Kronos Timekeeper 400 Series - Page 15

The Series 400 Terminal and Its Parts
Series 400 Terminal Maintenance and Troubleshooting Guide 1-3
Legend
1 LCD cable connector (P2)
2 Keypad cable connector (P1)
3 Ethernet option connector (P3)
4 LEDs (mounted on back side of board)
5 Modem, Token Ring, or twinaxial option connector (J2)
6 RS-485 termination/biasing switch (SW1)
7 Not used and not on all mainboards (P4)
8 Optics assembly (OP1) (mounted on back side of board beneath metal optics shield)
9 RS-232/RS-485 configuration switch (SW2)
10 I/O board cable connector (P5)
11 Fuse (F1)
12 Internal Beeper (BPR1)
13 I/O port (TB1)
14 Communications port (TB2)
15 Battery backup cable connector (TB3)
16 Lithium battery (BATT1)
17 DC wall supply connector (J1 or J3)
The mainboard comes in different RAM sizes: 128K, 256K, 512K, and 1MB. For
the part numbers for the mainboards, see Appendix B, “Series 400 Terminal Part
Numbers.”
Available Options
You can add several options that plug into the mainboard, such as an I/O board, a
battery backup board, the Ethernet option board, the Token Ring interface board,
a modem option board, the auxiliary power source, and the twinaxial interface
option.
The following sections describe these options.