Re: JR Century 7 PCM instructions

You do not need the whole manual as apart from the Vtail mixing and EPA buttons behind the three covers lower front of TX, remainder operates the same as any other JR manual type TX. However, PCM is quite different to modern sets and is set up as follows =

JR CENTURY 7 PCM JR APEX 7 PCM

FAILSAFE OPERATION

Transmitter is known in USA as Century 7 and elsewhere as the Apex 7. Dual failsafe facility

1. If control is lost for more than 1 second, all servos go to a preset position.
2. This also occurs if the receiver battery falls below a preset voltage. For the correct operation of the failsafe, it is essential that the failsafe information is sent to the receiver memory before flight. If the fail-safe monitor lamp is flashing, it indicates that this has not been done and you must press the SET/TEST button on the transmitter. REMEMBER - A FLASHING MONITOR LAMP MEANS PRESS THE TEST/RESET BUTTON ON THE TOP REAR OF TX. If you do not want to use the fail-safe feature, slide the fail-safe battery switch to the "OFF" position and slide the "fail-safe mode switch to the "Hold" position. In this case the monitor lamp will not be turned on and in the event of interference; all servos will hold their last position until the interference has cleared. (or model crashed). PROGRAMMING FAIL-SAFE If it is required that all servos go to pre-set positions when the fail-safe is activated, proceed as follows: -

1) Turn the fail-safe mode switch to the "ACT" position (The monitor lamp should start flashing) 2) Decide the position each servo is to assume and set the sticks and auxiliary controls to those positions. 3) Push the "Memory" button. The transmitter is now programmed to those positions and will retain them in its memory until they are changed or the TX battery is completely flat or removed. 4) To prevent the above settings from being changed accidentally, slide the fail-safe "mode switch" to the "lock" position. 5) When the RX is turned on, press the "SET/TEST" button. The monitor lamp should stop flashing. [controls will also move to the preset positions allowing visual indication that positions to be held are still as desired] BATTERY FAIL-SAFE OPERATION 1) Slide the battery fail-safe switch to the "on" position. 2) When the receiver is turned on, press the "SET/TEST" button. The monitor lamp should stop flashing. When the battery fail-safe operates, the throttle servo will move to ½ throttle or below. All other servos will function normally. You will not be able to operate the throttle above ½ throttle but below ½ throttle will operate normally. This should be enough to allow you to land safely. When this condition happens, it indicates that your receiver battery is critically low on voltage, and loss of control will occur if you do not land within 30 seconds. This fail-safe condition can only be checked with a low battery.

regards Alan T. Alan's Hobby, Model & RC Web Links