DAV-DZ285K, DAV-DZ290M, DAV-DZ585K, DAV-DZ590M, DAV-DZ685K, DAV-DZ690M, HCD-DZ285K, HCD-DZ290M, HCD-DZ585K, HCD-DZ590M, HCD-DZ685K, HCD-DZ690M - Sony Audio Service Manual (repair manual). Page 20

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HCD-DZ285K/DZ290M/DZ585K/DZ590M/DZ685K/DZ690M
20
11.   PROTECTION  FACTOR  (SD  DETECTION/
  DC  DETECTION)  IDENTIFICATION  TEST  MODE
When an error is detected, the FL tube alternately displays 
“PROTECTOR h PUSH POWER”.
    
r
  Press the [
?/1
] button.
 
* Buttons other than the [
?/1
] button are invalid.
“STANDBY” blinks three times on the FL tube.
    r
The protection release state (POWER OFF) is established.
(No FL tube display) 
    r  Press the [
?/1
] button two times.
The power to the system turns on, and the normal operation is 
established. (Restore) 
During the protection state: 
1.  If the AC plug is connected or disconnected during the 
protection state, the protection state is released, and the 
normal operation is established. (The protection state is not 
maintained.) 
2.   The protection factor is displayed by pressing the [RETURN] 
t [3] t [2] t [0] t [0] t [ANGLE] buttons of the 
remote commander.
 
(during the “PROTECTOR h PUSH POWER” display).
 
k  When SD is detected: Repeats
   “SD 
DETECT 
h PROTECTOR”.
 
k  When DC is detected: Repeats 
   “DC 
DETECT 
h PROTECTOR”.
PL:  SD detection
 
When the “L” output from the SD (shutdown) port on the 
S-MASTER POWER Driver Shutdown and voltage descent 
(15V or less) of 30V power supply (PVDD) are detected.
 DC 
detection
 
When the “L” output from the power/speaker error detection 
circuit (DC detection port) is detected for two seconds 
continually, the power system other than that of the FL tube 
is turned off, and the protection state is established.
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