DoorKing 1833 PC Programmable - Manual (Page 55)

1835-065-E-7-13 53
SECTION 6 - MAINTENANCE
The DoorKing telephone entry system is essentially a maintenance free device. When the unit is properly installed, it should
provide years of trouble free service. Maintenance is limited to updating the directory and phone number and/or entry codes
when residents move in or out.
The faceplate of the unit should be cleaned on a regular basis to keep contaminants in the air from sticking to the surface and
possibly causing pitting. When cleaning the faceplate of the system, never use an abrasive cleaner or cloth. Stainless steel
cleaner works very well with a soft cloth for systems with a stainless steel faceplate. A clean damp soft cloth should be used to
clean gold plated faceplates.
If problems should develop with your telephone entry system, refer to the trouble-shooting guide on the following pages to try
and correct any problems. Our experience has shown that a majority of reported problems are actually programming related
and can be corrected on site. If problems persist and they cannot be corrected, contact your authorized DoorKing dealer for
assistance. Before performing any trouble-shooting, check the following:
1. Have a good VOM meter handy to check voltages and continuity.
2. Have a telephone test set (DoorKing P/N 1800-050 or equivalent) to check the telephone line. Noise on the phone line will
cause problems with the entry system.
3. Be sure that the entry system case is properly grounded.
4. Be sure that the telephone wires are twisted.
5. A hum on the system indicates that the phone line or 16.5 VAC power lines may be grounded. Check to be sure that the
phone lines or power lines are not shorted to ground.
6. Check the 16.5 VAC system power. Be sure that the transformer is properly rated (20 VA for 1833, 1834 and 1835 systems;
40 VA for 1837 systems). Keep the wire run from the transformer to the entry system as short as possible. Use 16 or 18 AWG,
600 volt insulated wire only. The importance of proper power wiring cannot be over stressed!
7. Isolate the telephone entry system. Disconnect any external devices, such as expansion boards, elevator control boards, RS
232 connection, card readers, RF receivers, keypads, etc. which may affect the operation of the system.
6.1 Troubleshooting
System emits a long
tone and cancels
programming.
Keypad is dead.
LCD Display shows:
Reset Mem? 1 = Y 2 = N
LCD Display shows:
Need 1835 (3.1.3) SM
MEMCHIP
LCD is unreadable.
Symptom Possible Solution(s)
• Wrong master code entered. Start over.
• Waiting too long between pushing buttons. Enter information quicker.
• Keypad is not plugged into board correctly. Cable points down.
• Memory chips are installed upside down.
Cannot get into
programming mode.
• Waiting too long between pushing buttons.
• Forgetting to press # first when programming.
• No power. Check for 16.5 VAC input power.
• Check that the keypad is properly connected to the circuit board. The cable on the plug
points down when connected to the circuit board.
• The memory chip size (small chip) and the main memory storage ship (large chip) do not
match in memory size. By pressing 1, the main memory storage chip will be matched to the
memory size chip. All data in the main memory will be erased when this function is
performed.
• Press 2 to cancel out of this function.
• The small chip in the PC board socket is for an 1838 system and cannot be used in the
telephone entry system.
• Adjust contrast (4.3).