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Instruction Manual
CASSETTE RECEIVER
KRC-765
KRC-691/691Y
SERVICE MANUAL
KRC-691
Knob(SRC)
Knob(VOL)
(K25-1414-03)
(K25-1410-03)
OFF
SRC
LOUD
Knob(ATT)
(K25-1411-03)
∗ Refer to the PARTS LIST
DC cord
(E30-4940-05)
Lever
Remote controller assy
(D10-4589-04)
RC-410 (A70-2025-05)
: KRC-765 only
Knob(FM,AM)
(K25-1412-03)
DAB
KRC-691
PROG/PTY
MENU
DOLBY B NR
B NR
SCAN
AUD
Knob(1-6)
(K25-1409-03)
DC cord
(E30-4944-05)
Screw set
(N99-1719-05)
: KRC-765 only
©
2001-12 PRINTED IN JAPAN
B51-7878-00 (S) 2177
MECHANISM EXTENSION CORD
∗ Panel assy
(A64-2614-02)
B.S/RDM
REP
MTL/M.RDM
DISP
NAME
∗ Front glass
(B10-4192-01)
Plastic cabinet assy
(A02-1486-13)
Screw set
(N99-1656-05)
W05-0477-00 (7P)
W05-0609-00 (10P)
47Wx4
TI
Mounting hardware assy
(J21-9716-03)
Escutcheon
(B07-3055-05)
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Table of Contents
Related Manuals for Kenwood KRC-765
Summary of Contents for Kenwood KRC-765
- Page 1 ∗ Refer to the PARTS LIST DC cord DC cord Plastic cabinet assy Mounting hardware assy (E30-4940-05) (E30-4944-05) (A02-1486-13) (J21-9716-03) Lever Remote controller assy Screw set Screw set Escutcheon (D10-4589-04) RC-410 (A70-2025-05) (N99-1719-05) (N99-1656-05) (B07-3055-05) : KRC-765 only : KRC-765 only...
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Page 2: Block Diagram
KRC-765/691/691Y BLOCK DIAGRAM ANT. A 8V SW 5V TUNER E TYPE K TYPE TAPE 1800mV 1800mV FM+B FM : 1372mV 1800mV 460mV (K TYPE) 251mV (E TYPE) 855mV 600mV B.U. 5V 3600mV 3600mV AM+B Q1-4 MUTE 1.8V AUDIO DRIVER AM : 230mV... -
Page 3: Component Description
KRC-765/691/691Y COMPONENT DESCRIPTION SYNTHESIZER UNIT (X14-68XX-XX) Component Purpose • Function Operation • Conditions • Compatibility SYSTEM µ-COM E-VOL, N.C. NPX Mute logic circuit 4 input NOR gate x 4 Power IC RDS Decoder Reset IC "L" detection voltage: 3.0 V or less... -
Page 4: Microcomputer's Terminal Description
KRC-765/691/691Y MICROCOMPUTER'S TERMINAL DESCRIPTION IC1(SYNTHESIZE UNIT : X14-68XX-XX) Pin No. Pin Name Description Processing Operation TYPE 1 Destination type selection port TYPE 2 Destination type selection port F/E IFC OUT input terminal H: Station exists Vth: 2.5V AVSS A/D,D/A converter ground connection terminal Connected to GND lines. - Page 5 KRC-765/691/691Y MICROCOMPUTER'S TERMINAL DESCRIPTION Pin No. Pin Name Description Processing Operation P-CON Power control output H: Power ON L: Power OFF CH-RECH Request output to changers L: Request CH-RST Reset output to changers L: Normally CH-MUTE Mute request from changers...
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Page 6: Test Mode
KRC-765/691/691Y TEST MODE 1. How to enter the test mode • Track jump takes place to the following track when the Track up key is pressed. • Reset the unit while holding preset 1 key and preset 3 No. 9 → No. 15 → No. 10 → No. 11 → No. 12 → No. 13 key. - Page 7 KRC-765/691/691Y TEST MODE 10. Special display when the display is All ON 2. Enter the security registration mode by pressing the CLK key. If the PRESET key is pressed while all displays are turned 3. Enter the CODE by pressing the Track up/down and AM/ on by ALL OFF, the following display appears.
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Page 8: Panel Front
KRC-765/691/691Y ADJUSTMENT BALANCE/FADER/BASS/MID/TREBLE : CENTER T.ADV/METAL/DOLBY NR : OFF INPUT OUTPUT ALIGNMENT ITEM ALIGN FOR FIG. SETTINGS SETTINGS POINTS Adjust so that output Head azimuth TCC-153 level in playing FWD AZIMUTH SP OUT screw 10kHz and REV becomes (FWD/REV) maximum each. -
Page 9: Switch Unit
PC BOARD (Component Side View) PC BOARD (Foil Side View) SWITCH UNIT DAUGHTER UNIT DAUGHTER UNIT SWITCH UNIT SWITCH UNIT SWITCH UNIT X16-1640-10/1662-70 (J74-1314-02) X89-2510-10/2522-70 (J74-1325-02) X89-2510-10/2522-70 (J74-1325-02) X16-1640-10/1662-70 (J74-1314-02) (X16-1640-10/1662-70) (X16-1640-10/1662-70) REMO L-CLK L-CE L-INH Refer to the schematic diagram for the values of resistors and capacitors. -
Page 10: Pc Board (Component Side View)
PC BOARD (Component Side View) SYNTHESIZER UNIT PRE OUT FRONT REAR SYNTHESIZER UNIT X14-6830-20/6832-71/6842-70 (J74-1324-02/1386-02) (X14-6830-20/6832-71/6842-70) L1/J1 R141 R246 R107 R111 DATA IC11 S-MTR C143 R165 C148 C141 R241 R256 R164 C147 R240 C144 C145 R163 R239 TEST 12MHz R237 R236 R235 R228... - Page 11 PC BOARD (Foil Side View) SYNTHESIZER UNIT PRE OUT REAR FRONT X14-6830-20/6832-71/6842-70 SYNTHESIZER UNIT (J74-1324-02/1386-02) (X14-6830-20/6832-71/6842-70) L1/J1 R248 C143 R245 R263 R243 R253 R262 R238 R209 R166 R210 R168 R247 R167 R222 R169 R226 C165 C166 R171 C154 4.332MHz C121 R217 C122 R137...
- Page 12 C131 R62 470 D/A DATA/NC +10.5V 0.01 L-DATAS R63 470 L-INH/L-RST D/A CLK/NC 5 REMO FLIP DET 4 EJECT 3 D/A CLK/NC KRC-765/691/691Y (1/2) EJECT ILL FLIP DET (X14-68XX-XX) ESD-G 1 UNIT MODEL NAME R201 R202 KRC-765 30-20 X86-3240-11 100K...
- Page 13 VLCD2 3.4V C2 0.1 VLCD3 1.7V VOL- VLCD4 C1 680P TEST R1 43K P.CON TC74HC02AF DC CORD (E30-4944) : KRC-691Y (E30-4958) : KRC-691 KRC-765/691/691Y (2/2) LB1930M DTC114YUA UN5214 2SD1760 2SB1277 2SC4081 DTA114EUA DAN202U KTA1046 DAP202U UN5212 DTC143TUA UN5216 2SB1443 DTA124EUA...
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Page 14: Exploded View (Mechanism)
KRC-765/691/691Y KRC-765/691/691Y EXPLODED VIEW (MECHANISM) EXPLODED VIEW (UNIT) (X89-) (X14-) (X16-) : 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 M2.6x3 : N38-2630-46 M2x5 (BLK) : N09-4200-08 : N80-2005-46 1.2x3 : N19-2087-08 1.6x3.2... -
Page 15: Parts List
ELECTRO 220UF 10WV ∗ H54-2297-03 ITEM CARTON CASE C61-68 CK73GB1E473K CHIP C 0.047UF K ∗ H54-2300-03 ITEM CARTON CASE C61-68 CK73GB1H473K CHIP C 0.047UF K CK73GB1H103K CHIP C 0.010UF K M: KRC-765 E: KRC-691Y E1: KRC-691 indicates safety critical components. - Page 16 1000PF K RK73FB2B472J CHIP R 4.7K 1/8W E40-9541-05 PIN ASSY R78,79 RD14DB2H102J SMALL-RD 1.0K 1/2W E41-0167-05 PIN ASSY RK73GB2A223J CHIP R 1/10W M1 E40-3260-05 PIN ASSY RK73FB2B472J CHIP R 4.7K 1/8W M: KRC-765 E: KRC-691Y E1: KRC-691 indicates safety critical components.
- Page 17 RK73GB2A102J CHIP R 1.0K 1/10W D21,22 AM01Z DIODE R213 RK73GB2A474J CHIP R 470K 1/10W D23,24 DIODE R214,215 RK73GB2A104J CHIP R 100K 1/10W R216 RK73GB2A471J CHIP R 1/10W D25-28 AM01Z DIODE M: KRC-765 E: KRC-691Y E1: KRC-691 indicates safety critical components.
- Page 18 CHIP R 1/10W UN5112 DIGITAL TRANSISTOR RK73GB2A102J CHIP R 1.0K 1/10W DTC114YUA DIGITAL TRANSISTOR UN5214 DIGITAL TRANSISTOR R15,16 RK73GB2A103J CHIP R 1/10W Q38,39 2SC4081 TRANSISTOR R17-19 RK73FB2B331J CHIP R 1/8W M: KRC-765 E: KRC-691Y E1: KRC-691 indicates safety critical components.
- Page 19 FLAT WASHER D12-0622-08 N19-2092-08 FLAT WASHER D13-1327-08 GEAR N29-0510-08 RETAINING RING D13-1328-08 GEAR D13-1329-08 GEAR T31-0220-08 PLAYBACK HEAD D10-4119-08 T42-0759-18 MOTOR ASSY (MAIN) D13-1330-08 GEAR T42-1005-08 MOTOR ASSY (SUB) D13-1331-08 GEAR M: KRC-765 E: KRC-691Y E1: KRC-691 indicates safety critical components.
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Page 20: Specifications
(H) ....... 53mm Weight ........... 1.20kg (D) ....... 150mm Weight ........... 1.20kg KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. US and foreign patents licensed from Dolby Laboratories Licensing Corporation.