Sony HCD-GTR888 Service Manual ▷ View online
25
<Note>
Check the terminal of
coil and, + terminal and -terminal of capacitor
and ,the ohmic value of each channel .
Their terminal are equal to the ohmic value
Their terminal are equal to the ohmic value
of terminal for the POWER
AUDIO DRIVER .
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26
(1) Audio signal input
(2) Pre AMP
(3) POWER AMP
(4) Power audio driver (MOS FET) under Heat sink
(5) Speaker Relay
(6) Speaker Out
(7) Heat sink
(8) 13.5V input from Switching regulator board
(9) REG ICs
(10) PVDD(104V) input from Switching regulator board
(2) Pre AMP
(3) POWER AMP
(4) Power audio driver (MOS FET) under Heat sink
(5) Speaker Relay
(6) Speaker Out
(7) Heat sink
(8) 13.5V input from Switching regulator board
(9) REG ICs
(10) PVDD(104V) input from Switching regulator board
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27
Following are descriptions of the
Tuner
section.
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28
(1) The received signals are turned by control signal from the
SYSTEM CONTROLLER(IC500).
(2) FM/AM signal input from antenna is converted to analog audio by
the TUNER PROCESSOR(IC1602).
(3) The analog audio signal is output to the INPUT SELECTOR
ELECTRICAL VOLUME (IC806).
(4) The control signal from SYSTEM CONTROLLER is input to INPUT
SELECTOR ELECTRICAL VOLUME and controls in the same way
as a disc play signal, and outputs the signal to CLASS D AMP.
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