The ease of this purchase was a good start. The content of this manual was exactly all I needed to retore my Tandberg 64.
All of the mechanical and electrical information is contained in the manual and the quality of the document makes reading the data easy.
The exerience with the resource has made this my prime source for technical data.
Text excerpt from page 41 (click to view)
FLOW CHART NO.16
Drum servo does not function.
Is there 14.318MHz oscillation at pins(37) and (38) of IC701?
YES In PB mode NO
NO
Check peripheral circuit of X701.
In REC mode YES
Is there drum FG signal at pin(65) of IC701?
YES
Is there V-SYNC signal(reference) at pin(50) of IC701?
NO
Check drum FG signal line.
Is there head switching pulse at pin(23) of IC701?
YES
NO
See FLOW CHART NO.15.
Check pin(50) of IC701, C770, C771, R770 and their peripheral circuits.
Are there drum APC output at pin(34) NO of IC701 and drum AFC output at pin(32) of IC701?
YES
Replace IC701.
Is there drum control voltage input at pin(2) of IC706?
YES
NO
Check line between pins(34) and (32) of IC701 and pin(2) of IC706.
YES
