Partner Tech International PT-6900, Service Manual, Page: 59 / 106

49
C
HAPTER
4
L
OCATING THE
P
ROBLEM
Refer to this section to locate the problem with the PT-6900. The following topics are described.
• “General checkout guidelines”
• “Cash drawer checkout” on page 49
• “Touch screen symptoms” on page 51
• “Power symptoms” on page 52
• “Network symptoms” on page 52
• “USB symptoms” on page 53
• “Boot symptoms” on page 53
• “Peripheral-device symptoms” on page 53
• “Motherboard and PCB board jumper settings” on page 54
General checkout guidelines
Use the following procedure to troubleshoot problems:
• Identify as many symptoms as possible in detail.
• Verify symptoms by recreating them.
• Follow the corrective procedures in order.
• If you replace an FRU and the symptom remains, reinstall the original FRU before going to the next step. Do
not replace non-defective FRUs.
Cash drawer checkout
Refer to the following to check for a cash drawer problem.
1
Remove the rear cover. (See “Removing the rear cover” on page 5.)
2
Connect the RJ-11 cable from the cash drawer to the RJ-11 connector on the PT-6900 as shown in Figure 4.1.
IMPORTANT
The cash drawer RJ-11 connector is DC+24V. Ensure the cash drawer to be con-
nected matches this power specification.