Control Board Set Replacement
3D3605R/4D3605R
Application Board (Only) Replacement
PCB605R
Processor Board (Only) Replacement
3D3620R/4D3620R
Reference: Use this instruction with replace-
ment part 3D3605R, 4D3605R,
PCB605R, 3D3620R, or
4D3620R.
Tools Needed: Phillips screwdriver, flat-
bladed screwdriver, static
grounding (earthing) wrist
strap (included).
Warning-Hazardous Voltage
Warning-Internal components may
be damaged by static electricity.
CAUTIONS:
• Power cord must be disconnected
to prevent electric shock.
• Never unpack, touch or handle any
integrated circuit without wearing
a grounding (earthing) strap to
minimize your static charge.
• Instrument calibration and all cus-
tomized settings will be lost when
the main control board, board set,
or processor board is replaced.
Therefore, make sure the current
sample and block probe bin num-
bers and the sample stir amplitude
are recorded in the service log so
that you can reset these vital num-
bers into the replacement board.
The following instructions have been pre-
pared to cover several different replacement
scenarios. Please read carefully and select the
appropriate set of instructions for your situa-
tion.
GENERAL INSTRUCTIONS:
1. Record current sample and block probe
bin numbers, sample stir amplitude, and
any other customized settings that may
need to be reset after this procedure.
2. Turn off the power and unplug the instru-
ment.
3. Remove the screws securing the instru-
ment cover, and remove the cover (see
below):
The following instructions refer to 4D3
cryoscopes with suffix "A" or later, and
to all 3D3 osmometers:
a. Remove the two sets of screws from
the side panels and the two screws
from the rear panel.
b. Slide the instrument cover up and off.
The following instructions refer to 4D3
cryoscopes without a suffix:
a. Remove the heat transfer fluid from
the front cover.
For additional information or technical assistance,
please contact Advanced Instruments Hot-Line
®
Service Center (U.S. 1-800-225-4034, outside
North America +US 1-781-320-9000).
4D3P620 Rev3
(4D35 Service Manual)
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