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
© Sinclair Research Ltd.
SERVICE MANUAL X-1204
|MANUAL ISSUE||TEXT||CIRCUIT/LAYOUT DIAGRAMS||REMARKS|
Minor changes made to pages 1.5, 3.6, 4.1, 4.3, 4.4, 4.15, 4.17 and 5.7.
Appendices A, B, C and D added to Section 4.