Electrical Adjustments - Sony STR-DB2000 Service Manual
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Also See for STR-DB2000:
- Easy setup manual (2 pages) ,
- Service manual (158 pages) ,
- Operating instructions manual (85 pages)
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Q Q
ELECTRICAL ADJUSTMENTS
3 7 6 3 1 5 1 5 0
DC OFFSET ADJUSTMENT
Condition:
function:
MULTI CH 2
input signal: no signal (no load)
volume:
0 dB
Connection
digital voltmeter
D. AMP board
TM1710 (TM1730, 1740, 1750, 1760, 1770) 3 pin
TM1710 (TM1730, 1740, 1750, 1760, 1770) # pin
Procedure:
1. Connect a digital voltmeter to the TM1710 (TM1730, 1740,
1750, 1760, 1770) on the D. AMP board.
2. Press the
button to turn on the main power.
I/1
3. Adjust the RV111 (141, 161, 181, 211, 241, 281) on the MULTI-
VIDEO board so that the digital voltmeter reading is ±20 mV.
Adjustment and Connection Location: see page 15
T E
L
1 3 9 4 2 2 9 6 5 1 3
w w w
.
SECTION 5
OSD ADJUSTMENT
Connection
frequency counter
MULTI-VIDEO board
CN1241 pin 1 or pin 2
Procedure:
1. Short the CN1241 pin 4 on the MULTI-VIDEO board to the
+
GND.
–
2. Connect a frequency counter to the CN1241 pin 2 on the
MULTI-VIDEO board.
3. Press the
I/1
button to turn on the main power.
[MAIN MENU]
4. Press the
button to display "CUSTOMIZE ".
[MENU]
5. Turn the
jog clockwise to display "OSD COLOR
[NTSC]". If "OSD COLOR [PAL]" is displayed, turn the
jog counterclockwise.
[MENU]
6. Turn the
jog clockwise to display "OSD H.POSI [X]".
7. Adjust the CT1261 (STR-DA2000ES) or CT1271 (STR-
DB2000) so that the frequency counter reading is 3.57954 MHz.
[MENU]
8. Turn the
jog counterclockwise to display "OSD
COLOR [NTSC]".
[--/+]
9. Turn the
jog clockwise to display "OSD COLOR [PAL]".
[MENU]
10. Turn the
jog clockwise to display "OSD H.POSI [X]".
11. Adjust the CT1272 so that the frequency counter reading is
4.43361 MHz.
12. Press the
button to turn off the main power.
I/1
13. Connect a frequency counter to the CN1241 pin 1 on the
MULTI-VIDEO board.
14. Press the
I/1
button to turn on the main power.
[MAIN MENU]
15. Press the
button to display "CUSTOMIZE".
[MENU]
16. Turn the
jog clockwise to display "OSD V.POSI [X]".
17. Adjust the CT1241 so that the frequency counter reading is 7.20
MHz.
Note: The steps 5 and 8 to 11 should be performed to STR-DB2000.
Adjustment and Connection Location: see page 15
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8
Adjustment and Connection Location:
– D. AMP BOARD (Conductor Side) –
+
–
[--/+]
Front
Speaker
L-ch
Q
Q
+
–
3
7
6
3
TM1710
– MULTI-VIDEO Board – (Component Side)
CT1241
4
1
CT1271
(STR-DB2000)
CT1272
u 1 6 3
(STR-DB2000)
.
15
15
http://www.xiaoyu163.com
2
4
9
9
8
Front
Surround
Surround
Center
Speaker
Speaker
Speaker
Speaker
R-ch
L-ch
R-ch
+
–
+
–
+
–
+
–
1
5
1
5
0
8
9
2
4
TM1730
TM1740
TM1750
CT1261
(STR-DA2000ES)
CN1241
RV281
RV181
RV161
RV241 RV141 RV211 RV111
(STR-DA2000ES)
m
c o
STR-DA2000ES/DB2000
2
9
9
Surround back
Surround back
Speaker
Speaker
L-ch
R-ch
+
–
+
–
9
8
2
9
9
TM1760
TM1770
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