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Exactly what was needed to assess the product - excellent value and great service
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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.
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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.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
(5) Lighting in green, and then in red (Alarm of power voltage error) Unlike [lighting in red] in the STANDBY mode, [lighting in green] continues for about 30 seconds without any output of images and audio signals. Since then, the mode turns into [lighting in red]. (Caution) How to reset the alarming condition The alarming condition can be reset when an OFF�ON setting is repeated twice for the main power supply in the state that the LED is lit in red. The interval between the first and second settings is not particularly specified.
Lighting in red
Make an OFF � ON setting twice for the main power supply in order to reset the alarming condition. Is the LED lit in red after it has been lit in green for about 30 seconds? YES When the main power supply is turned on in the state that the AD, PD, and PH connectors are disconnected, are there the Vs (170Vdc) and Vd (60Vdc) outputs at Pins 6-7to Pins 9-0 of the PD connector and a 5Vdc output at Pins 1-2 of the PH connector? In this case, is the LED not turned in red after it has been lit in green for about 30 seconds? At that time, however, no images are generated. NO When the main power supply is turned on in the state that the PA and PV connectors are disconnected from one after another, is there a 12Vdc output at Pins 1-3 of the PA connector or the 12Vdc and 6Vdc outputs at Pins 1 and 3-4 of the PV connector? In this case, is the LED not turned in red after it has been lit in green for about 30 seconds? NO Is there an output of 3.3Vdc available at Pins 1~3 and 2.5Vdc at Pins 7~9 in the state that the PA and PV connectors are returned to the former state, the main power is turned ON, and the PN connector is disconnected? In this case, however, this check must be finished in 30 seconds. Otherwise, there will be power tripping on account of an alarm. NO
Normal
Refer to P7-1 "HOW TO DIAGNOSE THE PDP MODULE". YES The PDP is fault. (Caution) The voltage values of Vd and Vs can differ according to the PDP. The method of checking these voltage values is obtainable from [2. Adjustment of the power unit] in the method of adjustment.
YES
The MAIN PWB or the AUDIO PWB is fault.
NO
The Power unit or the PN connector is fault.
YES The MAIN PWB is fault.
8-7
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