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I bought the service-manual of the sony ICB-1020(an old transmitter-receiver) at "www.Owners-Manual.com", I found the service-manual for a fairly cheap price(in comparison with other sellers). I filled in some questions, payed the order with Ideal, and within 24 hours I had my service manual. I was very happy:In no time I had my service-manual and everything, but literally everything was noted down in the manual; the electronic scheme, the parts list, etcetera.
A very practical, reference-document.
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This comprehesive service maual was greatly appreciated, as was the digital download.
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Good en helpfull black and white scanned Srfvice manual of the Philps D8444. Quick service and delivery
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Scan was really good quality, easy to read, download easy
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very good manual as always. easy to read, detailed and includes schematic
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3. Board detection
A
If the board connection from Main Ass�y to Amp&Primary Ass�y is interrupted, the BOARD_DET port becomes �H�. If the �H� is detected, the microprocessor will perform as following flow chart. In the case of simultaneous detection with the overload protection circuit, Board detection is performed preferentially to DC-abnormality detection and Overload detection. When an boad error is detected, A.MUTE* is turned on, speaker relay is turned off, then "BOAD ERR" flashes on the display. � The abnormality continues for 2 seconds. � Continues. The power is shut off. � Recovery The power is shut off even if the unit recovers.
B
4. Fan stop detection operation flow in the DC abnormality detection
C
If the fan is forcibly stopped, the 'DC PROT' port becomes "L". Then an abnormality of fan is detected. When an abnormality of fan is detected, A.MUTE* is turned on, speaker relay is turned off, the "AMP_ERR" flashes on the display. � The abnormality continues for 3 seconds. � Continues. � Recovery The program restarts.
*A.MUTE : Audio mute command
D
The power is shut off. � The power key is disabled.
However, when the following keys are pushed so that the key input of a line and the service can be carried out, power can be on. 1 TESTMODE ON (A55F+A55F) 2 When power off, push FRONT ENTER key + ADVANCED SURROUND key continuously 2sec. (Effective, only when power-off is carried out by DC detection)
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VSX-815-K
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