Sony STR-DB790 Service Manual

16
STR-DA1000ES/DB790
DSP TEST MODE
Procedure:
1. Press the I/1 button to turn on the main power, then while pressing the [MEMORY/ENTER] button, press the [SURR BACK DE-
CODING] button.
2. The message “SPECIAL” appears.
3. Each time the [MENU] dial is turned clockwise, the item is switched in order as follows .
Items Display Remark
Destination and software
****
XXX
****
: destination, XXX: software version
Model name DA1000 or DB790 Never change (IF changed, INITIALIZE works every AC on)
Destination change DES. XXXX XXXX: destination
Command mode change C.MODE.AV1 or C.MODE.AV2
Volgate limiter working level V.LIM. > XX Never change
Power control after protector on PROT.EVER or PROT.OFF
When PROTECTOR works, system power is automatically
down after 5 sec for safety (Set “Ever On” for the servicing)
SWAP SWP. XXXX Switching with [--/+] dial
Bass management BM. XXXX AUTO, OFF, 1 to 28 (switching with [--/+] dial)
Co-ef. Read address RA.12XXX Turn the [--/+] dial to switch the read data address
Co-ef. Read data RD.XXXXXX xx Value is read data
Co-ef. Write address WA.12XXX Turn the [--/+] dial to switch the write data address
Co-ef. Write data WD.XXXXXX xx Turn the [--/+] dial to set the write data
Total operation time TTL-XXXX xx
4 large character is hour, 2 small character is minutes
Longest power on time LNG-XXXX XX
Volume I – 50 dB time display V50-XXXX XX
Volume I – 40 dB time display V40-XXXX XX
Volume I – 30 dB time display V30-XXXX XX
Volume I – 20 dB time display V20-XXXX XX
Volume I – 10 dB time display V10-XXXX XX
Volume I 0 dB time display V00-XXXX XX
Protector count value PROT XXX 0 to 255
EEPROM condition E-XXXXX
S RST (super reset, first time use EEPROM, test pattern
corrupted) FAIL (EEPROM read/write with microprocessor
have problem)
V CHG (software version change)
D CHG (destination/model change)
CLEAR (back up data initialize)
NORM (normal AC on)
EEPROM read E-XXX-XX
First four hex code is EEPROM address
Last two hex code is EEPROM data
EEPROM super reset S.RST-YES or S.RST-NO
Not used for the servicing
When EEPROM initialization is required, perform the “all clear
mode” (see page 15)
Ver 1.3
w w w . x i a o y u 1 6 3 . c o m
Q Q
3
7
6 3
1 5 1 5
0 9 9
2
8 9
4 2
9 8
T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Sony STR-DB790 Specifications

General

Dimensions (WxDxH)	430 x 401 x 161 mm
Power requirements	230 V, 50/60 Hz
Supported radio bands	FM, MW
Radio Data System (RDS)	Yes
I/O ports	5.1 Analogue Input - 1.0 Audio Input - 3.0 Audio Input Front - 1 AV, S-Video Audio Output - 1.0 Control A1 / A1 II Digital Input: coaxial - 1.0 Digital Input: optical - 4.0 Digital Output: optical - 1.0 Headphone Output Monitor Output (Picture): FBAS - 1.0 Monitor Output (Picture): S-Video - 1.0 Phono Input Speaker Selector A S-Video Input - 4.0 S-Video Output - 1.0 Video Input - 5.0 Video Output - 2.0
Connectivity technology	Wired
Power consumption (standby)	0.5 W
Power consumption (typical)	290 W

Weight and Dimensions

Weight	12500 g