Sony STR DA2400ES - 7.1 Channel Home Theater AV Receiver Service Manual page 6

STR-DA2400ES/DG920
UPDATE OF SOFTWARE OF IC8014 ON THE MICON BOARD
Perform operation of the following when the update of software of the IC8014 on the MICON board is necessary.
• DA2400ES: US model
Connect:
for PC
Procedure:
1. Connect J861 on the CIS board and PC by using the RS-232C cable.
2. Turn on the main power.
3. The update is executed by using PC.
4. When the update ends, turn off the main power.
5. Remove the RS-232C cable from the J861 on the CIS board and PC.
• DA2400ES: AEP, Continental European, East European, Russian and UK models/DG920
Connect:
JIG
for PC
(Part No. : J-2501-300-A)
Procedure:
1. Remove the KNOB (VOL) ASSY and connect CN717 on the DISPLAY board and PC by using the jig.
2. Turn on the main power.
3. The update is executed by using PC.
4. When the update ends, turn off the main power.
5. Remove the jig from the CN717 on the DISPLAY board and PC.
ERROR MESSAGES
If there is a malfunction, the display shows a code of two numbers and a message. You can check the condition of the system by the message.
Refer to the following table to solve the problem.
messages
PROTECTOR Irregular current is output to the speakers, or the upper panel of the receiver is covered with something. The receiv-
er will automatically turn off after a few seconds. Cheack the speakers connection and turn on the power again.
6
J861
DISPLAY Board
CN717
cause and response