foc.us 1690 User manual

Focus
Service Manual
October 2007

1. Scanner Introduction
a. See User’s Guide
2. Theory of Operations
a. See User’s Guide
3. Basic Troubleshooting
a. See User’s Guide
4. Revision History
a. 1690
A – June 2005
- Released
B – August 2006
- RoHS compliant
C – Not used
D – May 2007
- Blackfin platform
- IR integrated into Decode board
- Window and Illumination board change
- Camera board running at 35MHz
b. 1633
A – November 2006
- Limited release of 315 to one customer
B – January 2007
- Released
C – Not used
D – Pending Release
- Blackfin platform
- IR integrated into Decode board
- Window and Illumination board change
- Camera board running at 35MHz
c. 1650
A – September 2007
- Released
d. 1890
A – September 2007
- Released

5. Basic IR & Illumination Functions (1690, 1633, 1650 & 1890)
a. IR
i. Two ranges to control which LED pattern is used to illuminate the object
1. Near IR – Unfocused LED pattern is used (0” to ~ 5”)
2. Far IR – Focused LED pattern in used (~5” to ~ 11”)
3. Typical IR operation ranges are:
a. Near – 0” to 4”
b. Far – 4” to 8”
c. When an object is at the near/far transition point the LED
pattern may toggle back and forth between the two modes.
b. Illumination
i. 3 modes of operation (see figure below for LED locations of 1690A &
B, 1633A and B & 1890A – NOTE: 1690D, 1633D & 1650A pattern is
slightly different)
1. Linear
a. 4 focused LEDs (Two are used as the “targeting” beam)
b. For rapid decoding of 1-D codes within linear image frame
c. Default linear image frame: 1280 x 32 pix. (width x height)
2. Near
a. 12 unfocused LEDs
b. For area decoding of a close object.
c. Default area image frame: 1280 x 512 pix.
3. Far
a. 15 focused LEDs
b. For area decoding of a far object.
c. Default area image frame: 1280 x 512 pix.
4. Targeting
a. 2 of the inside Linear LEDs create a “target line” when IR
detects an object.
b. The “line” shows where the camera center line is so the
operator can scan or image the desired object.
window
linear linear
IR
near far
LED locations

6. Torque Values
a. The below table contains the torque value of screws that may need to be removed
and reinstalled during servicing.
b. Screws on non-serviceable components have been omitted.
c. All values are in units of in-lbf and have a tolerance of ±3% of the listed value.
Torque Values for Screws
Model >> 1690 1633 1650 1890
Revision >> A B D A B D A A
External Screws
Top Case (qty 1) 1.6 1.6 1.6 1.6 1.6 1.6 1.6 2.8
Bottom Case (qty 2) 1.6 1.6 1.6 1.6 1.6 1.6 1.6 2.8
RJ45 Assembly (qty 1) 1.6 1.6 1.6 1.6 1.6 1.6 1.6 2.8
BT Bottom Case Cover (qty 1) NA NA NA 1.6 1.6 1.6 NA NA
Internal Screws
Camera Assembly (qty 2) 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6
IR Block Assembly (qty 2) 1.6 1.6 NA 1.6 1.6 NA NA 1.6
All values are in-lbf

7. Disassembly Instructions (1690A & B)
a. Remove 2 labels
b. Remove 4 screws
c. Separate top case
d. Unplug beeper cable
e. Remove window
assembly from top
f. Remove beeper by
bending tab back
and gently pulling
out beeper
Labels
Screws (3 are
under labels)
Unplug
Window
assembly
Beeper tab

g. Unplug camera cable
h. Remove 2 screws to
release camera
assembly
i. Remove decode
board from bottom
case
j. Unplug both cables from decode board
Camera
cable
Camera
assembly
screws (2)
Unplug
cables

k. Remove bottom cover by pushing up on the
end and pull out
l. Remove the interface
assembly
m. Remove cables
Push up
Pull out
Unplug
cables

8. Assembly Instructions(1690A & B)
a. Reverse the disassembly instructions while observing the following key points
b. Interface Installation
i. Insert the interface board
with the bottom side (without
the 2 connectors) facing the
screw insert, into the grooves
nearest the insert of the case
bottom as shown.
ii. Thread the 22 pin flex cable
through the top handle of the
bottom case.
iii. Snap the bottom cover
assembly into place by
pushing down and then in on
the cover to snap it into the handle.
c. Decode Installation
i. Install the cable from a bottom
case assembly into the connector
(J2) on the bottom side of the
decode board.
ii. Loop the interface to decode flex
cable down inside the bottom
case handle and seat the decode
into the case as shown. Do not
allow the cable to interfere with
the trigger. While holding down
on the decode, pull the trigger
and you must hear/feel the button
clicking. If not re-dress the cable
and re-seat the decode and try
again.
iii. NOTE: 16 pin illumination cable
must be installed prior to
installing the decode board.
Interface Install
Screw insert

d. Camera Assembly Installation
i. Install a focused camera
assembly onto the posts,
and install 2 screws.
ii. Install the camera cable
into the camera board.
iii. Do not touch the camera
lens or remove the
camera PCB from the
assembly.
e. Illumination Assembly Installation
i. Install the flex cable
from the decode
board into the
connector on the
window assembly.
ii. Install the window
assembly into the
bottom case inside
the groove.
iii. Verify the capacitor
boot is in the
orientation shown.
iv. Fold and route the
cable as shown.
NOTE: DO NOT ALLOW THE CABLE TO CURVE IN FRONT OF THE COLLECTOR
NOTE: DO NOT TOUCH THE FRONT OR BACK SURFACE OF THE WINDOW
v. Inspect the photodiode shield’s
position. It MUST be flush with the
board and the opening MUST be at the
Install 2
screws here
Photodiode cover
Fold cable
as shown
Capacitor boot

Window groove – Do
not pinch the rubber
Fig. 7
front of the photodiode as shown. If not adjust it accordingly.
vi. Connect the beeper flex cable to the decode board as shown.
vii. Carefully close the top case onto the bottom case ensuring that the
cables are not pinched. The window MUST be captured completely
inside the top case groove. The capacitor retaining post in the top case
MUST slide inside the slot in the capacitor boot when the case halves
are closed. When the top case is about halfway closed rotate it forward
slightly to capture the window in the groove, and then rotate it back.
This helps to ensure the window sits properly inside the case groove as
shown.
NOTE: THE TOP CASE WILL SLIDE ONTO THE BOTTOM CASE WITH LITTLE
RESISTANCE. IF IT FEELS TOUGH TO INSTALL, SOMETHING IS NOT LINED UP
PROPERLY.
f. Case Screws
i. Install 4 screws as shown.
Do not pinch
these cables
with the cases
Capacitor
retaining post

9. Assembly/Disassembly Changes for 1633B (Focus Bluetooth)
a. The following instructions show the differences in the assembly of the 1633B
Bluetooth scanner compared to the 1690A&B.
b. Follow the basic instructions for the 1690A&B noting the following changes.
i. Bottom case and top case are different
ii. Interface board is replaced by transceiver board
iii. 22 pin flex cable is shorter.
c. Transceiver Board Installation
i. Connect flex cable to
board connector
(connector style may
differ from one shown)
ii. Dress cable through
opening in bottom case
iii. Slide board into
bottom case groove.
iv. Push board all the way
in.
Connect flex
cable here
Dress cable
through opening
Board
groove
Board fully
seated

v. Slide the bottom case cover’s tabs
under the plastic on the bottom
case.
vi. With the tabs under the plastic
press in the middle of the cover to
snap it in place.
vii. While holding the
middle of the
cover, press the
end with the
battery lock down
into place.
Cover tabs
Cover tabs under
bottom case plastic
Press down
here
Tabs must
stay under
the p
lastic

viii. Install 1 screw into hole through battery lock.
ix. Connect 22 pin flex
cable to the decode
board.
Push here to snap
cover in place
Install screw here
Connect to
decode board

10. Assembly/Disassembly Changes for 1690D
a. The following instructions explain the differences in the assembly of the 1690D
scanner compared to the 1690A&B.
b. Follow the basic instructions for the 1690A&B noting the following changes.
i. Decode Board
1. 22 pin connector location change
2. 16 pin connector location change
3. Blackfin processor
4. IR integrated on board
5. New IR block
6. Photodiode shield is integrated into the IR block
ii. Camera Assembly
1. New camera board
iii. Illumination Assembly
1. New illumination board
2. No IR
3. New capacitor holder
4. New window (lens locations)
iv. Cables
1. 22 pin cable is longer allowing full access to interface board
without taking entire unit apart.
2. 16 pin cable is shorter due to decode board connector location
change.
c. Check spare parts matrix for spare part compatibility.
d. An upgrade kit is available to convert a B rev to a D rev.
22 pin connector -
new location
16 pin flex cable connection now
located on top side of decode board
New Illumination Assembly w/ no
IR board and new capacitor holder
New Camera Assembly
IR integrated
onto decode
board

11. Assembly/Disassembly Changes for 1633D
a. Follow instructions from section “Disassembly/Assembly Changes for 1633B
(Focus Bluetooth)” while observing the same changes listed in section
“Disassembly/Assembly Changes for 1690D”
b. The 22 pin flex cable remains the same from 1633B to 1633D.
c. Check spare parts matrix for spare part compatibility.
d. An upgrade kit is available to convert a B rev to a D rev.
12. Assembly/Disassembly Instructions for 1650A
a. The following instructions explain the differences in the assembly of the 1650A
scanner compared to the 1690D.
b. Follow the basic instructions for the 1690D while noting the following changes.
i. Part Differences
1. Bottom case
2. 22 pin cable
3. RJ45 connector housing w/ special cable fold
4. Electronic grade RTV (GE RTV 162 or equivalent) to secure the
illumination cable and 10 pin RJ45 cable (see instructions).
ii. Assembly and disassembly of the top case, illumination assembly,
camera assembly and decode board are the same as in 1690D.
c. Disassembly
i. Remove the 4 outer case screws shown.
Note: The 3 bottom case screw may have rubber plugs that will need
to be removed first. The top case will have the logo label covering
it.
ii. Follow disassembly details from the 1690D section for the top case,
illumination assembly, camera assembly and decode board.

iii. Disconnect the 22 pin
cable from the decode
board
iv. Release the interface
board by carefully
pushing back on the
“Board Clips” and
pulling forward on the
interface board.
v. Release the RJ45
housing by carefully
pulling up on the
housing where the
communication cable is
inserted.
22 Pin
Connection
Case Notch
Board Clips

vi. Once the housing
is released, the
interface board
assembly can be
removed through
the RJ45 housing
hole.
vii. Disassembly of the
1650A is now
complete.
22 Pin
Connection 10 Pin
Connection

d. Assembly
i. Connect an RJ45 housing assembly 10 pin flex cable to the connector on
the interface board. If the 10 pin cable is not folded as shown above,
fold it per the diagram below.
ii. Folding the cable prior to installing allows for easier cable routing

iii. Connect the 22 pin
cable to the
interface board as
shown.
iv. Apply two dabs of
RTV onto the 10
Pin connector as
shown in the two
images. Be sure to
have the RTV
contact the
connector body
AND the latch.
22 Pin
Connection 10 Pin
Connection
Close-up of RTV application

v. Insert the interface
board into the housing
connector hole
vi. Snap the interface board in place as shown
vii. Dress the 10 pin cable as shown
Flex UNDER
corner of RJ45
connector housing
Flex UNDER
trigger
Bottom groove
Case Notch
Board Clips