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432: Difference between revisions
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File:Tek_432_internal_8.jpg|Close up view of BNCs. These need to be unsoldered for removal, but nothing else must be unsoldered to access/clean the vertical gain rotary switch. | File:Tek_432_internal_8.jpg|Close up view of BNCs. These need to be unsoldered for removal, but nothing else must be unsoldered to access/clean the vertical gain rotary switch. | ||
File:Tek_432_internal_9.jpg|View of the input preamp. This board needs to be unplugged only, but not removed or unsoldered. It has four 2-pin connectors. Then it can be removed, still attached to the compensation capacitor carriers. | File:Tek_432_internal_9.jpg|View of the input preamp. This board needs to be unplugged only, but not removed or unsoldered. It has four 2-pin connectors. Then it can be removed, still attached to the compensation capacitor carriers. | ||
File:Tek_432_internal_10.jpg| | File:Tek_432_internal_10.jpg|Lifting off the assembly consisting of the 2 compensation capacitor carrier plus the vertical preamp board plus the push-button switch board for CH1/CHOP/ALTERNATE/CH2. The switch board has two plug connectors below that must be removed. It helps to have long fingers or a good pair of needle nose pliers. | ||
Lifting off the assembly consisting of the 2 compensation capacitor carrier plus the vertical preamp board plus the push-button switch board for CH1/CHOP/ALTERNATE/CH2. The switch board has two plug connectors below that must be removed. It helps to have long fingers or a good pair of needle nose pliers. | |||
File:Tek_432_internal_11.jpg|Second view under the assembly being removed. | File:Tek_432_internal_11.jpg|Second view under the assembly being removed. | ||
File:Tek_432_internal_12.jpg|The rotary switches exposed. Each one has four contact fingers underneath. They are cleaned using small (5mm) wide strips of paper soaked in isopropanol alcohol (2-propanol). | File:Tek_432_internal_12.jpg|The rotary switches exposed. Each one has four contact fingers underneath. They are cleaned using small (5mm) wide strips of paper soaked in isopropanol alcohol (2-propanol). | ||