Read Sony DAR-RH7000 Service Manual online
15
3) Checking of ON/STANDBY indicator
ON/STANDBY indicator: “Flashing”
=> Short circuit of speaker cable,
over temperature of power amplifier
by the dust of ventilation hole, etc.
“AMP PROTECT” is displayed in the front
panel of HCD-RH7000 at the same time.
3) ON/STANDBY indicator
When this indicator flashed, the protection circuit operates in the amplifier circuit.
The protection circuit detects overload of speaker line and over temperature of
DIGITAL POWER AMP IC at the same time.
DIGITAL POWER AMP IC at the same time.
If the abnormal situation is detected, the information is sent to AMP CPU
(IC1001 48pin) and AMP CPU stops the sound output.
Please check the shortage of the speaker cable line and the mechanical ventilation
situation, too.
situation, too.
And, please be noted that “AMP PROTECT” is also displayed when 30V for
POWER AMP IC is not output correctly. (CN902 3,4pin)
POWER AMP IC is not output correctly. (CN902 3,4pin)
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