The QL Service Manual was HTML'ed by Juanjo Ruiz Leo. Resurrected for the QL World in summer 2013 by Urs König. QL forever!
Foreword by Urs König: This Service Manual relates a bit too closely to Issue 5 and Issue 6 QL PCBs and does not cover JS and later ROMs, nor chipset variations, nor the SAMSUNG made QLs. Follow the link to a web page with details about all machine build standards.
Prepared by THORN (EMI) DATATECH LTD for SINCLAIR RESEARCH LTD
OCTOBER 1985
© Sinclair Research Ltd.
SERVICE MANUAL X-1204
| MANUAL ISSUE | TEXT | CIRCUIT/LAYOUT DIAGRAMS | REMARKS |
|---|---|---|---|
| 1 | JANUARY 1985 | ||
| 2 | JUNE 1985 Minor changes made to pages 1.5, 3.6, 4.1, 4.3, 4.4, 4.15, 4.17 and 5.7. | ||
| 3 | OCTOBER 1985 Appendices A, B, C and D added to Section 4. |
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| System Description |