Assembly drawing
5.1.3 Adjustment and Test Points
There are no test points designed specially for mother board. To test certain power or signal, use the touch points of connectors directly.
On the mother board with the Debug Serial Communication Port (DSCP) configured, the configuration of COM port is implemented by several connection matrices. See the following introduction for connection method.
By adjusting JP1 to JP3, the J2 COM port can support the following 5 debugging modes (all via PC COM port).
1. Data board COM 3: debugging the data board function
2. Data board COM 0: debugging the data board’s function of controlling the drive board 3. Drive board COM: debugging the drive board function
4. Data board COM 1: debugging the data board’s function of controlling the autoloader board
5. Autoloader board COM: debugging the function of autoloader board
Notice: In case of functions 2 or 3 (4 and 5 are the same), do not connect the drive board and the data board at the same time. Namely, in case of function 2, do not connect the drive board, and in case of function 3, do not connect the data board.
JP1 and JP2 respectively connect UART1, 3, 0 to the input of the RS-232 transceiver. JP1 can also be used for selecting the UART1 COM direction. JP2 connects interface signals of the data board or the autoloader board to the RS-422 transceiver. (U2 in Figure 5-3)
See Table 5-42 for configuration details.
Table 5-42 Configuration details
Debugging COM port JP1 JP2
Data board UART1 Put jumpers on pins 9-10 and 11-12.
Put jumpers on pins 1-2,,3-4,,5-6, and,7-8..
Autoloader board COM
Put jumpers on pins 9-10 and 11-12.
Put jumpers on pins 9-10,11-12,13-14,and 15-16.
Data board UART3 Put jumpers on pins 13-14 and 15-16.
No jumpers.
A male or female receptacle can be installed at J2. Four cable types can be supported, as shown in the following table.
Table 5-43 COM port receptacle and cable selection
Connector cable JP3
Serial cable with female connectors on both ends, signals not intercrossed
3-4, 7-8, 13-14, 15-16 DB9 male
receptacle
(straight or 90°
installation)
Serial cable with female connectors on both ends, signals intercrossed; namely the COM cable
3-4, 7-8, 9-10, 11-12
Serial cable with a female connector on one end and a male connector on the other end, signals not intercross;
namely the COM extension cable
1-2, 5-6, 13-14, 15-16 DB9 female
receptacle
(straight or 90°
installation)
Serial cable with a female connector on one end and a male connector on the other end, signals intercross
1-2, 5-6, 9-10, 11-12
JP4 needs to be configured as shown in the following table when the MCU JTAG of the drive board or the autoloader board is to be connected to J3.
Table 5-44 Connection matrix of multi-functional JTAG port
JTAG function JP4
Connect MCU JTAG of autoloader board
No jumpers
Connect MCU JTAG of drive board
Put jumpers on pins 1-2, 3-4, 5-6 and 7-8.
Note: the mother board does not provide a fixed connection to the JTAG port of the autoloader MCU. If you need to update the autoloader MCU on the analyzer, connect the J11 and J3 receptacles using the cable dedicated for autoloader update before updating on PC using the client update software. The dedicated cable is provided to the service and manufacture personnel, not as an accessory of the analyzer.
5.1.4 Removal
Purpose
The mother board is unlikely to be damaged. But in case you need to replace it, follow the steps below.
Tools
107 cross-headed screwdriver 107 flat-headed screwdriver
Removal
Follow these two procedures to disassemble the mother board:
To remove the mother board from the analyzer:
1. Power off the analyzer.
2. Unplug the power cable and the LAN cable from the back of the analyzer.
3. Remove the top cover and front cover of the analyzer 4. Remove the data board and the drive board.
5. Disconnect all cables from the mother board.
6. Use the 107 cross-headed screwdriver to remove the four M4X8 small panhead screws fixing the bracket.
7. Pull the bracket to remove it.
Figure 5-4 Disassembly diagram of the mother board-1
1 ―――Bracket 2 ―――Mother board
3 ―――M4X8 panhead screw
To disassemble the mother board:
1. Use the 107 cross-headed screwdriver to remove the fourteen M3X6 cross-headed panhead screws on the mother board.
2. Pull the mother board towards the panel by a certain distance, remove the LAN port connector from the metal plate and take out the mother board.
Installation
Install the mother board as per the above-mentioned procedures in the reverse order.
Note: Since the mother board has many connectors, pay attention to the number indicated on the connector to avoid wrong connection. The design of the mother board has included certain error-proof measures. Generally speaking, wrong connection will not lead to safety issues, yet the whole unit cannot function properly
Verification
1. Power on the analyzer, the fan at the back of the analyzer should run normally. Use a multimeter to measure the voltage of D+5V, P+12V, P+24V, A+/-12V, AC120V, and all measurements should be within normal ranges.
2. Power indicators of the boards are on, showing that the mother board is functioning correctly.
5.1.5 Troubleshooting
Since the function of the mother board is to realize power distribution and centralized wiring, a failure in the mother board usually takes the form of hardware system failure.
Table 5-45 Troubleshooting
Failure Cause Recommended Action
Abnormal voltage detected
cable not properly connected to power connector
Check connectors J12, J13, J35, J37;
If the connection is normal, use a multimeter to check if the voltage of each power source indicated on the mother board is correct.
Fan not running. Fan damaged or no power supply
Check connector J34;
Check the P12V indicator on the drive board
Communication failure of autoloader board
Connector J4 abnormal..
Connector J36 abnormal..
Check connector J4 Check connector J36
Pressure control abnormal
Connector J15 abnormal Check connector J15
Volumetric abnormal Connector J15 abnormal Check connector J15 Liquid level inspection Connector J16 abnormal Check connector J16
abnormal, misinform Laser not light or laser current detected abnormal
Connector J17 abnormal Check connector J7
Pre-amp board has no power or work abnormally.
Connectors J9 and J10 abnormal
Check connectors J9 and J10
Motor not active Motor drive cable not properly connected .
Check connectors J22,J23,J24, and 25
Valve not active Valve drive cable not properly connected.
Check connectors J30,J31,J32 and J33
Pump not active Pump drive cable not properly connected
Check connector J29
Temperature control fails.
Temperature sensor not properly connected.
Check connector J14