Y,36/Y,30Y...
  • Page 8 L-DATA S Q2,3 TP15 KEY ILLUMI- NATION SW 2.2K 2.2K : LC75883E R14, D13,14 MODEL NAME UNIT No. : RS-171 KRC-391 (E) X16-1722-70 B30-1564-05 : DTA114EUA KRC-391Y (E) X16-1532-70 NO B30-1564-05 Q2,3 : 2SC4081 KRC-36 (E) X16-1722-70 B30-1564-05 KRC-36Y (E)

This manual is also suitable for:

Krc-30yKrc-36Krc-391yKrc-36y