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M&T CASSETTE RECEIVER
KRC-709/779R/RY/889
SERVICE MANUAL
The CASSETTE MECHANISM OPERATION DESCRIPTION is the same model D40-1122-05.
Please refer to the service manual for model D40-1122-05(B51-7452-00).
KRC-709
Front glass
(B10-3237-01)
Escutcheon assy
(B07-3007-03)
KRC-779R/RY
Front glass
(B10-3242-01)
Escutcheon assy
(B07-3007-03)
KRC-889
Front glass
(B10-3239-01)
Escutcheon assy
(B07-3007-03)
KRC-779R/RY
DC cord
(E30-4942-05)
Screw set
(N99-1704-05)
DC cord
KRC-709:(E30-4940-05)
KRC-889:(E30-4939-05)
KRC-709,889
KRC-709
47Wx4
DOLBY B NR
LOUD
B NR
SCAN
B.S/RDM
KRC-779R
K3i
47Wx4
DOLBY B NR
LOUD
B NR
SCAN
B.S/RDM
KRC-889
47Wx4
DOLBY B NR
LOUD
B NR
SCAN
B.S/RDM
Remote com. assy
(A70-0886-15)
MASK-key
Plastic cabinet assy
Lever
(D10-4562-04)x2
(A02-1497-03)
Remote com. assy
(A70-0883-05)
SIZE AAA
BATTERY
(Not supplied)
RC-500
PROG
AUD
REP
MTL/M.RDM
AUTO
DISP
AME
NAME.S
PROG/PTY
AUD
EX
REP
MTL/M.RDM
TI
DISP
VOL ADJ
NAME.S
PROG
AUD
EX
REP
MTL/M.RDM
AUTO
DISP
AME
NAME.S
Antenna adaptor
(T90-0523-05)
Torsion coil spring
(G01-2924-04)
Escutcheon assy
Bracket L
(B07-3010-02)
(J19-5051-03)
Bracket R
(J19-5052-03)
2001-2 PRINTED IN KOREA
C
B51-7749-00 (K) 3395
PWR OFF
MENU
CLK
Panel assy
(A64-2130-02)
ANG
DAB
PWR OFF
MENU
CLK
Panel assy
(A64-2134-02)
ANG
DAB
PWR OFF
MENU
CLK
Panel assy
(A64-2132-02)
ANG
DAB
Mounting hardware assy
(J21-9716-03)
Screw set
Stay
(J54-0606-04)
(N99-1652-05)
40%
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Table of Contents
Related Manuals for Kenwood KRC-709
Summary of Contents for Kenwood KRC-709
- Page 1 M&T CASSETTE RECEIVER KRC-709/779R/RY/889 SERVICE MANUAL 2001-2 PRINTED IN KOREA B51-7749-00 (K) 3395 The CASSETTE MECHANISM OPERATION DESCRIPTION is the same model D40-1122-05. Please refer to the service manual for model D40-1122-05(B51-7452-00). KRC-709 KRC-709 PROG PWR OFF MENU Front glass...
- Page 2 B.U.5V RESET X13-996/999 X13-995/998 X13-994/997 SYSTEM u-COM LCD TYPE V-ILL TYPE FL(GRADATED) TYPE PANEL5V PANEL5V SPEANA REMO REMO REMO PANEL5V PANEL PANEL G/R SW MATRIX U-COM MATRIX U-COM G/R SW G/R SW MATRIX DRIVER RESET RESET RESET DRIVER KRC-709,779R/RY,889 VFD(GRADATED)
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Page 3: Component Description
KRC-709,779R/RY,889 COMPONENT DESCRIPTION (X13-9960-10) (X13-9992-73) Component Purpose • Function Operation • Conditions • Compatibility LCD Driver with Key Matrix Remote Control IC Key Detection SW Q2 starts key scan in M&T. Lights key illumination in Red when the base of Q3 is ON. -
Page 4: Microcomputer's Terminal Description
KRC-709,779R/RY,889 MICROCOMPUTER'S TERMINAL DESCRIPTION UPD703033GC050 (IC1: X14) SYSTEM MICROCOMPUTER Name Purpose Operation Description AM+B AM power supply terminal. During AM operation: H. During FM operation: H. FM+B FM power supply terminal. Last FM with RDS model: H During FM seek or AM search: L. - Page 5 KRC-709,779R/RY,889 MICROCOMPUTER'S TERMINAL DESCRIPTION UPD703033GC050 (IC1: X14) SYSTEM MICROCOMPUTER Name Purpose Operation Description Main clock connection terminal. Grounding terminal. Positive power supply terminal. CLKOUT Internal System Clock output. No connection. Cassette mechanism main motor When the motor is running: H.
- Page 6 KRC-709,779R/RY,889 MICROCOMPUTER'S TERMINAL DESCRIPTION UPD703033GC050 (IC1: X14) SYSTEM MICROCOMPUTER Name Purpose Operation Description F-REEL Cassette mechanism reel pulse input (FWD). Vth = 2.5 V. No connection. Connected to GND. SRM-DET SRM mechanism detection. SRM mechanism detected: L. NOISE FM noise detection terminal.
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Page 7: Test Mode
KRC-709,779R/RY,889 TEST MODE M&T-SRT 2001 Model Test Mode 7. Audio-related specifications • A short press of the Q key initiates the audio adjustment 1. How to enter the test mode mode. • Pressing the ✽ key on the remote initiates the audio •... - Page 8 KRC-709,779R/RY,889 TEST MODE 10. Special display when the display is All ON Security-related information Pressing the Preset keys while the power is All OFF dis- • Forced Power ON mode (All models) plays the following information. Even when the security (Mask key) is approved, reset-...
- Page 9 KRC-709,779R/RY,889 TEST MODE • Method of writing the Mask key while the EEP- ROM is in the initial status 1. Enter the test mode. (See 1 How to enter the test mode) 2. Press the CLK key to enter the Mask key registration mode.
- Page 10 KRC-709,779R/RY,889 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 TUNER OUTPUT ALIGNMENT ITEM INPUT SETTINGS (RECEIVER) ALIGN FOR FIG. SETTINGS POINTS SETTINGS CASSETTE DECK SECTION...
- Page 11 PC BOARD (Component side view) X13-9960-10 (J74-1138-12) X13-9992-73 (J74-1221-12) X14-644x-xx (J74-1140-12) X14-6452-73 (J74-1215-12) R136 R134 R131 STBY C173 C131 C112 C132 I G O C154 R107 R100 C174 C111 C169 R167 R315 W103 R168 R112 R135 IC10 C135 R162 C157 R161 C137 R309...
- Page 12 PC BOARD (Foil side view) X13-9960-10 (J74-1138-12) X13-9992-73 (J74-1221-12) X14-644x-xx (J74-1140-12) X14-6452-73 (J74-1215-12) R136 R134 R131 STBY Q4 Q71 C173 C131 C112 C132 C154 O G I R107 C174 R100 C111 C169 R167 R315 R168 W103 R112 R135 R162 C135 IC10 C157 C137...
- Page 13 PC BOARD Component side view X87-3022-71/3032-73 (J74-1148-12) DOLBY L DOLBY R DOLBY C23 C24 Foil side view X87-3022-71/3032-73 (J74-1148-12) DOLBY DOLBY R DOLBY L Refer to the schematic diagram for the value of resistors and capacitors.
- Page 14 GRN/BLK GRY/BLK VIOL/BLK VIOL PNK/BLK EXT. CONT. P. CON BLU/WHT TEL MUTE ORG/WHT DC CORD DC CORD (E30-4939) (E30-4940) KRC-889 KRC-709 DC CORD (E30-4942) KRC-779R/RY/V879R/RY (X87-30XX-XX) (X87-30XX-XX) (X87-30XX-XX) MODEL UNIT NAME IC1 : CXA2560Q KRC-709 KRC-889 Q1 : DTC124EK 22-71...
- Page 15 PRE OUT FRONT REAR DC IN (X14-64XX-XX) 1.45V CH CN J3 TOP VIEW 14.4V 7.5V 0V-4.1V 7.5V 1.25V REQ H D GND CH CON POWER IC MUTE 7.5V 8.9V 1.37V 1.37V 7.5V A GND 3300u16 14.4V C39 0.047 C35 0.047 7.5V REQ C ∗...
- Page 16 GND LINE CAS/SRM B LINE ∗ DEMODULATOR F REEL 5.0V 0.6V 0 or 5.0V C256 C256 (X16-118X-XX) W104 MODEL UNIT NAME KRC-709 IC15 KRC-889 0-10 KRC-779RY KRC-V879RY KRC-779R 2-72 5.0V KRC-V879R ∗ (X16-118X-XX) D GMD N.C. S.GND R377 ILL +B...
- Page 17 5.1V LCD DRIVER C3 0.1 VLCD2 3.4V 1.2K C11 0.01 C2 0.1 VLCD3 1.7V KRC-709/779R/RY/889 (2/2) VLCD4 C1 680P TEST : LC75808W CAUTION: For continued safety, replace safety critical components only with MODEL NAME UNIT No R1 43K : RS-171 manufacturer's recommended parts (refer to parts list).
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Page 18: Exploded View(Mechanism)
KRC-709,779R/RY,889 EXPLODED VIEW(MECHANISM) KRC-709,889,779R/RY Parts with exploded numbers larger than 700 are not supplied. -
Page 19: Exploded View(Unit)
KRC-709,779R/RY,889 EXPLODED VIEW(UNIT) ∗ ∗ ∗ ∗ ∗ PFPC1 ∗ ∗ ∗ CME1 SIZE AAA ∗ BATTERY (Not supplied) ∗ (X87-3032-71) (X87-3032-73) (X14) (X16) PME1 (X16) FPC2 (X14-644X-XX) (X14-6452-73) (X13-9960-10) (X13-9992-73) (X13) ∗ Depends on the model. Refer to the parts list. -
Page 20: Parts List
CONDUCTIVE RUBBER N29-0522-05 RETAINING RING 1C ✻ E30-4939-05 DC CORD N29-0523-05 RETAINING RING E: Europe K: North America M: Other Areas K : KRC-709 M2 : KRC-889 indicates safety critical components. W: Without Europe E5 : KRC-779R E7 : KRC-779RY... - Page 21 CC73GCH1H100D CHIP C 10PF E5E7 DTA114EUA DIGITAL TRANSISTOR C224 CC73GCH1H331J CHIP C 330PF E5E7 E: Europe K: North America M: Other Areas K : KRC-709 M2 : KRC-889 indicates safety critical components. W: Without Europe E5 : KRC-779R E7 : KRC-779RY...
- Page 22 1/16W R72 -76 RK73EB2B472J CHIP R 4.7K 1/8W R217 RK73GB1J473J CHIP R 1/16W E: Europe K: North America M: Other Areas K : KRC-709 M2 : KRC-889 indicates safety critical components. W: Without Europe E5 : KRC-779R E7 : KRC-779RY...
- Page 23 DIODE DTC114YK DIGITAL TRANSISTOR D11 -18 AM01Z DIODE 2SB1443 TRANSISTOR DTC114YK DIGITAL TRANSISTOR E: Europe K: North America M: Other Areas K : KRC-709 M2 : KRC-889 indicates safety critical components. W: Without Europe E5 : KRC-779R E7 : KRC-779RY...
- Page 24 DIGITAL TRANSISTOR T42-1002-08 MOTOR ASSY (MAIN) T42-1001-08 MOTOR ASSY (SUB A) T31-0226-08 PLAYBACK HEAD E: Europe K: North America M: Other Areas K : KRC-709 M2 : KRC-889 W: Without Europe indicates safety critical components. E5 : KRC-779R E7 : KRC-779RY...
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Page 25: Specifications
KRC-709,779R/RY,889 SPECIFICATIONS KRC-709 KRC-779R,RY Frequency Range 87.9MHz-107.9MHz Frequency Range(MHz) 87.5kHz~108.0kHz (Frequency step) (200kHz) (Frequency step) (50kHz) Channel Space Selection 50k/200kHz Usable Sensitivity 0.7µV/75Ω Usable Sensitivity 9.3dBf (S/N 26dB) S/N 30dB (0.8µV/75Ω) Quieting Sensitivity 1.6µV/75Ω Quieting Sensitivity 15.2dBf (S/N 46dB) S/N 50dB (1.6µV/75Ω) - Page 26 53(mm) 155(mm) Weight 1.7kg KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. Manufacture under license from Dolby Laboratories. KENWOOD CORPORATION "Dolby" and the double-D symbol are trademarks of Dolby Laboratories.