48
New Brunswick Scientific
User’s Guide
8. Ensure that the board-to-board connectors are properly positioned. Snap the
new
TEMPERATURE CONTROL BOARD
onto the
MAIN CONTROL BOARD
.
Verify that no pins are visible and the board is secure.
9. Replace the three nylon washers. Replace the three ¼ inch screws. Use a
Phillips (+) head screwdriver to tighten the screws.
10. On the
TEMPERATURE CONTROL BOARD
, reconnect the harness wires to
connectors
J101
,
J102
,
J103
and
J104
. Ensure that all connectors are properly
positioned and secure. Verify that no pins are visible.
11. Lift up hinged front panel and replace the three screws. Use a Phillips (+)
head screwdriver to tighten the screws.
12. Close the door of the shaker.
13. Reconnect the
POWER
CORD
to the electrical outlet.
9.8.3
Replacing the Main Control Board
To replace the
MAIN CONTROL BOARD
:
1. Set
the
ON/OFF POWER
Switch to
OFF
.
2. Disconnect
the
POWER CORD
from the electrical outlet.
3. Before you can gain access to the front panel, open the door of the shaker. The
door
must
be open all the way.
4. Use a Phillips (+) head screwdriver to unscrew the three screws that attach the
hinged front panel to the housing. Gently lay down the front panel.
As you look down, the
MAIN CONTROL BOARD
of the Innova 4200 is on the right
side of the panel. The
TEMPERATURE CONTROL BOARD
lies on top of the
MAIN
CONTROL BOARD
(
see Figure 18 above
). You must remove the
TEMPERATURE
CONTROL BOARD
before you can remove the
MAIN CONTROL BOARD
.
5. Disconnect the harness wires from
CONNECTORS
J101
,
J102
,
J103
and
J104
on the
TEMPERATURE CONTROL BOARD
.
6. Use a Phillips (+) head screwdriver to unscrew the three screws. Remove the
screws and then remove the nylon washers.
7. Use caution, and disconnect the
TEMPERATURE CONTROL BOARD
from the
MAIN CONTROL BOARD
. Apply force perpendicular to the plane of the board.
Do not
lift from one end. Set the
TEMPERATURE CONTROL BOARD
aside.
8. On
the
MAIN CONTROL BOARD
, disconnect the harness wires from
CONNECTORS J1
and
J2
.
9. Remove the five
HEX SPACERS
and the five 5/16 inch
HEX NUTS
.
10. Remove the
GREEN GROUND WIRE
.
11. Remove the
KEY PAD GROUND LEAD
.
12. Remove two screws that fasten the
HEAT SINK
to the front panel.
13. Lift the board slightly and disconnect the
KEY PAD RIBBON CONNECTOR
from
J4
.
Summary of Contents for innOva 4200
Page 2: ...2 New Brunswick Scientific User s Guide...
Page 57: ...57 Innova 4200 M1233 0053 User s Guide Figure 21 Electrical Schematic Quadrant A...
Page 58: ...58 New Brunswick Scientific User s Guide Figure 22 Electrical Schematic Quadrant B...
Page 59: ...59 Innova 4200 M1233 0053 User s Guide Figure 23 Electrical Schematic Quadrant C...
Page 60: ...60 New Brunswick Scientific User s Guide Figure 24 Electrical Schematic Quadrant D...
Page 66: ...66 New Brunswick Scientific User s Guide Figure 30 100V Power Schematic Overview...
Page 67: ...67 Innova 4200 M1233 0053 User s Guide Figure 31 100V Power Schematic Quadrant A...
Page 68: ...68 New Brunswick Scientific User s Guide Figure 32 100V Power Schematic Quadrant B...
Page 69: ...69 Innova 4200 M1233 0053 User s Guide Figure 33 100V Power Schematic Quadrant C...
Page 70: ...70 New Brunswick Scientific User s Guide Figure 34 100V Power Schematic Quadrant D...
