SONY BG-3R Service Manual
SERVICE MANUAL
BG3R
CHASSIS
MODEL COMMANDER DEST. CHASSIS NO.
KV-AR25M61 RM-995 GE SCC-U52G-A
MODEL COMMANDER DEST. CHASSIS NO.
TRINITRON
®
COLOR TV
KV-AR25M61
RM-995
SECTION 4
CIRCUIT ADJUSTMENTS
4-1. ADJUSTMENTS WITH COMMANDER
Service adjustments to this model can be performed using the
supplied Remote Commander RM-995.
a. ENTERING SERVICE MODE
With the unit on standby
n
[DISPLAY] n 5 n VOL (+) n [POWER]
This operation sequence puts the unit into service mode.
The screen display is :
Device
Name
Suffix No
(OEM Code)
Software version Total Power-On time (hours)
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press [POWER] button on the commander),
then press [POWER] button again, hereupon it becomes TV mode.
c. METHOD OF WRITE INTO MEMORY
1) Set to Service Mode.
2) Press [1] (UP) and [4] (DOWN), to select the adjustment.
4) Press [MUTING] button to indicate WRITE on the screen.
5) Press [0] button to write into memory.
d. MEMORY WRITE CONFIRMATION METHOD
1) After adjustment, pull out the plug from AC outlet, and then
plug into AC outlet again.
2) Turn the power switch ON and set to Service Mode.
3) Call the adjusted items again to confirm adjustments were made.
1, 4 Select the adjustment item.
↓
3, 6 Raise/lower the data value.
↓
Item No
00
1.0C
Item
Name
Data Mode
HPS SERVICE 501C pGEO
59 7F 000A0602S
Marking of new NVM
PAL,SECAM:50
NTSC :60
[MUTING] Writes.
↓
- Executes the writing.
4-2. ADJUSTMENT METHOD
Item Number 00 of device GEO
This explanation uses H-Position as an example.
1. Select “GEO 00 HPS” with the 1 and 4 buttons.
2. Raise/lower the data with the 3 and 6 buttons.
3. Select the optimum state. (The standard is 1F for PAL
reception.)
4. Write with the [MUTING] button. (The display changes to
WRITE.)
5. Execute the writing with the - button. (The WRITE
display will be changed to red color while excuting, and
back to SERVICE.)
Example on screen display :-
GEO 00
602S 1.0C
GEO 00
602S 1.0C
Write with [MUTING]
GEO 00
602S 1.0C
Write executed with -
1F 50HPS SERVICE
7F 0 000A59
1F WRITE 50HPS
7F 0 000A59
1F 50HPS WRITE
7F 0 000A59
GREEN
Adjusted with 3
and 6 buttons.
GREEN
RED
The WRITE display
then the display
returns to green
SERVICE.
Use the same method for all Items. Use 1 and 4 to select the
adjustment item, use 3 and 6 to adjust, write with [MUTING],
then execute the write with -.
Note : 1. In [WRITE], the data for all items are written into
memory together.
2. For adjustment items that have different standard data
between 50Hz or 60Hz, be sure to use the respective
input signal after adjustment.
7, - All the data becomes the values in memory.
8, - All user control goes to the standard state.
5, - Service data initialization (Be sure not to use
usually.)
[MUTING], - Write 50Hz adjustment data to 60Hz, or vice
versa.
2, - Copy and write all data.
– 16 –
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