Hitachi 902 Service Manual

Text of Hitachi 902 User Guide:

• Hitachi 902, 3 - 4 3.4 WASH 3.4.1 Details of WASH Processing Step No. Contents of Processing Reference Document 1) Start from MAINTENANCE screen Screen specifications 2) See next page 3) 4) When mechanism operates, its operation is checked. If abnormal, alarm is indicated. Alarm will be saved into the alarm FD. Screen specifications Alarm code table FD specifications Remarks: (1) Start method and resulting action (a) Specify DAILY. All cells, probes (S and R), stirrer and ISE mechanism are washed. (b) Specify reaction cell. (c) Specif

• 2 - 78 2.6.4 Cumulative Instrument Operation List 1. Routine; Routine sample 3. Cont.; Control serum 2. Calib.; Calibration solution 4. STAT; Stat sample Total number of tests Number of analyzed samples

• Hitachi 902, 9 - 8 [Alarm check] 1. Checks of S1ABS, Dup, STD, SENS and CALIB. ??? are performed. 2. If the result of calibration is not monotone increasing or monotone decreasing (in the case shown in Fig. 1), the alarm "calculation disabled" is indicated. This alarm is also indicated if absorbance is the same between different standard numbers (see Fig. 2). Fig. 1 Fig. 2 Concentration Calculation in Polygonal-Line Calibration 1. Concentration is calculated in the test whose CALIB. TYPE on the chemistry parameter screen is polygonal line. 2. Processing flow (1) K value is calculate

• Hitachi 902, 7 - 45 7.5.7 Photometer Check Function : Absorbances at 12 wavelengths are measured and output onto the p rinter together with the previously measured data. Required time: 1 min 50 sec (reset 20 sec + 18 sec/cycle × 5 cycles) Processing No. Details of Processing Reference Document 1) Start from MAINTENANCE screen Screen specifications 2) Refer to the next page. 3) Absorbances at 12 wavelengths (main/sub) are printed out together with previous ones stored in CRAM. The recent result data is stored in CRAM. Photometer report data check 4) At execution of photo

• Hitachi 902, 2 - 2 Category Alarm Name Category Alarm Name 75 MOTOR CONT. 114 ACI ERROR 76 MOTOR TOUT 115 77 116 78 117 79 118 80 119 FD WRITE ? 81 120 FD READ ? 82 121 NO FD 83 STANDARD ? 122 84 CALIB. 123 FD PROTECT 85 CALIB. SD ? 124 86 SENS. ? 125 PRINTER 87 126 SYSTEM I/F 88 127 89 128 90 ISE LEVEL 129 91 ISE NOISE 130 WATER EXG. 92 ISE PREP. 131 93 ISE SLOPE 132 94 ISE I. STD 133 95 REF. SHORT 134 96 TWIN TEST ? 135 97 136 98 CHEM. PARAM ? 137 99 CLB. PARAM ? 138 100 VOLUME ? 139 101 140 PANEL I/F 102 141 REAGNT ? 103 CMP. TEST ? 142 104 S. INDEXES ? 143 105 144 106 ON BOARD ? 145 CELL C. O.

• Hitachi 902, 15 - 8 15.3.2 Interface Connector Pin Arrangement for Interface Return Pin No. Signal Pin No. Signal Name 1 2 MODE SELECT (3) 4 N.C. 5 6 N.C. 7 8 INDEX 9 10 DRIVE SELECT 0 11 12 DRIVE SELECT 1 13 14 N.C. 15 16 MOTOR ON 17 18 DIRECTION SELECT 19 20 STEP 21 22 WRITE DATA 23 24 WRITE GATE 25 26 TRACK 00 27 28 WRITE PROTECT 29 30 READ DATA 31 32 SIDE ONE SELECT 33 34 READY NOTE: (3) indicates a key pin. Connector Pin Arrangement for Interface Connector Pin Arrangement for DC Power Supply Pin No. Power Supply Specification 1 +5 V 2 +5 V RETURN 3 +5 V RETURN 4

• Hitachi 902, 3 - 9 (c) Evasion of sample carry-over due to sample probe and washing for evasion (I) Condition for carry-over evasion Sample carry-over is prevented by washing the sample probe. (II) Method of carry-over evasion The sample probe is washed at the timing just before pipetting the sample whose measurement includes a sample carry-over washing-specified test (between sample pipettings). The sample probe is washed by the following method. The determined volume (65 µL) of detergent is aspirated from the specified washing cup on the sample disk and discharged into the washing bath where the

• Hitachi 902, 5 - 0 5.ISE 5.1 Functional Specifications of Model 902 ISE..............................................5-1 5.2 Outline of ISE Unit......................................................................................5-2 5.3 Configuration of ISE Hardware...................................................................5-5 5.4 ISE Measurement Sequence.....................................................................5-6 5.5 ISE A/D Conversion..................................................

• 14 - 10 14.2.7 Reagent Disk (cooling unit) (1) Open the side panel L, and drain water manually from the circulating pump intake header. (2) Remove the main unit cover. (3) Remove the table support R1. (4) Remove the reagent jacket retaining screws. (5) Open rear plates A, B and side panel R, and remove cooling unit retaining screws and connectors. (6) While lifting the reagent jacke

• Hitachi 902, 5 - 6 5.4 ISE Measurement Sequence For the dilution bath in ISE measurement, be sure to use two connected reaction cuvettes. (1) Sample Pipetting Cuvette no. n + 2 n + 1 n Cycle no. 11 12 13 Stop no. 1 1 1 (2) Diluent Pipetting + Water + Stirring Cuvette no. n + 2 n + 1 n Cycle no. 11 12 13 Stop no. 3 3 3 (3) Internal Standard Solution Pipetting + Water + Stirring Cuvette no. n + 2 n + 1 n Cycle no. 12 13 14 Stop no. 3 3 3 (4) Sample Aspiration Cuvette no. n + 2 n + 1 n Cycle no. 17 18 19 Stop no. 1 1 1 S. probe SMP. Sample pipetting volume: Fixed at 10 µL S. probe DIL SMP. Diluent pipetting

• Hitachi 902, 2 - 66 Effected when power supply is turned on or there is a printer alarm at start of printing one processing. (2) Paper Feed • At end of printout At the end of each printout (in batch mode of No. 1 and in Nos. 3 to 15), paper is fed by 3 lines. (Paper is also fed when printout is stopped by stop key input.) (3) Page Length Page length is not determined. (4) Printing Performance 4 lines/sec (80 characters/sec), 2.54 cm/6 lines, paper feed in pitches of 4.23 mm/line (1/6 inch) (5) Printing System Numerals are right-justified with space at leading positions unless there is a comment. (6) Printout with No Blank Space • Channel number is not registered in keyed-in information. • Me

• Hitachi 902, 16 - 3 NOTES: 1. BCC (Block Check Character) The RS-232C communication program is provided with a function to add BCC to the send text and support BCC check of the receive text for detection of an improper message. • Condition (1): The start-of-text character is STX (02) 16 and the end-of- text character is ETX (03) 16 . • Condition (2): The text data consists of characters (nontransparent mode). At this time, BCC accumulation is started from the character following STX and carried out until ETX appears. [Calculation Method] Dn = n-th character in hexadecimal notation (1 byte) BCC = Block check character (1 byte) BC

• Hitachi 902, 2 - 52 2.4.5 Alarm Check Method (1) Photometry Assay Calibration Check (a) SD check of approximate expression When SD in the difference between the automatically generated calibration curve and the measured absorbance value in non-linear calibration is larger than "SD limit absorbance," comment SD? is printed. SD value is printed under the test name in the result of calibration. Unless check is desired, input 999.9. (b) Duplication check In measurement of reagent blank and standard solution, comment DUP is printed when the difference in absorbance between two measurements is larger than "duplicate lim

• Hitachi 902, 14 - 4 (3) Adjust VR4 on EMIO100 board so reaction bath water temperature is 37 ± 0.1°C. (Since the heater is turned ON/OFF at around 6.0 V, the tester output should be about 6.0 V when reaction bath water temperature is 37°C.) (4) Adjust the reaction bath temperature indication with VR3. NOTE: A YSI thermometer should be used to measure the reaction bath water temperature. NOTE: The measuring position for the YSI thermometer is midway between the sample discharge position and reagent discharge position. 14.1.5 Barcode Reader Switch Setting Set and/or check the DIP switches of the barcode reader in the following procedure. In case of sample barcode reader: Use the settings made by th

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