Electrical Check - Sony STR-DG820 Service Manual

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.
Items Display
Model/Destination change MODEL
Main micom version display M.Ver X.XX
HDMI mico mversion display H.Ver X.XX
DSP serial fl ash version display S.Ver X.XX
HD update HD UPDATE
HDCP key read HDCP KEY
Auto cal mic test SP OUT
FL display fonts test FL FONT
FL display test All segments turn on
DSP halt DSP HALT
Super reset RESET
RAM watch menu RAM WATCH
EEPROM debug EEPROM
Protector on/off PROTECTOR
Audio swap SWAP MODE
Volume value display (FL/FR) F****RXXXX
Volume value display (SL/SR) S****AXXXX
Volume value display (CT/SW) C****WXXXX
Volume value display
B****BXXXX
(SBL/SBR)
DAC mute information disclosure 1 U XXXXXXXX
DAC mute information disclosure 2 L XXXXXXXX
FL display duty change DUTY
STR-DG820
Remark
When [,] button on the remote commander is pressed, the message "G82
** XXX" is appears
**: Destination
XXX: FIX or AUT
X.XX: System controller software version
X.XX: HDMI controller software version
X.XX: Serial fl ash software version
When [,] button on the remote commander is pressed, the message "ON"
or "OFF" is appears
When [,] button on the remote commander is pressed, the message "ON"
or "OFF" is appears
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
When [,] button on the remote commander is pressed, the message
"0X**=X" is appears
**: 20 to FF, X: character
Each time [DISPLAY] button to change as follows
all on t test pattern 1 t test pattern 2 t all off t all on
When [,] button on the remote commander is pressed, the message "ON"
or "OFF" is appears
Not used for the servicing
When EEPROM initialization is required, perform the "memory clearing
mode"
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
When [,] button on the remote commander is pressed, the message "****
XX" is appears
****: EEPROM address, XX: EEPROM data
When [,] button on the remote commande is pressed, the message "ON"
or "OFF" is appears
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
****: Front L-ch volume value, XXXX: Front R-ch volume value (for design
evaluation)
****: Surround L-ch volume value, XXXX: Surround R-ch volume value (for
design evaluation)
****: Center volume value, XXXX: Sub woofer volume value (for design
evaluation)
****: Surround back L-ch volume value, XXXX: Surround back R-ch volume
value (for design evaluation)
Display of module information to demand muting in system controller (for
design evaluation)
Display of module information to demand muting in system controller (for
design evaluation)
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)
FM AUTO STOP CHECK
signal
generator
set
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 : 1 kHz
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.
13 13
SECTION 5

ELECTRICAL CHECK

STR-DG820