Marantz SR5002, Service Manual

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10
Less than 200msec
Power Amp Fail
SPK Relay Relay off
FL Display 2 sec
"PROTECT" Display on FL
STANDBY
STANDBY LED
STANDBY LED OFF
0.5sec blinking
More than 200msec
Power Amp Fail
SPK Relay Relay off
STANDBY
STANDBY LED
STANDBY LED OFF
0.125sec blinking
CHECK POINTS OF SCHEMATIC
1. When trouble is caused in Power Amp, it repairs.
2. When trouble is not found in Power Amp, it is confirmed whether there are in the disconnection and the detector circuit of
the pattern of IC11 29pin (Power Amp Fail) abnormalities.
4. Below is PROTECT MODE which does not display "PROTECT"
A. When "L" is detected in IC11 29pin(Power Amp Fail), the set is put into the state of STANDBY. At this time, when
the detection time of 29pin is longer than 200msec, STANDBY LED on Front Panel is put into the state of blinking at
0.125sec intervals. When this condition, The operation which enters FACTORY MODE is done, PROTECT MODE
release is performed and it Power ON once again.
SR4002/PS5072 : S.SPEAKER B + ATT + EXIT Press button 3sec
SR5002 : MULTI SPK + ATT + EXIT Press button 3sec
A set is broken in the flash state of the 0.125sec interval, so please never make the user do this release operation.
CHECK POINTS OF SCHEMATIC
1. When trouble is caused in Power Amp, it repairs.
2. When trouble is not found in Power Amp, it is confirmed whether there are in the disconnection and the detector circuit of
the pattern of IC11 29pin (Power Amp Fail) abnormalities.
B. When "L" is detected in IC11 66pin (Power Line Fail), (L=less than 3.5V) the set is put into the state of STANDBY.
STANDBY LED on Front panel. is put into the state of blinking at 0.125sec intervals. When this condition, The operation
which enters FACTORY MODE is done, PROTECT MODE release is performed and it Power ON once again.
SR4002/PS5072 : S.SPEAKER B + ATT + EXIT Press button 3sec