The manual deserves some extreme criticism. It completely omits details on how to connect the extension cables to the front panel, simply telling the user “connect to the front panel”. Not only is some of the information completely wrong, but was obviously translated into “Engrish”. The author tried to get very wordy to explain how to connect something or change a jumper. Instead, an illustration would have helped to clarify the idea without confusion. Here’s a snip from the manual’s wisdom:
Jumper cap setting (Jumper pins “J1” on PCB): LCD can display in either oC or oF scale. Open: Centigrade (oC); Short: Fahrenheit (oF) When J1 has no jumper cap on, temperature shall display is in oC scale. Otherwise, display in oF scale when J1 has jumper cap on. (Push “Reset” to display new temp scale after J1 setting is done)
Basically what I translated this to mean “on for F, off for C”. After looking at the back of the panel to check my settings, I realized that the manual is just plain WRONG! J1 is the audio connector, and JP1 is the jumper bank that changes the temperature readout. Now that I had found the correct jumper bank, I see a 3-pin jumper bank, and the manual explained a 2-pin jumper bank! Fortunately, the settings are silk-screened on the PCB. Basically, jump pins 1-2 for Celcius, and 2-3 for Fahrenheit. This section of the manual is completely useless to anyone who wants to change this setting. Fortunately, the jumpers were set to Fahrenheit by default. In one of the pictures below I have circled jumpers J1 and JP1 for easy identification.
Upon analysis, you really cannot mess up the front panel cable connection. The connectors will only fit one way, and the pin grouping obviously match up to the correct ports. The cable ends have “UP” labeled on them, obviously intending the user to face them upwards. This is not obvious to the user at first glance, and requires a bit of thought. There was no mention of these connections in the manual, not even an illustration.
