41
9.0PRODUCT 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 | FIRST SERIAL |
|
|
| NUMBER | NUMBER |
| COMMENTS |
|
| AFFECTED |
|
|
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, | |
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 | Reflector added to underside of heaterplate | ||
For software and hardware compatability see § 7.3.
Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001
