Data board key definition
5.2.4 Disassembly and assembly method
Interrupt input signals 5 of CPU
91 TP105 #MCF_IRQ
6
Interrupt input signals 6 of CPU
92 TP106 #MCF_IRQ
7
Interrupt input signals 7 of CPU
AGND, TP10-21, TP38, TP44, TP70, TP73, TP77, TP88, TP90, TP92-94 and TP107-116 are connected to the GND network and usually used as the connecting point of the oscilloscope probe grounded end.
Data board key definition
Table 5-55 Key definition
No. Function
S12 Manually reset the main CPU
5.2.4 Disassembly and assembly method
Purpose
Damaged data board needs to be replaced by a new one..
Tools
107 cross-headed screwdriver
Remove the data board from the main unit:
1. Shut down the analyzer.
2. Remove the left door.
3. Remove the top cover board
4. Use the 107 cross-headed screwdriver to remove the two cross-headed bolts (M3X6) from the upper cover of the shielding box, and then remove the upper cover.
5. Disconnect the two power cables connected to the data board.
6. Use your hand or cross-headed screwdriver to remove the two hand-tightened screws from the bracket.
7. Use both of your hands to flip outward the two latches on both sides of the data board, and then draw the data board out.
Figure 5-11 Disassembly diagram of data board-1
1---Upper cover of the shielding box of data board
2---Cross-recessed panhead screw M3x6 (with washer)
3---Data board 4---Hand-tightened screws
Further disassembly of the data board
1. Use the 107 cross-headed screwdriver to remove the 5 cross-headed panhead screws (M3X6) from the data board.
2. Remove the data board from the bracket.
3. Use the 107 cross-headed screwdriver to remove the 2 panhead screws (M3X8) and 6 socket cap screws (M3X12) from the lower cover of the shielding box.
Figure 5-12 Disassembly diagram of data board-2 1---Cross-recessed panhead screw
M3x6 (with washer)
2---Data board
3---Bracket 4---Lower cover of the shielding box of data board
5---Panhead screw M4X8 6---Socket cap screws M3X12
Assembly
Assemble the data board as per the above-mentioned steps in the reverse order.
Verification
1. Power indicators D20, D17, D22, D21 and D51 turns on.
2. Indicator D49 turns on after FPGA initialization.
3. Indicator D47 and D48 turn on and D45 flashes after network is enabled.
5.2.5 Troubleshooting
the particular error according to the certain symptom and remove it accordingly.
Table 5-56 Troubleshooting of analog part
No. Error Character Possible Cause Recommended action Improper cable
connection with the mother board or disconnection caused by a broken cable
Reconnect the cable or change a new cable
Improper 12V power supply sent by the mother board or the power board
Check whether the proper power supply is sent by the mother board or the power board
1 12V power supply error
The voltage of the +12V test point exceeds the range of 12±0.6V; or the ripple noise is greater than 50mV.
Inductor L16 or capacitor C111, C95 and C88 are damaged or not properly soldered.
Re-solder or change the component
Improper cable connection with the mother board or disconnection caused by a broken cable
Reconnect the cable or change a new cable
Improper -12V power supply sent by the mother board or the power board
Check whether the proper power supply is sent by the mother board or the power board
2 -12V power supply error
The voltage of the -12V test point exceeds the range of -12±0.6V; or the ripple noise is greater than 50mV.
Inductor L18 or capacitor C112, C94 and C87 are damaged or not properly soldered
Re-solder or change the component
3 +5V power supply error
The voltage of the +5V test point exceeds the range of +5±0.25 V
The +5V relating circuit is rosin jointed; the power supply’s
impedance to the
ground is decreased; or power chip U14 is damaged
First ensure the +12V power supply works normally. Then, check the +5V relating circuit, re-solder or change the component.
4 -5V power supply error
The voltage of the -5V test point exceeds the range of -5±0.25 V
The -5V relating circuit is rosin jointed; the power supply’s
impedance to the
ground is decreased; or power chip U12 is damaged
First ensure the -12V power supply works normally. Then, check the -5V relating circuit, re-solder or change the component.
5 +2.5V reference power supply error
The voltage of the VR_MON or VR_H test point exceeds the range of 2.5±0.125 V
If the +5V (AVDD) power supply works normally, then the problem occurred probably because power chip U45 or U43, and its peripheral components are damaged or not properly soldered.
Check the relating circuit;
re-solder or change the component
The boost circuit works improperly
Check the chip U72, U70, U71 and their peripherals for any rosin joint or damage 6 +56 constant
current drive power supply error
The voltage of the VCONST test point exceeds the range
of 56±3V The 56V
voltage-regulator diode is damaged
Re-solder or change the component
7 +56V monitoring voltage error
The voltage of the +56VM test point exceeds the range of 1.37±0.2V
If the +56V power supply works normally, then the problem occurred probably because something is wrong with the monitoring circuit..
Check the U39 and relating components; re-solder or change the component
8 +12V monitoring voltage error
The voltage of the +12VM test point exceeds the range of 1.8V-2.2V
The relating circuit is not properly soldered; the power supply’s impendence to the
ground is decreased;
Something is wrong with the power IC or the corresponding AD.
If the +12V power supply works normally, check U40 and the relating components, re-solder or change the component.
9 -12V monitoring voltage error
The voltage of the -12VM test point exceeds the range of 2.2V-2.6V
The relating circuit is not properly soldered; the power supply’s impendence to the
ground is decreased;
Something is wrong with the power IC or the corresponding AD.
Check U40 and the relating components, re-solder or change the component under the circumstance that the -12V power supply works normally diode abnormal or boost circuit error
Check whether the constant current source control signals are normal. See the foregoing troubleshooting to remove the error of 56V circuit.
10 RBC aperture voltage
monitoring error
The value of the aperture voltage exceeds the range of 10V-14V
Bath not properly wired; clogging.
Check the bath wiring;
perform the unclogging
Monitoring circuit error
Components of the monitoring circuit are not properly soldered,
or the corresponding AD
works abnormally.
Check whether the relating circuit or AD works normally.
11 WBC aperture voltage
monitoring error
Same as point 10 Same as point 10 Same as point 10
HGB light error or the gain
Check whether HGB light is on, or adjust the gain multiple of HGB channel
12 HGB background voltage abnormal
HGB value of the test point exceeds the normal range (4.2V-4.8V) The
Check whether the corresponding AD works normally.
13 FS background voltage
monitoring error
The value of the FSBASE test point exceeds the normal range (0-400mv)
The flow cell is dirty, or something is wrong with the corresponding monitoring circuit error.
Clean the flow cell in time, or check whether the U38 and the corresponding AD chip U44 work normally.
14 Laser diode drive current monitoring error
The value of the LASER test point exceeds the range of 1.0-3.0V.
Something is wrong with the current value sent by the laser control board
Check whether the cable is properly connected to the laser control board and whether the monitoring value sent from the laser control board is normal
Data board
Check whether the operation amplifier U38 and the corresponding AD chip U44 work normally.
15 RBC aperture zapping error
No sound is heard and no bubbles are produced when zapping the bath
Something is wrong with the zapping voltage supplied by the power board, or with the part of the data board that controls zapping.
Ensuring the wiring of the bath is correct, then check whether the AC120V zapping power of the power board is proper, or check whether the zapping control signals are effective.
16 WBC aperture zapping error result, or the result displays “***”
Bath wiring error, analog part channel error, AD collection error or algorithm
identification error
Use a oscilloscope to check whether the analog channel can output correct signals. If no signal is detected,, check the amplification stage by stage, and check the AD collection and data uploading as well.
First ensure the bath and the fluidics work normally, and then check the shielding and
grounding, check components (such as
resistors) of the constant current source, or check the resistor-capacitor and operation amplifier of the signal conditioning channel.
Table 5-57 Troubleshooting of digital part
No. Error Causes and solutions
1 System startup failed Possible causes: input power supply error, including improper power cord connection, abnormal power supply voltage on each board, flash chip error that causes the operating system to fail to be downloaded into DDR SDRAM; DDR SDRAM error that causes the system to fail to operate; Or system clock abnormal.
Solutions: press the S12 key to reset the system, and then check whether the error still exists; check whether the power indicator D51 is on; check whether the fuse F4 is broken; use a multimeter to check the voltage of each power supply; use an oscilloscope to check whether the clock crystal oscillator output X2 is normal.
2 Network communication failed Possible causes: network connection abnormal;
using non-standard network cable; network chip damaged, etc.
Solutions: directly connect the analyzer and PC with the specified shielding-cross network cable. If nothing is wrong with the network connection and the settings, then check the crystal oscillator X3 output by an oscilloscope. If you doubt the network chip U36 is damaged, replace it with a new one.
3 Abnormal communication with UART of autoloader board
Possible causes: improper connection; interface chip U66 damaged.
Solutions: check and make sure the connection is proper; check whether the interface signals are normal by an oscilloscope.
4 volumetric board signals, laser shielding box status and right door status can not be detected
Possible causes: improper connection; interface chip U74 damaged.
Solutions: check and make sure the connection is proper; check the interface signals by an oscilloscope.
6 Events of Aspirate Key, Count Key and Compartment Door Open Key can not be detected, or the buzzer and indicator on the indicator board are out of control.
Possible causes: improper connection; interface chip U67 damaged.
Solutions: check and make sure the connection is proper; check the interface signals by an oscilloscope.