Purchased the manual that I was looking for at a great price and could download it easily.. Great service experience and for future purchases I plan to use the site.
Thank you very much
A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
Text excerpt from page 86 (click to view)
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7.1.2 Protection Circuit
DC detection
A
Detection method
XPROTECT port (A/D)R397: 56 K-ohms Less than 0.6-0.8 Vdd 2.8 sec after Mute: On Speaker Relay: Off Shifting to STBY after 3 sec "AMP ERR" flashes for 3 sec Hold the STANDBY key pressed for 10 sec. The unit will recover if the duration of detection is 3 sec or less.
Detection start time Process
Display Recovery Remarks
B
Overload detection
Detection method
XPROTECT port (A/D)R363: 27 K-ohms 0.4-0.6 Vdd 2.8 sec after Mute: On Speaker Relay: Off Shifting to STBY after 3 sec "OVERLOAD" flashes for 3 sec Press the STANDBY key.
Detection start time Process
C
Display Recovery Remarks
Fan (temperature) and short-circuit of the power supply circuit
Detection method
XPROTECT port (A/D) 0.4 Vdd or less 1.0 sec after Mute: On Speaker Relay: Off Shifting to STBY No display Hold the STANDBY key pressed for 10 sec.
Detection start time Process
D
Display Recovery Remarks
Fan stop
Detection method
E
XPROTECT port (A/D) 0.4 Vdd or less 1.0 sec after Mute: On Speaker Relay: Off Shifting to STBY No display Hold the STANDBY key pressed for 10 sec.
