Harman kardon t 25 service manual

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The Harman Kardon ~

Model T25 Mm. Nam
SEMI-AUTOMATIC TURNTABLE

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harman/kardon

240 CROSSWAVS PARK wast wooDaunv. NM 11797
I112-H15273A7 P 03343 550 PWNYEO IN JAPAN

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SPECIFICATIONS

Wow & Flutter (WRMS) 0.05%

Rumble (DIN-B WTD) -65dB, DIN 45544
record reference

Pitch Adjustable Range $396

Tonearm

Effective Tonearm Mass

Stylus Overhang
Offset Angle
Effective Length
Tracking Error
Phono Capacitance

Tracking Force

119 (plus the mass of
the cartridge used)

18mm
25.5°
216mm

i2 degrees
160pF

0 ~ 3 grams

Acceptable Weight of Cartridge 4.5 ~ 7 9

15-1/ " x 5-5/1l
(386 X134 x 3

Weight 11 lbs. 1102. (5.
Power Supply
U.S.A. and Canada models AC120V, GOHZ

AC110-120V/21
50/60Hz

Power Consumption 3W

Dimensions (W x H x D)

General model

Specifications and components subject to change withou
Overall performance will be maintained or improved.

LEAKAGE TEST (FOR SERVICE ENGINEERS IN THE U.S.A.l

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

1. Inspect all lead dress to make cer-
tain that leads are not pinched or
that hardware is not lodged be-
tween 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 cov-
ers or shields, isolation resistor»
capacity networks, mechanical in-
sulators, etc. which were removed
for servicing 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
WT54OA 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, 10-watt resistor paralleled by a 0.15pF capac»
itor, 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.)

TO EACH EXPOSED
METAL SURFACE OF
UNIT UNDER TEST

SlMPSON MODEL 229 ETC. FOR
LEAKAGE TEST

TO AC GROL
AS WATER C
CONDUlT, E

HIGH
VOLTAGE
0R +LEAD

LEAD

VTVM
-OAC SCALE 0-

1 .Skn
10W

WV

_'|_

0.15uF

TEST PROBE

TO EXPOSED
METAL PARTS

CONNECT TO KNC
EARTH GROUN

A reading of 0.35 volt HMS or more is excessive and indicates a potential shock hazard which must be correc

returning the unit to the owner.