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Great Manual. This manual is available no where else. It was exactly what I was looking for.
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The TEAC A-1500's Service Manual was instrumental in reviving this classic reel-to-reel. Not only does it have the schematics, exploded parts diagram and parts list, it also provided mechanical adjustment information that approximate factory default settings.
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This service manual was determinant to enable to fix my Alpine Amplifier. I am pleased with my purchase. For a 5 star rating I would like to see a higher resolution scan of the printed circuit board lay-out because the gray scale grafics was dificult to see. Also some schematic diagrams were scanned at a slight angle. Never the less, it had all information I needed to troubleshoot and service my equipment.
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Complete manual, the good quality of reproduction allows enlarged print-out of the schematic diagram in the size it probably had in the original print edition and which is necessary for practical use.
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The service manual was complete and the components on the drawings very good visible.
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7.1.5 CANCELING DETECTION BY THE TRAP SWITCH � Canceling detection by the TRAP switch
Outline: For video data transmission from the Media Receiver to the plasma display, digital signals are used. Therefore, this unit adopts the HDCP (High-bandwidth Digital Content Protection) system for copyright protection. This unit is also provided with a detection switch (TRAP switch) that will prohibit the unit from being turned on again if the rear case of the unit is opened, in order to prevent the panel technology from being leaked out. Function: To deactivate the detection of the TRAP switch Purposes: 1. During production of this unit, adjusting with the rear cover opened is possible. 2. During servicing or repairing, diagnoses of the assemblies are possible while the power is on. Methods: For setting, use RS232C commands: TSN: Ignore the monitoring of the switch CTM: Clear the detection log of the switch TSY: Reactivate monitoring of the switch Notes:
� � � � � The TRAP switch is located on the chassis (see Fig. below). Once rear case opening is detected, send the TSN and CTM commands. Because the TSN command is not stored in memory, monitoring of the switch can be reactivated by turning the unit off then back on. The same setting is possible using the Factory menu. Because the output of the DVI receiver is controlled by the physical setting of the TRAP switch, if the TRAP switch is set to OPEN, the DVI signal cannot be output even if the TSN command is sent. � When the Media Receiver is connected, detection by the TRAP switch can be canceled by entering Factory mode.
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¶ How to enter Factory mode using the remote control unit Please refer to the technical documentation (Service knowhow). ¶ How to clear the detection log of the TRAP switch In the INITIALIZE layer, hold the OSD key on the remote control unit pressed for at least 3 seconds. ¶ After a power-down, to cancel detection of the TRAP switch using only the remote control unit, follow the procedures below. First, fix the TRAP switch to its depressed position. Set the drive ON/OFF switch in the DIGITAL VIDEO Assy to OFF, Then enter the Factory mode. Press the MUTE key four times, then hold the OSD key pressed for at least 3 seconds. Set the AC switch on the panel to OFF. The log is also cleared. Then set the drive ON/OFF switch to ON.
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Rear View
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TRAP switch
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Fig. TRAP switch
PDP-504PU
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