Denon PMA-1600NE Service Manual page 45
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Also See for PMA-1600NE:
- Quick start manual ,
- Owner's manual (79 pages) ,
- Owner's manual (57 pages)
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Hi
Check that voltage is supplied
to [N311 : 1pin] (U8503 output)
Check that voltage is supplied
to the [Q104 : collector]
Active
Check that the voltage of VOLT-
Check that voltage is supplied
AGE_PROT is active. [Q120 :
to [U201 : 5pin]
Collector]
Hi
Hi → Lo
Check that voltage is supplied to
[N450 : 1pin] and [N450 : 4pin]
Check that voltage is supplied
to the [C407, C408]
Check that voltage is supplied
to the [U414] output (+5V)
Check that voltage is supplied
to the [U412] output (+5V)
YES
NG
Malfunction of [U8502, D8513 -
8520].
YES
NG
Malfunction of [Q101, 104].
YES
NG
Check that voltage is supplied
to [U102 : 48pin]. (ANA_MODE)
YES
NG
Malfunction of [D8602-8605].
YES
NG
Malfunction of [U8601, 8602].
YES
NG
Malfunction of [U414].
YES
NG
Malfunction of [U412].
YES
Hi
Check that voltage is supplied
to [N1011 : 1, 2pin]
Check that voltage is supplied
to [C207]
Active
Check the input level, speaker
Check that the voltage of PROT2
connector and speaker resis-
is active. [Q144 : collector]
tance value
Hi → Lo
45
YES
NG
Malfunction of [D8601].
YES
NG
Malfunction of [U201].
YES
・Detection of the DC offset
・Thermal detection
・Over current
Damage to power amplifier
Damage to power supply circuit
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