Operation Check And Main Component Replacement Procedures; To Supply Power Source .0 - Technics SU-C800UM2 Service Manual

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BH To Supply Power Source
This unit SU-C800UM2 is designed to operate on power supplied from the Power Amplifier SE-A900SM2 or SE-
A800SM2.
When operating the unit SU-C800UM2 alone for testing and servicing, without having power supplied from the
Power Amplifier SE-A900SM2 or SE-A800SM2, use the following method.
Power Supply to Main Circuit
1. Apply 11 V AC power to the section between the point[TP1]and the point[TP2].
2. Connect the DC +12 V to +15 V (more than 0.1 A) to the point[TP5], and the[GND]terminal to the point[TP4]using the DC power
supply. .
3. Connect the DC -12 V to -15 V (more than 0.1 A} to the point[TP3}, and the GND terminal to the point[TP4]using the DC power
supply.
Operation Check
1,input a signal {1 kHz, 100 mV) to the each line-in terminal.
3. Connect the oscilloscope or the speaker with the built-in amplifier to the PRE OUT terminals and check if the signals are outputting from
this unit.
DC power supply
{+DC12 V to £15 V: more than 0.1 A)
PRE OUT 2 Terminals
TAPE 1 PLAY (IN)
TAPE 2 PLAY (IN)
AUX
CD
ik TUNER
cite Pt |
PRE OUT 1 Terminals
(Main P.C.B.)
Fig. 1