NEC DB2000 Service Manual page 26

Part 4 : 13Mhz Clock
To
IC201-#8
(IF/RF PLL)
2V8_RF1
2V8_RF1
GND
GND
4
13Mhz To Logic Board
1
X200
TR204
GND GND GND
6 5 2
GND
GND
GND
GND
The 13Mhz-clock (X200) consists of a TCXO ( Temperature Compensated Crystal
Oscillator ) which oscillates at a frequency of 13Mhz.
It is used within the LMX2331A Synthesisers on the TRX board and also in the
Superchip and Nell on the logic board.
TR204 and TR205 buffer the output to the logic board.