+ --- | | +------+ | | | A B C D +-------+
+ | | | | | | | | | | | |
+ 1-3 4 5 6 7 8 9 10 11 12 13-15 Pro |
+ 1-2 3 4 5 6 7 8 9 10 11 12-13 Pro2|
+ +--------------------------------------------------+ |
+ | connector | ---
+ +--------------------------------------------------+ GND
+
+
+ JP:
+ +-----------------------------+-+-+-+-+ Vcc
+ |bias control? - - - - - ---
+ | 3.9K*5 R R R R R |
+ +--------^+ +--------+ - - - - - |
+ | | | HC4051 <0-----------|-|-|-|-|----|R|-+
+ | |capa. | Z2 <1-----------|-|-|-|-|----|R|-+
+ | TP1684 |sense | <2-----------|-|-|-|-|----|R|-+
+ | <---+--| <3-----------|-|-|-|-|----|R|-+
+ | | | | <4-----------|-|-|-|-|----|R|-+
+ | | ~En| <5-----------|-|-|-|-|----|R|-+
+ | | +----> <6-----------|-|-|-|-|----|R|-+
+ | | | | | A B C <7-----------|-|-|-|-|----|R|-+
+ +---V---^-+ | | +-^-^-^--+ | | | | | |
+ KEY HYS | | | | | | | | | | |
+ | | | | +--------+ | | | | | |
+ | | | | | HC4051 <8-----------|-|-|-|-|----|R|-+
+ | | | | | Z3 <9-----------|-|-|-|-|----|R|-+
+ | | | +--| <A-----------|-|-|-|-|----|R|-+
+ | | | | <B-----------|-|-|-|-|----|R|-+
+ | | | | <C-----------|-|-|-|-|----|R|-+
+ | | | ~En| <D-----------|-|-|-|-|----|R|-+
+ | | | +-> <E-----------|-|-|-|-|----|R|-+
+ | | | | | A B C <F-----------|-|-|-|-|----|R|-+
+ | | | | +-^-^-^--+ 0 1 2 3 4 5 6 7 33K*8
+ | | | | | | | +-----------------+
+ | | | | | | | | LS145 |
+ Vcc | | | | | | | +-^--^--^--^------+
+ --- | | | | | | | A B C D +-------+
+ | | | | | | | | | | | | | |
+ 1-2 3 4 14 15 5 6 7 8 9 10 11 12-13 |
+ +--------------------------------------------------+ |
+ | connector | ---
+ +--------------------------------------------------+ GND