Jvc KSRT 808 Service Manual

Page 1

KS *- RT808 C/J

JVB

SERVICE MANUAL

KS - RTBOB C/J

Contents

I .Features ........................................ pagez I.Standard schematic diagram ................... 31
I Specifications ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 @Location of p.c.board parts and parts list 34
I .Instructions ---------------------------------------- 3 .Expioded View of enclosure assembly

..Location of main parts ............................ 18 and parts fist ...................................... 40
.Removai of main parts --------------------------- 20 Exploded view of mechanism

..Main adjustment ................................... 22 assemmy and parks 5t .......................... 42
[Block diagram ........... . .......................... 25 [E .packmg illustration and parts list ............... 45

No.49253

March 1995

Page 2

KS - RT808 C/J

FEATURES

0 Detachable Control Panel

0 Voice Support System

0 This unit is for control of a JVC CD changer
(Applicable models: KD-MK70/MK66 etc).

o AMIFM Stereo PLL Synthesizer Tuner

- 24~Station Preset Tuning (FM~18, AM-6)

o Preset Scan/Seek/Manual Tuning

0 Strong-station Sequential Memory (SSM)

O U-Turn Auto-Reverse Mechanism

0 Ignition Key-oil Release/Key-on Play Mechanism

0 Multi Music Scan

' Dolby B Noise Reduction

0 4-Channel Amplifier System

0 Maximum Power Output of 80 watts per channel
(Front)/30 watts per channelr(Rear) (KS-RTBOS)

0 Maximum Power Output of 22 watts per channel
(Front)/22 watts per channel (Rear) (KS-RT707)

0 One Touch Operation

0 Sound Control Memory

0 Wireless Remote Control (KS-RT808 only)

0 Digital Clock Display

0 Line Output Terminal

Dolby Noise Reduction manufactured under
license from Dolby Laboratories Licensing
Corporation. "Dolby" and the doubleD symbol
DD are trademarks of Dolby Laboratories
Licensing Corporation.

2 (No. 49253)

SPECIFICATIONS

ll

AUDIO AMPLIFIER SECTION

(KS-RT808)

Maximum Power Output: (Front) 30 watts per channel

, (Rear) 30 watts per channel

Cominuous Power Output (HMS): (From) 13 watts per
channel into 4 Q, 40 to 20,000 Hz at no more than
0.8% total harmonic distortion, (Rear) 13 watts per
channel into 4 (2, 40 to 20.000 HZ at no more than
0.8% total harmonic distortion,

(KS-FIT707)

Maximum Power Output: (Front) 22 watts per channel
(Rear) 22 watts per channel

Continuous Power Output (RMS): (Front) 8 watts per
channel into 4 9:40 to 20,000 Hz at no more than
0.8% total harmonic distonion. (Rear) 8 watts per
channel into 4 Q. 40 to 20,000 Hz at no more than
0.8% total harmonic distortion,

Load Impedance: 4 Q (4 to 8 £2 allowance)
Tone Control Range
Bass: :10 dB at 100 Hz
Treble: :10 dB at 10 kHz
Frequency Response: 40 to 20,000 Hz
Signal-to-Noise Ratio: 70 dB
LineOut Level/Impedance: 0.5 V/20 kn load
(250 nWo/m)

RADIO SECTION
Frequency Range
FM: 87.5t0107.9 MHZ
(with channel interval set to 200 kHz)
87.5 to 108.0 MHz
(with channel interval set to 50 kHz)
AM: 530 to 1,710 kHz

(with channel interval set to 10 kHz)
531 to 1,602 kHZ
(with channel interval set to 9 kHz) l

[FM Tuner]

Usable Sensitivity: 1 1.3 dat (1.0 III/I75 m

50 dB Quieting Sensitivity: 16.3 dBl (1.8 uV/75 {2)

Alternate Channel Selectivity: (400 kHz): 65 dB

Frequency Response: 40 to 15,000 Hz

Stereo Separation: 35 dB

Capture Ratio: 1.5 dB

[AM Tuner] _

Sensitivity: 20 (AV

Selectivity: 35 dB

CASSETTE DECK SECTION
Wow & Flutter: 0.11% (WRMS)
Fast-Wind Time: 100 sec. (0-60)
Frequency Response: 50 to 16,000 Hz (:3 dB)
Signal-to-Noise Ratio:
(Dolby NR-ON): 60 dB
(Dolby NR-OFF): 52 dB
Stereo Separation: 40 dB

GENERAL
Power Requirement
Operating Voltage: DC 14.4 volts (11 to 16 volts
allowance)
Grounding System: Negative ground
Dimensions (W x H x D)
Installation Size: 182 x 52 x 152 mm
(7-6/15" X 2-1/16" X 6)
Panel Size: 139 x 58 x 14 mm
(7-1/2" X 25/16" x 5/8")
Gross Weight: 2.0 kg (4.5 lbs) (KS»FITBOB)
1.9 kg (4.2 lbs) (KS-FIT707)

Design and specifications subject to change without
notice.

It a kit is necessary (or your car, consult
your telephone directory for the nearest car
audio speciality shop.