Hitachi 902 User manual

SERVICE MANUAL
FOR
MODEL 902 AUTOMATIC
ANALYZER
Copyright Hitachi, Ltd. 1997. All rights reserved. Printed in Japan. Part No. 713-9039 KN-K (H-LT)

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MODEL 902 AUTOMATIC ANALYZER
CONTENTS
1. PRODUCT SPECIFICATIONS................................................................................. 1-1
2. TROUBLESHOOTING ............................................................................................. 2-1
3. FLOW PATH DIAGRAMS ........................................................................................ 3-1
4. BLOCK DIAGRAMS................................................................................................. 4-1
5. ISE ........................................................................................................................... 5-1
6. SWITCH SETTING................................................................................................... 6-1
7. EXPLANATION OF FUNCTION............................................................................... 7-1
8. MOTORS, DETECTORS AND FUSES .................................................................... 8-1
9. ANALYTICAL METHODS......................................................................................... 9-1
10. CIRCUIT DIAGRAMS............................................................................................... 10-1
11. CROSS WIRING REFERENCE ............................................................................... 11-1
12. INSTALLATION........................................................................................................ 12-1
13. MAINTENANCE AND INSPECTION ........................................................................ 13-1
14. ADJUSTMENT SPECIFICATIONS........................................................................... 14-1
15. OEM......................................................................................................................... 15-1
16. SYSTEM INTERFACE.............................................................................................. 16-1

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1.PRODUCT SPECIFICATIONS
1.1 Overall System.........................................................................................................1-1
1.2 Sampling System.....................................................................................................1-2
1.3 Reagent System.......................................................................................................1-3
1.4 Reaction System......................................................................................................1-4
1.5 Photometic System..................................................................................................1-5
1.6 ISE (option)..............................................................................................................1-5
1.7 Installation Conditions..............................................................................................1-6
1.8 User Interface...........................................................................................................1-6
1.9 Dionized Water........................................................................................................1-6
1.10 Analytical Methods...................................................................................................1-7
1.11 Accuracy Methods....................................................................................................1-7
1.12 Data Storage............................................................................................................1-7
1.13 System Interface......................................................................................................1-8
1.14Options for Analyzer.................................................................................................1-8

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1.PRODUCT SPECIFICATIONS
1.1 Overall System
Configuration :Console type automatic analyzer, with analytical and operation units
integrated
Principle :Discrete type, random access, single-line multi-analysis system;
entire reaction monitoring system
Analytical methods :Colorimetry (absorbance measurement), ion selective electrode
method (ISE; option)
Throughput :Colorimetry ;200 tests/hr (Photometry only max. 300 tests/hr
inclusive of ISE)
No. of analysis items:Colorimetry ;36
ISE ;3 (Na, K, Cl)
Serum indexes ;3
Calculation items;8
Reaction time :10 minutes max.; 3, 4, 5, 10 minutes for concentration calculation
(same as Model 7070/7170)
Measurable samples :Serum (or blood plasma) and urine; one sample kind per channel
Application :Emergency (stat) and routine analyses
Test item selection :Via entry from operation panel, entry from system interface, entry
from no. of items settable (11 kinds)

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1.2 Sampling System
Sample container :Hitachi standard sample cup
Sample tube ;diameter 13 to 17 mm
length 75 to 100 mm
Sample disk :60 positions
Outer row;35 positions (routine and stat samples)
(with free adapter, barcode reader attachable)
Inner row;25 positions (standard + control samples (22),
rinse solutions (3))
Detergents :3 kinds
(W1;for sample probe rinsing) HITERGENT
(W2;for sample carryover evasion) ISE RINSE SOLUTION
(W3;for sample carryover evasion) HICARRYNON
Sampling mechanism :Pipetter driven by stepping motor
2 to 50 µL of sample/test (in 0.1 µL steps)
Pipetting mode :Normal ;prescribed volume discharged at cell
bottom
Aqueous sample;system water solution for sample probe
internal rinsing usable as STD-1
Sample pre-dilution not performed
Insufficient sample detection:Resistance detection method
Sample ID :Barcode reader (option)
Following code shemes are usable in combination; CODE 39,
CODE 128, INTERLEAVED 2 OF 5, NW7 (Modulas 10,
Modulas 16)
Automatic rerun :Auto rerun function not provided
Stat sample analysis :Routine sample analysis interruptible for stat sample analysis
Sample carryover :Sample carryover evasion function available; 2 kinds of
detergents settable on sample disk inner row
Sample conveyance :Can be sampled directly from belt-line

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1.3 Reagent System
Reagent disk :One disk, 40 positions
(20 positions each on inner and outer rows)
Reagent cooling :Cooling water circulating system (3 to 15°C) (option for China-
destined instrument)
Reagent bottle :50 mL, 20 mL (adapter necessary)
(without barcode, concentrated reagent unusable)
Detergents :HITERGENT (50 mL); position 40 (fixed)
(for addition to reaction bath)
Detergent 1;for reagent probe, stirring rod rinsing, reagent
probe carryover evasion, reaction cell carryover
evasion
Detergent 2;for reagent probe carryover evasion, reaction cell
carryover evasion
(settable on reagent disk inner row)
ISE reagent :Internal standard solution(position 37 (fixed))
Diluent (position 38 (fixed))
Pipetting mechanism :Pipetter driven by stepping motor; 20 to 350 µL/test (in 1 µL
steps)
Reagent addition timing:3 steps (0, 1.5 and 5 minutes); throughput is maintained even
when adding 3 reagents.
Carryover evasion :Rinsing for carryover evasion possible; throughput may decrease
by specifying carryover evasion.

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1.4 Reaction System
Reaction disk :Turntable type disk (10-minute reaction per rotation)
Reaction cell :Optical path length 6 mm (area 6 ×5 mm)
No. of reaction cells :48
Reaction cell control :One rotation + one pitch feed (18 seconds)
Sample pipetting position:One position (fixed)
Reagent pipetting position:One position (fixed)
Reaction temperature :37 ±0.1°C (warm water circulating system)
Stirring :By means of stirring rod rotation
Timing for stirring; after each addition of R1,R2,R3
Stirring possible for a minimum volume of 100 µL
Stirring position :One position (fixed)
Reacting solution volume:Minimum;250 µL (minimum required volume for photometry)
Maximum;500 µL (temperature control, rinsing upper limit)
Photometric position :One position (fixed)
Cell rinsing :After completion of photometry (rinsing 3 times; rinsing with
detergent not performed)
Carryover evasion :Rinsing for carryover evasion possible; throughput may decrease
by specifying cell carryover evasion

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1.5 Photometric System
Photometer :Multiwavelength photometer (absorptiometry)
Wavelengths :12 wavelengths
(340, 376, 415, 450, 480, 505, 546, 570, 600, 660, 700, 800 nm)
Monochromator :Grating
Detector :Photodiode
Linearity :Up to 2.5 Abs (10 mm cell conversion)
Photometric method:Direct photometry of reaction cell (at one or two wavelengths)
Correction :Cell blank correction prior to analysis
(passed cell blank measurement alone)
1.6 ISE (option)
Electrodes :Flow cell type, liquid-membrane ISE cartridge
Reference electrode flow path:1 MKCL, liquid flow path
Measuring temperature :36°C ±2°C (warm water circulating system)
System :Indirect (dilution) potentiometry, 50-times dilution
Measuring cycle :36 sec/sample (18 sec for sample, 18 sec for internal
standard solution)
Measured items :Na, K, Cl
Measurable samples :Serum and urine
Linearity :Na;10 to 250 mmol/L
K;1 to 100 mmol/L
Cl;10 to 250 mmol/L
Reagent bottle :Internal standard solution ;50 mL max.
Diluent ;50 mL max.
Reference electrode solution;500 mL max.

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1.7 Installation Conditions
Power requirement :230 V, 50/60 Hz, less than 1.5 kVA
Deionized water consumption:Less than 15 L/hr
Waste liquid drain :2 systems (for concentrated and diluted liquids)
Ambient temperature/humidity: Temperature;18 to 30°C
Humidity ;20 to 80% (non-condensing)
Analyzer dimensions :720 W ×720 D ×1085 H mm
Analyzer weight :Within 200 kg
BTU :1300 kcal/hr max.
Noise (mean) in operation :< 55 dB
1.8 User Interface
Application :Routine analysis for Asia version
Display :Backlighted LCD; 256 ×128 dots, graphic
Keyboard :Touch screen keys (72 keys)
Printer :Thermal roll-paper printer (20 digits)
Multi-language
compatibility :Display;Japanese/English/Chinese/German/Spanish applicable
Printer;English alone
1.9 Deionised Water
Pressure :0.5 to 3.5 kgf/cm2
Conductivity:1 µs/cm or less, germ-free

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1.10Analytical Methods
Assay modes :One-point
One-point end (+ prozone check)
Two-point rate
Two-point end (+ prozone check)
Three-point two-item
One-point rate two-item
Rate A (+ sample blank correction)
Rate A (+ serum indexes)
Rate B two-item (same wavelength)
Rate B two-item (different wavelengths)
ISE
Data alarms :Based on Model 7070/7170
Standard solution :22 kinds max. (positions to be shared with control sera)
Calibration types :Linear (2-point linear)
K factor
4 parameter LOGIT-LOG
5 parameter LOGIT-LOG
Spline
Segmented line
Calibration method :At startup only; all points (FULL) and reagent-blank-corrected
calibration
Calculation channels :For 8 channels
Test-to-test compensation :For 8 channels
1.11Accuracy Control
Control serum :5 kinds max. (positions shared with standard solutions)
1.12Data Storage
Routine sample data :400 samples (in data disk)
Stat sample data :50 samples (in data disk)
Control sample data :5 kinds ×30 (in SRAM)