Sub-Ts5/Ts6 Test Procedure - Harman Kardon HKTS 5 Service Manual

HKTS5/HKTS6
Equipment needed:
• Function/signal generator/sweep generator
• Integrated Amplifier
• Multimeter
• Speaker cables
• Single RCA cable
General Unit Function (UUT = Unit Under Test)
1) From the signal generator, connect one line level (RCA) cable to the single SUB input.
2) On the front of the unit, turn the LEVEL control full counterclockwise.
3) Turn on generator, adjust to 150mV, 50 Hz.
4) Plug in UUT; turn the power switch ON. LED should be Red. Turn LEVEL control full clockwise (MAX)
5) LED should now be Green; immediate bass response should be heard and felt from port tube opening.
6) Turn off generator, turn VOLUME control fully counterclockwise, disconnect RCA cable.
Sweep Function
1) Follow steps 3-6 above, using a sweep generator as a signal source.
2) Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any
other noises. If any unusual noises are heard, remove woofers and test.
Driver Function
1) Remove woofer from cabinet; detach + and - wire clips.
2) Check DC resistance of woofer; it should be 3.4 ohms ±10%
3) Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier
fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.
4) Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.
5) Caution: when re-connecting woofer wires, observe proper polarity, as Faston connectors are the same size;
red wire should connect to terminal with red dot.
HKTS 5/HKTS 6 TEST PROCEDURE
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harman/kardon