$1, $5 and Coupons BILL VALIDATOR 

NBM-3000 SERIES 

Service Manual 

TABLE OF CONTENTS 

1. OUTLINE 

The NBM-3000 Series Bill Validator has been developed based upon the M.D.B. communication specifications. This validator is equipped with many added features, such as all plastic construction, built-in antisalting system, accepts U.S. $1, $5 and coupons, vertical sensing, flash Rom programming, unique bill stacking method and other exclusive features. 

2. GENERAL SPECIFICATIONS Specifications and design are subject to change without notice. 

* Detailed Specifications 

(1) Identified as a Genuine Bill 

When the authentic bill (US $1, $5 or Coupon) is inserted into the validator and is found to be genuine, this information is sent to the main controller. 

(2) Identified as a Counterfeit Bill 

      The inserted counterfeit bill is automatically returned. 

              * Bills 146mm or shorter and 166mm or longer. 

              * Bills having an unclear optical pattern. 

(3) Inserted Bill Not Accepted 

The bill validator is unable to accept bills in the following cases: 

              * When the stacker is determined to be full. 

              * When the validator develops a motor fault. 

* When the validator develops a sensor fault. (Dirty) 

              * If a bill jam operation. 

             * When the bill is pulled from the validator during operation. 

(4) When the Stacker is Full 

    The full signal is sent to the main controller when the stacker is     full. To clear this signal; open the stacker, remove the bills and close (safety switch ON/OFF) the stacker. This is transmitted to the main controller. 

3. Quick Model Reference Chart for NBM-3000 Series 

4. INSTALLATION 

5. COMPONENT DESCRIPTION 

5-1 Identification of Components 

5-2 Bill Path and Operations 

6. PREVENTIVE MAINTENANCE 

The validator bill path can become contaminated by dirty bills, dust, moisture or other foreign matter. If the L.E.D. flashes three times, the validator sensor has been heavily contaminated; clean the sensor. It is strongly recommended to clean the validator every one to three months depending on the amount of use or its environment. 

7. Terminal Connection/Signal Conditions 

7-1 Terminal Conditions 

Note: Input/Output is relative to the Validator. 

7-2 I/O Circuit 

8. CONNECTOR AND WIRING DIAGRAM 

* SIGNALS 

9. BILL VALIDATOR COMPONENTS 

10. DISASSEMBLY AND ASSEMBLY PROCEDURES 

Disassembly the bill validator in the order written, reassembly in reverse order. 

10-1Disassembly and Assembly of the Bill Validator Components 

1. Stacker Box Assy 

Removal: 

1. Lift the white latch upward to open the 

stacker lid. 

2. Stacker box is now removable from the 

validator. 

Installation: 

Reinsert the bottom of the stacker box into the 

validator and close the stacker lid. 

2. Chute (B) Assy 

Removal: 

1. Squeeze both latches inward to open the 

chute. 

2. Pull the chute outward and remove. 

Installation: 

In reverse order. 

3. Front Mask Assy 

Removal: 

1. Remove the pan head tapping screws 

(M3x10). 

2. Pull the front mask assembly toward you, 

slightly push it down and remove. 

Installation: 

In reverse order. 

4. Control Board Assy 

Removal: 

1. Remove the two connectors from the back 

of the control board assy. 

2. Unhook the four latches on the housing and 

pull the control board assy out toward you. 

3. Remove the eight connectors from the front 

of the control board assy and remove the 

board. 

4. Cut the harness tie wrap and remove the 

chute (B) harness assy. 

Installation: 

In reverse order. 

Note: When reconnecting the connectors 

to the board, make sure they are fully 

inserted into the board. Failure to do 

so may cause malfunctions. 

5. Drum Assy (R), (L) and Drum Guide 

(R), (L) 

Removal: 

1. Remove the flat-head tapping screws (M3x8) 

on both sides of the housing and two panhead 

tapping screws (M3x8) inside of the 

housing. 

2. Push the two alignment pins of the drum 

guides from the housing holes and remove 

them together with the drums. The alignment 

pins are firmly fitted in the housing, be careful 

when removing them. 

Note: Be careful not to mistake the right 

drum (R) for the left drum (L) or vice 

versa. 

Installation: 

1. Position the drums on to the drum guides 

and insert the drums and drum guides onto 

the cam of the stack output shaft. 

2. Install the drum guides by inserting the alignment 

pins into the housing. 

3. Make sure the stacker lever is positioned 

inside each drum. 

6. Lift Base Assy and Output Bearing (1) 

Removal: 

1. Remove the two flat head tapping screws 

(M3x8) from both sides of the housing and 

two pan-head tapping screws (M3x8) on the 

lift base. 

2. Pull out the bottom of the lift base assy toward 

you or to the stack side of the housing. 

The belts on the lift base assy may be 

hooked on the mountig posts; unhook the 

belt. 

3. When pulling out the lift base assy to the 

position as shown in Figure 6, hold the gear 

section and remove the right side of the assembly 

first. Pull the left side out (that is 

engaged with the left output shaft) toward 

you. The output bearing (1) located on the 

left side needs to be removed together with 

the lift base. 

Note: When pulling out the bottom of the 

lift base assy toward you, be sure not 

to pull it up excessively or the engaging 

gears may be damaged. 

Installation: 

1. Assemble the output bearing (1) onto the 

left side of the output shaft on the lift base 

assy. Insert the left side together with the 

bearing into the housing. 

2. Insert the right side of the lift base output 

shaft into the housing. Unhook the belts from 

under the mounting post on the back side 

of the housing. 

3. Insert the bottom of the lift base assy into 

the housing by spreading the sides of the 

housing. 

4. Install the two pan-head tapping screws 

(M3x8) to the lift base and the two flat-head 

tapping screws (M3x8) onto the sides of the 

housing. 

Note: When installing the lift base assy, be 

careful not to let the output bearing 

(1) and the idling roller slip off. Also 

make sure to unhook the belts from 

the mounting post before inserting 

the assembly. Failure to do so may 

result in damage to the belts. 

10-2 Disassembly and Assembly of the Housing 

1. Carrier Gear Cover 

Removal: 

1. Remove the two flat head tapping screws 

(M3x8) from the carrier gear cover. 

2. Unlatch the two tabs inside the housing with 

a flat-head screwdriver and remove the 

cover. 

Installation: 

In reverse order. 

2. Carrier Gears, Bearings, and Pulse 

Shaft Assy 

Removal: 

The carrier gears, bearings and pulse shaft assembly 

can be disassembled as shown in Figure 

2. 

Note: When removing the gears inserted 

into the shaft, take care not to damage 

them. 

Installation: 

When assembling, be careful not to damage 

the gears or forget their positions. 

3. Carrier Motor and Harness Assy 

Removal: 

1. Remove the two pan-head screws (M3x4). 

2. Remove the carrier motor and harness assembly. 

Installation: 

In reverse order. 

4. Stack Gear Cover 

Removal: 

1. Unlatch the two tabs on the stack side of the 

housing. 

2. Pull upward and remove the cover. 

Installation: 

1. Latch the two tabs (on the front side) of the 

housing. 

2. Push the cover in place. 

Note: Be careful not to pry the tabs aggressively. 

5. Stack Gears and Shaft 

Removal: 

The gears and shaft can be disassembled as 

shown in Figure 5. 

Note: When removing the gears from the 

shaft, be careful not to damage them. 

Please pay close attention to the position 

of the stack output gears. 

Installation: 

When installing the gears, the cam shaft of the 

two stack output gears should be oriented in 

the same position as they were prior to removal. 

Note: If the cam shafts are not positioned 

correctly, the drum assemblies (R) 

and (L) cannot be installed. 

6. Stack Motor and Harness Assy 

Removal: 

1. Remove the two pan-head screws (M3x4) 

from the stacker motor. 

2. Remove the stack motor and harness assy. 

Installation: 

In reverse order. 

7. Main Latch, Shaft and Spring 

Removal: 

1. Pull the shaft out by pressing one side. 

2. Remove the stacker latch, shaft and spring. 

Note: The spring is under tension, be careful 

during disassembly and assembly. 

Installation: 

In reverse order. 

8. Carrier Switch and Harness Assy 

Removal: 

1. Remove the harness from the housing. 

2. Pull the switch assy upward toward you and 

remove. 

Installation: 

In reverse order. 

Note: Be sure to route the harness as it was 

prior to removal. 

9. Safety Switch and Harness Assy 

Removal: 

1. Remove the harness from the housing. 

2. Unhook the right and left latches and pull 

the switch toward you. 

Installation: 

In reverse order. 

Note: Be sure to route the harness as it was 

prior to removal. 

10. M.D.B. Harness Assy 

Removal: 

Cut the harness tie wrap from the M.D.B. Harness 

Assy and the housing. 

Installation: 

Reinstall the M.D.B. Harness Assy back into 

place, and fasten the harness with the tie wrap 

as illustrated in Figure 10. 

10-3Disassembly and Assembly of the Chute (B) Assy 

1. Chute (B) Cover 

Removal: 

1. Unhook the four latches on the back of the 

chute (B). 

2. Slide the whole cover toward you and unhook 

the lower two latches to remove the 

cover. 

Installation: 

In reverse order. 

2. Chute (B) Latch and Spring 

Removal: 

1. Remove the right and left ends of the spring 

from the chute (B) latches. 

2. Remove the latches. 

Installation: 

In reverse order. 

Note: 

Install the components in the reverse order 

of the removal procedure. 

3. PX L.E.D. Board Assy 

Removal: 

1. Unhook the four latches on the board. 

2. Cut the tie wrap and remove the PX L.E.D. 

board assy. 

Installa