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Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001
9.0 PRODUCT CHANGE HISTORY ___________________________________
This change history details changes which may have significance for servicing. It does not include changes that are
insignificant to users or service technicians. Refer also to change panel on circuit diagrams.
DATE CHANGE
NUMBER
FIRST SERIAL
NUMBER
AFFECTED
COMMENTS
29/06/92 1056 92XXAAA02786 Introduction of Version 2.0 Software.
• Changes from Version 1.0 are:
• Delay on chamber temperature display.
• Sensitivity of control knobs increased.
• Auto standby mode for MR720.
(Note: this change not introduced on AF- and AG- models
until serial number 93XXAAA01818, excluding AGM models).
03/08/92 1019 92XXAAA05495 Enhanced 41 °C calibration - with introduction of Rev F PCB.
Note: this change not introduced on AF- and AG- models until serial
number 93XXAAA01818).
22/01/93 1363 93XXAAA01818 Introduction of Version 2.0 Software on AF- and AG- models.
Note: this change not introduced on AGM models.
25/01/93 1100 93XXAAA02582 C7 added, R57 changed to 390E from 1k2.
7/06/94 1992 9473JES08020 (1) Version 3.0 software started.(All countries except Japan and German)
Changes from version 2.0 are:
• Standby mode times out after 30 minutes (was 20).
• Low temperature alarm in warm up mode activated sooner.
• Set low indicator alarm changed.
• Display during A to D calibration improved.
12/10/94 2088 9473AGU17549 AGU AND AGT Models to version 3 software.
22/08/94 2079 9473AGM14257 MR730AGM to version 3 software.
15/12/94 2161 9473GES22496 MR730GES to version 3 software .
17/02/95 2313 9573GEU03084 MR730GEU to version 3 software.
3/07/95 2469 9541JHB10757 Electroless nickel plating on heaterplate started.
9/08/95 2433 9573JHB12155 Changed recommended settings on front fascia panel to 39, -2.
1/10/95 2443 9573AEA15923 Introduction of Rev H PCB on MR700/720/730. Change Molex
connectors style on power PCB.
01/4/97 3212 9773XXX08041 Introduction of Revision J PCB on MR700/720/730.
23/5/97 3303 9748XXX10692 MR480: Introduce Revision J PCB. Transformer secondary wiring
changed (earth wire removed). Earth wire added to PCB.
30/5/97 3308 9773XXX19731 Heaterplate standoff style changed to shoulder bolts.
01/01/98 3934 9973XXX00001 Heaterplate surface changed to Anodised
01/01/99 4371 2000-73XXX00001 Reflector added to underside of heaterplate
For software and hardware compatability see § 7.3.