Sony DSR-300 Service Manual page 106

2-15. DC-DC CONVERTER VOLTAGE
CONFIRMATION
Output voltages of the dc-dc converter can be checked at
the test points on the MB-753 board and front MIC
connector.
. Connector CN13 of MB-753 Board
To measure the voltages, remove the four screws and
open the rear panel.
Check point
Pin 1
Pin 3
Pin 7
Pin 9
Pin 13
Pin 15
Pin 17
Pin 19
Pin 21
Pin 25
Pin 29
. Front MIC Connector
Check point
Pin 2/Pin 1 (GND)
2-30
Voltage
SWD EXT DC
UNREG GND
+3.4 V
+3.1 V
_5 V
+5.0 V
+5.3 V
+6.6 V
+9.0 V
+6.0 V
+16.1 V
Voltage
+48 V
DC-DC
converter
CN13
CN13
1
Check point
2 1
3
GND.
(External view)
MB-753 board
29
DSR-300/P(E)/V1