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One address for rare manuals.Very good copy. Thank you.
All ok. I pay 5 $ and now i have 92 pages of good scaned service manual for my oooooold akai. Now i will try to repair it.
good and ok, very nice , good and ok, very nice, good and ok, very nice
Super manual it contains all the things you need to service your Marantz 2100.
A very easy to understand and use manual. Well worth the money.
+B overcurrent (OCP) Occurs when an overcurrent on the +B (135V) line is detected by pin 48 of IC001 (A Board). If the voltage of pin 48 of IC001 (A Board) is less than 1V when V.SYNC is more than seven verticals in a period, the unit will automatically turn off. +B overvoltage (OVP) Occurs when a high is felt onpin 2 of IC501 (A Board). I-PROT Occurs when an absence of the vertical deï¬‚ection pulse is detected by pin 31 of IC301 (A Board). Power supply will shut down when waveform interval exceeds 2 seconds. IK (AKB) If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC301 (A Board). TV will stay on, but there will be no picture. *(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K). Zero Cross Check Q691 collector (GK Board) 7.5V STBY goes to 0V when the set is turned on. 9V Check Check Q691 collector (GK Board) 7.5V STBY goes to 0V when the set is turned on.