Harman kardon citation 21 service manual

Page 1

The Harman Kardon
Model Citation21 Mam. 112A

STEREO PREAMPLIFIER

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The following marks found in the parts list of this manual identify
the models as follows.

CID : North America area model
0 : General model
(I. : Japan model

harman/kardon

240CrosswaysParkWest,Woodbury, NY. 11787
11 1273152112A5 P 088706 1500 Printed In Japan

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SPECIFICATIONS
Nominal Limit Nominal Limit
Input Sensitivity/Impedance THD at 1V Output (1kHz)
Phono(MM) 2.2mV/47k9 Tuner, CD, Video, Tape 0.005% g 0.01%
(MC) 125;;V/569 Frequency Response at -3dB O.25Hz~245kHz
Tuner, CD, Video, Tape ISOmV/23k9 Subsonic Filter at 20Hz -3dB 1 1dB
Ham and Noise Ratio Tone Control Characteristics
Phono(MM) 78dB g 74dB Bass at 50Hz
(MC) 73dB g 69dB Boost 9.5dB : 1dB
Tuner, CD, Video, Tape 84dB ; 80dB Cut 11dB i 1dB
Signal to Noise Ratio (IHF-A) Treble at 10kHz
Phono(MM) 84dB ; 80dB Boost 9dB : 1dB
(MC) 78dB ; 74dB Cut 9dB i 1dB
Tuner, CD, Video. Tape 94dB ; QOdB Dimensions (W x H xD) 17-3/8 x 3-1/2" x 13-5/8"
Channel Separation (440 x 90 x 345mm)
Phono(MM) 54dB ; 50dB Weight
(MC) 55dB ; 50dB Power Supply
Tuner, CD, Video, Tape 56dB g 50dB North America area model AC 120V, 60Hz
Overload (20~20kHz) General model AC220/240V, 50/60Hz
Phono(MM) 165mV ; 150mV Japan model AC1OOV, 50/60Hz
(MC) 9.2mV ; 5mV Power Consumption 25W

Specifications and components subject to change without notice. Overall
performance will be maintained or improved.

This specification is the target of servicing. But, Ihere is a case that the
specification is not applicable to the measurement condition and instrument.

LEAKAGE TEST (Fon SERVICE ENGINEERS IN THE USA.)

Before returning the unit to the user, perform the following safety checks:

1. Inspect all lead dress to make certain
that leads are not pinched or that
hardware is not lodged between
the chassis and other metal parts
in the unit.

2. Be sure that any protective devices
such as nonmetallic control knobs,
insulating fishpapers, cabinet backs,
adjustment and compartment covers
or shields, isolation resistor-capacity
networks, mechanical insulators,
etc. which were removed for servic-
ing are properly reinstalled.

3. Be sure that no shock hazard exists; check for leakage
current using Simpson Model 229 Leakage Tester,
standard equipment item No. 21641, RCA Model
WT540A or use alternate method as follows:

Plug the power cord directly into a 120-volt AC
receptacle (do not use an Isolation Transformer for
this test). Using two clip leads, connect a 1500
Ohm, 10watt resistor paralleled by a 0.15 F capacitor,
in series with all exposed metal cabinet parts and
a known earth ground. such as a water pipe or conduit.
Use a VTVM or VOM with 1000 Ohms per volt, or
higher sensitivity to measure the AC voltage drop
across the resistor. (See Diagram.) Move the resistor
connection to each exposed metal part having a
return path to the chassis (antenna, metal, cabinet,
screw heads, knobs and control shafts, escutcheon,
etc.) and measure the AC voltage drop across the
resistor. (This test should be performed with the power switch in both the On and Off positions.)

A reading of 0.35 volt RMS or more is excessive and indicates a potential shock hazard which must be corrected before
returning the unit to the owner.

SIMPSON MODEL 229 ETC. FOR
LEAKAGE TEST

TO AC GROUND SUCH
AS WATER PIPEEX CABLE,
CONDUIT, ETC,

TO EACH EXPOSED
METAL SURFACE OF
UNIT UNDER TEST

HIGH
VOLTAGE
OR + LEAD

GROUND
LEAD

5

VTVM
-0 AC SCALEO-

1.5kfl
10W

MA:

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0.15;:

TEST PROBE

CONNECT TO KNOWN
EARTH GROUND

TO EXPOSED
METAL PARTS