QubicaAMF TMS Tenpin String Pinspotter, Owner'S Manual, Page: 36 / 155

TMS STRING PINSPOTTER
OWNER’S MANUAL
400-051-010-01 Rev. Date: 7/17
Page 1-22
Figure 7, Pin Detector Circuit
Board Assembly
The pin detector signals are routed to the control
chassis along with the brake solenoid circuits via the
pin detector circuit board assembly.
The pin detector should not be accessed with the cover
open and the machine power on. Use the chassis
controller to direct machine action. If lit LEDs are
visible during a maintenance operation, close the top
cover. Re-start the operation and apply LOTO before
opening the top cover. The pin detector may have to be
moved in order to perform some maintenance. The pin
detector buttons are used for factory testing but should
not be used in normal operation.
Pin Brakes
Mounted just to the rear of the pin detectors and below the take-up reel assemblies are the
pin brakes. There is one brake assembly for each pin. The brake assembly has three main
parts: a cam, a solenoid, and a brake plate. When a pin is determined to have fallen and
the pins have been raised to the up position, its solenoid activates the cam which in turn
pinches the string against the brake plate to secure the string, holding the pin up while the
drawbar lowers the remaining pins to the pin deck. It is only necessary to energize a brake
solenoid momentarily for the brake to function. The weight of the pin keeps the brake
engaged until the pin is raised slightly by the drawbar during the next cycle.
Shield
The pinspotters are equipped with a shield consisting of a plastic panel that is lowered in
front of the machine whenever the pins are raised. This panel indicates to the bowler that
the machine is NOT ready to receive a ball adding an element of safety whenever someone
needs to enter the machine area for maintenance,
although it should be noted that the
shield will not prevent the passage of a ball. The shield is connected to the back of the
drawbar by a string. When it is properly adjusted, it raises only after the pins have been
set, allowing the chassis to determine if any pins fall over during setting before indicating
to the bowler that the machine is ready.
The shield string is connected to the drawbar
by a clip that can be disconnected to keep the shield in the down position while
making and testing machine adjustments.