Kenwood KRC-708 Service Manual
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Kenwood KRC-708 Service Manual

Kenwood KRC-708 Service Manual

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CASSETTE RECEIVER
KRC-708/ 888/ X858/
QQ
3 7 63 1515 0
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-PS988R
Front glass
(B10-3101-01)
Escutcheon assy
(B07-2139-03)
KRC-X858
Front glass
(B10-3099-01)
Escutcheon assy
(B07-2146-03)
KRC-888
TE
L 13942296513
Front glass
(B10-3102-01)
Escutcheon assy
(B07-2139-03)
KRC-708
Front glass
(B10-3100-01)
Escutcheon assy
(B07-2139-03)
Escutcheon
(B07-2183-02)
Plastic cabinet assy
www
(A02-1489-03)
.
PS988R
Lever
Torsion coil spring
(D10-4301-14)
(G01-2924-04)
(D10-4302-14)
DC cord
KRC-X858/888/708 :
(E30-4779-05)
x
KRC-PS988R :
ao
y
(E30-4781-05)
i
8
KRC-PS988R
.
/
/
KRC-X858
DISP
B.S/
MTL/
Q Q
3
6 7
1 3
KRC-888
.
/
/
AUTO
AME
KRC-708
DISP
MTL/
B.S/
Bracket(L)
Stay
(J19-4876-04)
(J54-0606-04)
Mounting hardware assy
(J21-9491-03)
u163
.
Remote controller assy
(A70-0886-15)
2 9
9 4
2 8
2000-2 PRINTED IN KOREA
C
B51-7588-00 ( K ) 1790
Panel assy
(A64-1860-02)
Panel assy
(A64-1858-02)
Panel assy
1 5
0 5
8
2 9
9 4
(A64-1861-02)
Panel assy
(A64-1859-02)
Screw set
(N99-1683-05)
Bracket(R)
(J19-4875-04)
Remote controller assy
m
KRC-PS988R/888/708 :(A70-0883-05)
KRC-X858 :(A70-0894-05)
co
Size AAA battary
(Not supplied)
9 9
2 8
9 9
Screw set
(N99-1652-05)
40%

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  • Page 1 CASSETTE RECEIVER KRC-708/ 888/ X858/ 3 7 63 1515 0 PS988R SERVICE MANUAL 2000-2 PRINTED IN KOREA B51-7588-00 ( K ) 1790 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).
  • Page 2 Q57-62 IC1,2 RST SW DIMMER DC/DC (FOR 4.5V PRE) G/A SW DRIVER Q41,42 MAIN MOT KRC-PS978R KRC-778RV/RYV Q33,40,44 KRC-888 ILL AVR KRC-878R VLCD u 1 6 3 KRC-PS988R KRC-708 KRC-778R/RY Depeds on the model. Refer to the parts list. KRC-X858...

  • Page 3: Microcomputer Terminal Description

    KRC-708/888/X858/PS988R 3 7 63 1515 0 MICROCOMPUTER TERMINAL DESCRIPTION UPD784217GC103(105) (IC1: X14-618X-XX) System MicroComputer Pin Name Signal Name Purpose Operation Description P120/RTP0 CHCON Changer control terminal. ON:Hi, OFF:Lo P121/RTP1 CH_MUTE Muting input to changer. ON:Hi, OFF:Lo P122/RTP2 REQH Handshake request to changer.
  • Page 4 KRC-708/888/X858/PS988R 3 7 63 1515 0 MICROCOMPUTER TERMINAL DESCRIPTION UPD784217GC103(105) (IC1: X14-618X-XX) System MicroComputer Pin Name Signal Name Purpose Operation Description 52 P84/A4 WIDE K2I Forced Wide output. H:Forced Wide 53 P85/A5 NARROW I/O K2I Forced Narrow output. H:Forced Narrow...

  • Page 5: Test Mode

    3. "ADJ OK" is displayed when the result is OK or "ADJ (11) Simplified security code clear procedure NG" is displayed when it is No Good. (KRC-X858, KRC-708) 1. During the code request mode, while holding the DISP (4) AM SD voltage write key depressed, press and hold the Volume UP key for 1.
  • Page 6 KRC-708/888/X858/PS988R 3 7 63 1515 0 TEST MODE (12.2) Procedure for canceling the MASK key (13) Other request (when the set is reset or the back-up o Automatic panel closing when the TAPE/CD/MD is power is turned off while the MASK key is inserted is disabled.
  • Page 7 KRC-708/888/X858/PS988R ADJUSTMENT 3 7 63 1515 0 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.
  • Page 8 PC BOARD 3 7 63 1515 0 (Component side view) (Foil side view) X13-9720-10 (J74-0984-12) X13-9720-10 (J74-0984-12) ILL+B ILL+B L CLK L CLK L DATAL L DATAL REMO REMO L 13942296513 DGND DGND DIMMER DIMMER LOCK SW LOCK SW RESET RESET ILL G ILL G...
  • Page 9 PC BOARD (Component side view) 3 7 6 3 1 5 1 5 0 X14-618X-XX Ref.No. Address Ref.No. Address Ref.No. Address Ref.No. Address X14-618X-XX A/2 (J74-0986-22) IC10 IC11 IC12 R120 R121 IC13 IC14 IC15 C190 R122 C100 IC13 X14 B/2 R162 C137 R115...
  • Page 10 PC BOARD (Foil side view) (Component side view) (Foil side view) X14-618X-XX Ref.No. Address Ref.No. Address Ref.No. Address Ref.No. Address 3 7 6 3 1 5 1 5 0 X14-618X-XX A/2 (J74-0986-22) IC10 IC11 IC12 IC13 C100 IC14 R120 IC15 R121 C190 X87-301X-XX (J74-0985-12)
  • Page 11 OFF,B : 0.4V -9.8V AM/IF C117 Q57-62 KRC-888 DIF VOL. 4.0V 0.27 4.0V 4.16V REGULATOR 4.0V HP FL1 KRC-708 -10V 0.27 FF,REW : 0V AUX2 OUTR HP FL2 4.0V PLAY : 4.05V 8.1V AUX2 OUTL 4.0V HP FR1 : 0V 4.0V...
  • Page 12 ICL7660SIBA rating fuse(s). To reduce the risk of electric shock, RF GND KRC-888 0-22 UPD784217GC103 leakage-current or resistance measurements shall be FM ANT IN KRC-708 0-12 UPD784217GC103 R166 Q87,89 carried out (exposed parts are acceptably insulated FM+B R305 2.2K D38,...
  • Page 13 IC1 : LC75808W GND LINE MODEL NAME UNIT No. IC2 : LC75878W DTC114EK 2SD1819A B LINE IC3 : RS-171 KRC-X858 DTC114TK 2SD2114K KRC-708 Q1,2 : DTA114EK or KRC-888 0-10 B38-1034 DTC114YK UN2111 KRC-778R Q3,4 : 2SD2114K KRC-778RY DTC114YUA Q5-7 :...
  • Page 14 To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer. u163 KRC-778R/PS988R/X858/778RVY/PS978R/878R/708/888/778R/778RY (2/2) KRC-708/888/X858/PS988R...

  • Page 15: Exploded View (Mechanism)

    KRC-708/888/X858/PS988R 3 7 63 1515 0 EXPLODED VIEW (MECHANISM) L 13942296513 u163 Parts with exploded numbers larger than 700 are not supplied.

  • Page 16: Exploded View (Unit)

    KRC-708/888/X858/PS988R 3 7 63 1515 0 EXPLODED VIEW (UNIT) Size AAA battary (Not supplied) (X13-978) FPC1 (X13-978) (X13-978) (X13-978) (X13-972) (X13-972) (X13-972) (X13-978) (X13-972) FPC2 (X14) L 13942296513 (X13-972) X13-9720-20 X14-6180-XX (X14) X87-301X-XX (A/2) X14-6180-XX (X92) (B/2) N83-3008-46 (X13-978) N83-3005-46...

  • Page 17: Parts List

    PAN HEAD TAPTITE SCREW N38-2030-45 PAN HEAD MACHIN SCREW D13-1453-14 GEAR ASSY D13-1312-34 GEAR N09-4184-05 MACHINE SCREW (M2X2) K : KRC-X858 K1 : KRC-708 E: Europe K: North America M: Other Areas M1 : KRC-PS988R indicates safety critical components. M2 : KRC-888...

  • Page 18: Switch Unit (X13-9720-Xx)

    16WV KK1M2 RK73FB2A222J CHIP R 2.2K 1/10W M1 RK73FB2A223J CHIP R 1/10W C90-2926-05 ELECTRO 220UF 16WV K : KRC-X858 K1 : KRC-708 E: Europe K: North America M: Other Areas M1 : KRC-PS988R indicates safety critical components. M2 : KRC-888...
  • Page 19 MULTI-COMP 4.7K X4 C191 CK73FB1H103K CHIP C 0.010UF R90-0737-05 MULTI-COMP 100K X2 C201 CK73FB1H822K CHIP C 8200PF K : KRC-X858 K1 : KRC-708 E: Europe K: North America M: Other Areas M1 : KRC-PS988R indicates safety critical components. M2 : KRC-888...
  • Page 20 CHIP R 1/10W K1 R113 RK73EB2B752J CHIP R 7.5K 1/8W R252 RK73FB2A473J CHIP R 1/10W KM1 K : KRC-X858 K1 : KRC-708 E: Europe K: North America M: Other Areas M1 : KRC-PS988R indicates safety critical components. M2 : KRC-888...
  • Page 21 DIODE R339-342 RK73EB2B102J CHIP R 1.0K 1/8W R32-0229-05 SEMI FIXED VARIABLE RESISTOR M1 HZM4.7N(B2) ZENER DIODE K : KRC-X858 K1 : KRC-708 E: Europe K: North America M: Other Areas M1 : KRC-PS988R indicates safety critical components. M2 : KRC-888...

  • Page 22: Dolby Noise Reduction Unit (X87-301X-Xx)

    DOLBY NOISE REDUCTION UNIT (X87-301X-XX) KRC104S TRANSISTOR UN2213 DIGITAL TRANSISTOR C1 -4 CK73FB1H471K CHIP C 470PF K K : KRC-X858 K1 : KRC-708 E: Europe K: North America M: Other Areas M1 : KRC-PS988R indicates safety critical components. M2 : KRC-888...

  • Page 23: Mechanism Assy (X92-3790-Xx)

    SLIDER(MAIN PLATE) D13-1494-08 GEAR(B) D13-1495-08 GEAR(C) D13-1496-08 GEAR(D) u163 D10-4376-08 ARM(P-G PLATE) J90-0948-08 GUID D15-0919-08 PULLEY(MID) K : KRC-X858 K1 : KRC-708 E: Europe K: North America M: Other Areas M1 : KRC-PS988R indicates safety critical components. M2 : KRC-888...

  • Page 24: Specifications

    KRC-708/888/X858/PS988R 3 7 63 1515 0 SPECIFICATIONS KRC-PS988R Frequency Range 87.5MHz~108.0MHz (Frequency Step) (50kHz) Channel Space Selection FIX Usable Sensitivity 9.3dBf S/N 30dB (0.8µV/75Ω) Quieting Sensitivity 15.2dBf S/N 50dB (1.6µV/75Ω) Frequency Response 30Hz~15kHz (±3.0dB) S/N(dB) 70dB (MONO) Selectivity 80dB (±400kHz)
  • Page 25 161(mm) Weight 3.7lbs(1.7kg) 3.7lbs(1.7kg) 1.7kg 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. P.O. Box 22745, 2201 East Dominguez Street, Via G.

This manual is also suitable for:

Krc-ps988rKrc-888Krc-x858

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