STR-DG820 - Sony Audio Service Manual (repair manual). Page 13

STR-DG820

SPECIAL  MENU  MODE
Procedure:
1.  Press the [POWER] button to turn on the main power, then while pressing the [TONE MODE] button, press the [A.F.D.], [2CH/A. 

DIRECT], [MUSIC], [MOVIE] button in order, the message “SPECIALIZE” appears.

2.  Press the [M] [m] button on the remote commander, the message “< SPECIAL>” appears.

3.  Press the [,] button on the remote commander, the item is appears.

4.  Each time the [M] [m] button on the remote commander is pressed, the item is switched in order as follows.

 

Some items can change the content. Display the cursor by pressing the [,] button on the remote commander, and changing the content 

by pressing the [M] [m] button on the remote commander, and fi x the content by pressing the [<] button on the remote commander 

when you want to change the content of the item.

5.  To release from this mode, while pressing the [TONE MODE] button, press the [A.F.D.], [2CH/A. DIRECT], [MUSIC], [MOVIE] but-

ton in order again, the message “OFF” appears.

Model/Destination change

MODEL

When [,] button on the remote commander is pressed, the message “G82 

** XXX” is appears
**: Destination
XXX: FIX or AUT

Main micom version display

M.Ver X.XX

X.XX: System controller software version

HDMI micom version display

H.Ver X.XX

X.XX: HDMI controller software version

DSP serial fl ash version display

S.Ver X.XX

X.XX: Serial fl ash software version

HD update

HD UPDATE

When [,] button on the remote commander is pressed, the message “ON” 

or “OFF” is appears

HDCP key read

HDCP KEY

When [,] button on the remote commander is pressed, the message “ON” 

or “OFF” is appears

Auto cal mic test

SP OUT

When [,] button on the remote commander is pressed, the message 

“SOURCE” or “mic” is appears
SOURCE: normal mode, MIC: mode that output audio from mic input

FL display fonts test

FL FONT

When [,] button on the remote commander is pressed, the message 

“0X**=X” is appears
**: 20 to FF, X: character

FL display test

All segments turn on

Each time [DISPLAY] button to change as follows
all on t test pattern 1 t test pattern 2 t all off t all on

DSP halt

DSP HALT

When [,] button on the remote commander is pressed, the message “ON” 

or “OFF” is appears

Super reset

RESET

Not used for the servicing
When EEPROM initialization is required, perform the “memory clearing 
mode”

RAM watch menu

RAM WATCH

When [,] button on the remote commander is pressed, the message 

“XXXXXXXXXX” is appears
XXXXXXXXXX: Various internal RAM (Switching with [M] [m] button on the 

remote commander)

EEPROM debug

EEPROM

When [,] button on the remote commander is pressed, the message “****   

XX” is appears
****: EEPROM address, XX: EEPROM data

Protector on/off

PROTECTOR

When [,] button on the remote commander is pressed, the message “ON” 

or “OFF” is appears

Audio swap

SWAP MODE

When [,] button on the remote commander is pressed, the message 

“XXXXXXXXXX” is appears
XXXXXXXXXX: audio swap mode
Switching with [M] [m] button on the remote commander

Volume value display (FL/FR)

F****RXXXX

****: Front L-ch volume value, XXXX: Front R-ch volume value (for design 
evaluation)

Volume value display (SL/SR)

S****AXXXX

****: Surround L-ch volume value, XXXX: Surround R-ch volume value (for 
design evaluation)

Volume value display (CT/SW)

C****WXXXX

****: Center volume value, XXXX: Sub woofer volume value (for design 
evaluation)

Volume value display 
(SBL/SBR)

B****BXXXX

****: Surround back L-ch volume value, XXXX: Surround  back R-ch volume 
value (for design evaluation)

DAC mute information disclosure 1

U XXXXXXXX

Display of module information to demand muting in system controller (for 
design evaluation)

DAC mute information disclosure 2

L XXXXXXXX

Display of module information to demand muting in system controller (for 
design evaluation)

FL display duty change

DUTY

When [,] button on the remote commander is pressed, the message “XXX” 

is appears
XXX: Duty value of FL display (1% to 100%) (for design evaluation)

Procedure:
1.  Turn on the set.
2.  Input the following signal from signal generator to FM antenna 

input directly.

Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation 

: 75 kHz

Modulation 

: 1 kHz

ANT input 

: 35 dBu (EMF)

Note:  Use 75 ohm coaxial cable to connect signal generator and the set. 

You cannot use video cable for checking.

 

Use signal generator whose output impedance is 75 ohm.

3.  Set to FM tuner function and scan the input FM signal with 

automatic scanning.

4. Confi rm that input frequency of A, B and C are detected and 

automatic scanning stops.

When the station signal is received in good condition, automatic 
scanning stops.

SOFTWARE  VERSION  DISPLAY  MODE
The software version is displayed.
Procedure:
1.  While pressing the [TONE MODE] and [MUSIC] buttons, 

press the [POWER] button to turn on the main power.

2.  The message “M.Ver X.XX” appears.
 

Each time the [DISPLAY] button is pressed, “H.Ver X.XX”, 
“V.Ver X.XX”, “G.Ver X.XX”, “F.Ver X.XX” and “S.Ver 
X.XX” this order, and returns to the “M.Ver X.XX” displayed.