The document outlines the components and functions of Electronic Voting Machines (EVMs) and the Voter Verified Paper Audit Trail (VVPAT) system, detailing their setup, operation, and error resolution procedures. It emphasizes the importance of ensuring no invalid votes and the presence of representatives from political parties during the election process. Various sealing methods, ballot unit specifications, and troubleshooting tips for common EVM issues are also discussed.

1. No Delay In
declaration of
Result
No scope
for Corrupt
Practices
No
Invalid
Votes
2
EVMs HANDS-ON

2. (EVM – COMPONENTS)
Ballot Unit
(BU)
VVPAT
Control Unit
(CU)

3. BU and CU Carrying Cases

4. Battery Used in EVMs

5. EVM – Control Unit (CU) – Front View
Busy Lamp
(Red)
Power ON Lamp
(Green)
Display Section
Candidate Set Section
Result Section
Ballot Section
Power Pack Section
Total Votes Count Section

6. EVM – Components - Control Unit – Display Section
Dual Line Digital Display Panel
Power ON Lamp (Green) Busy Lamp (Red)

7. EVM – Components – Control Unit – Candidate Set Section
Candidate
Set Button
Plug for
Power Pack
Latch
Holes to pass thread for sealing
Candidate Set
Section Door
Power Pack Compartment

8. Holes to pass
thread for
sealing
Inner
Compartment
Door
EVM – Components - Control Unit – Result Section
Result
Button
Inner
Latches
Outer
Door
Close
Button
Print Button
Clear
Button

9. Sealing of CU…
Fixing Green Paper A/B Seal
Sealing inner Result Section with Special Tag
Sealing outer Result Section with Address Tag

10. EVM – components - Ballot Unit – contd.
BALLOT UNIT- the voter can
franchise his/her vote by pressing
a button against the candidate of
his/her choice
Contd…

11. Thumb Wheel Window
Ready Lamp (Green)
Candidate’s Button
Candidate’s Lamp
Ballot Paper Screen
Interconnecting Cable
EVM – components - Ballot Unit Details - contd.

12. Candidate Setting in EVMs
Insert ballot paper in the Ballot
Unit & Set Number of Candidates
Seal Ballot Unit
Mock Poll on Every
EVM with VVPAT
+
1000 vote on 5%
EVMs with VVPATs
Candidate Setting Process
Symbol loading in VVPAT Seal VVPAT
Candidate Setting in Control Unit
Seal Candidate
Set of CU
Presence of political parties/candidates/their representatives in every election related process is mandatory
Contd…

13. BU Back side

14. (For EVMs machines manufactured by ECIL the
length of the ballot paper will be 460 mm and the
width will be 140 mm)
(For EVMs machines manufactured by BEL, the
length of the ballot paper will be 461.5 mm and the
width will be 140 mm).
Balloting Unit of EVMs:
Total length of the ballot paper

15. EVM – components – VVPAT – contd.
VVPAT-
allows the voters to verify that
their votes are cast as intended.

16. VVPAT COMPONENTS

17. VVPAT COMPONENTS
11

18. VVPAT COMPONENTS

19. VVPAT connecting Cables:-
BU interface
11

20. VVPAT– Printer Unit – Internal Parts
Paper Roll
Compartment
12

21. Paper Slip
Compartment
VVPAT – Printer Unt – Internal Parts
13

22. Battery Compartment
VVPAT – Printer Unit – Internal Parts
14

23. VVPAT Counting Booth (VCB)
CONTAINER
PIGEON HOLE

24. TYPES OF SEALS USED FOR SEALING EVMs & VVPATs
PINK PAPER SEAL
GREEN PAPER SEAL / A-B STRIP SEAL

25. SEALS USED IN EVMs
COMMON ADDRESS TAG
SPECIAL TAG

26. EVM CONNECTION - PROCEDURES

27. 1.Lamp does not
glow when the EVM
is switched ON.
Battery (power pack) is
not fitted properly or it
maybe drained.
REMEDY
Insert the battery
(power pack)
properly. If the
problem persists
replace battery.
2. No beep sound
and display indication
when the EVM is ON.
The Control Unit is
defective and not fit for
use.
Replace the Control
Unit with the good
one and report to
BEL.
3. Display shows
INVALID and a beep
sound heard.
The button not pressed
in proper sequence
Press the button in
proper sequence
only.
ERROR REASON

28. 92
3.1) INVALID When
CANDIDATE SET
button is pressed.
Ballot or Close button is
already pressed
REMEDY
EVM accepts
Candidate only when it
is cleared.
3.2) INVALID When
CLEAR button is
pressed.
Previous result not
seen.
Press the result button.
3.3 INVALID When
BALLOT is pressed
Machine Closed
Follow complete
sequence
3.4 INVALID When
RESULT is pressed
Machine NOT CLOSED
Press the close
Button.
ERROR REASON

29. 93
4. No response to
TOTAL button in the
Control Unit.
Busy lamp is ON
Allow the voter to
record his/her vote.
5. Ballot button is
pressed, Busy lamp
does not glow.
Instead BU01 NOT
RESPONDING
appears on the
Display Panel and
short interrupted
beep sound is heard.
Interconnecting cable
of BU1 not Connected
Fix the cable
properly.
ERROR REASON REMEDY

30. 94
7.“Pressed Error” BU Button is struck.
Switch of the CU,
gently check the BU
Buttons or replace.
8.INOPERATIVE. Dysfunctional CU. Replace CU.
9.All candidate LED of
BU are blinking.
BU is dysfunctional. Replace BU
6.Display showing
ERROR and a beep
sound is heard.
Control Unit is defective Replace the Control
Unit
ERROR REASON REMEDY

31. Thank you all…
Mahendra Panda, OAS(S)
Joint Secretary, Works department &
GM-Proc, OSCSC Ltd.