Sony STR-DH710 Service Manual page 11

SPDIF UPDATE MODE
User plays the CD that contains u-com/DSP data with CD/DVD
player.
Update u-com/DSP etc. fi rmware from SPDIF input.
Connection:
CD/DVD
set
player
DIGITAL board
TV OPTICAL IN jack (IC2002)
* Procedure:
Normal case
1. While pressing [INPUT MODE] and [MUTING] button,
press the [?/1] button to turn on the main power.
2. The messages "UPDATE" and "PLAY. DISC" are displayed
alternately every one second.
After this step, all user operation is prohibited except power
off. To cancel this mode, power off or AC power cord pull out
is required.
3. Connect CD player to TV OPTICAL IN jack (IC2002 on the
DIGITAL board), and play update CD.
Update is started when DSP detect update signal. The
message "UPDATING" is displayed blinks every one second.
From this step, all user operation is prohibited. Power off is
also prohibited.
4. While main u-com is being updated, fl uorescent indicator tube
is blacked out for few minutes.
5. When update data error is detected or disc is not matched with
target model, error messages "DISC ERR" and "PLAY. DISC"
are displayed to restart playing valid CD.
When fl ash writing error is happened, error messages "UPT.
ERR" and "PLAY. DISC" are displayed to restart playing CD.
6. When all update is fi nished, set is reboot automatically.
After reboot, complete message "COMPLETE" is displayed
(displayed continuously until any user operation).
* Procedure:
After update is abnormal exit, and set is power on again
1. Enter update mode automatically after power on.
2. The messages "UPDATE" and "PLAY. DISC" are displayed
alternately every one second.
From this step, all user operation is prohibited. Power off is
also prohibited.
If main u-com was failed to update, nothing is displayed.
3. Connect CD player to TV OPTICAL IN jack (IC2002 on the
DIGITAL board), and play update CD.
Update is started when DSP detect update signal. From this,
same as normal case.
VERSION CHECK
Function that displays the version number to check whether
SPDIF update is necessary or not.
* Procedure:
1. While pressing [INPUT MODE] and [DISPLAY] button,
press the [?/1] button to turn on the main power.
2. The message "VER X.XXX" is displayed. "X.XXX" is
calculated by adding all fi rmware version.
Example:
(MAIN ver. + DSP ver. + HDMI ver. + 7)/10 =
Displayed version
MAIN = 1.02, DSP = 1.01, HDMI = 1.00
↓
(1.02 + 1.01 + 1.00 + 1.03 + 7)/10 = 1.006
1.006 = X.XXX
SPDIF UPDATE TEST MODE
Function that checks hardware error for SPDIF update.
This test takes about 15 seconds.
* Procedure:
1. While pressing [INPUT MODE] and [DIMMER] buttons,
press the [?/1] button to turn on the main power.
2. The message "TESTING" is displayed.
3. When abnormality is not found, the message "COMPLETE"
will display.
4. Communication error between others devices micro-controller
and DSP, the messages "UART" and "ERROR" are displayed.
Communication error between HDMI microcomputer and
DSP, the messages "HDMI" and "ERROR" are displayed.
Communication error between MAIN MICOM and DSP, the
messages "VIDEO", "MCU" and "ERROR" are displayed.
Unknown error, the messages "UNKNOWN" and "ERROR"
are displayed.
5. To release from this mode, AC power cord pull out.
Note: SPDIF UPDATE MODE, VERSION CHECK and SPDIF
UPDATE CHECK are supported with DSP version 1.01 or later.
STR-DH710
11