CANON EOS-1V Electrical Adjustments

Part 4

Electrical

Adjustments

1. ELECTRICAL ADJUSTMENTS

1.1 CAUTIONS

• The EOS-1V’s FPU IC has a flash ROM.
The flash ROM has a limited durability
(rewriteable up to 20 times officially and
over 50 times in actuality). If it is writ­ten excessively, it may damage the FPU.
If the screen on the right appears, do
not rewrite the data needlessly. The
camera's FPU firmware, basic AF
adjustments, and exposure program are
written in the flash ROM.

• When data is written in the flash ROM a number of times, the output may
decrease. To restore the output to nor mal, select "F10: Exit" to refresh the flash
ROM. Since refreshing the flash ROM overwrites the data, it does not deteriorate
the flash ROM.

• The EOS-1V adjustment software program requires about 800 KB of disk space.
Each time the camera's data is read, more disk space is consumed. Data (all data,
AF data only, data except the AF data, or EOS Link data) transferred from up to
five EOS-1V cameras can be stored. Storing all the data from five cameras will
require over 2 MB of disk space. Before using the adjustment software, first install
it in the personal computer's hard disk. (It can run on a 1.4 MB disk, but an error
will occur when the disk space runs out.) To install the software in a Windows
95/98 system, refer to the Service Manual Report AG1-054.

• Install the adjustment software onto the hard disk. This is to facilitate the data
transfer of the front panel unit or camera’s firmware. It will also make the adjust­ment faster.

• If the HS-I/F is used, additional memory is required. Install the Expanded Memory
Unit (CY9-7082-002). Installation instructions are included with the unit.

• With earlier EOS cameras, the AF unit alone could be replaced. However, as with
the EOS-3, this is not possible with the EOS-1V. If the AF unit must be replaced,
the front panel must be replaced. Aging has been executed for the spare front
panel units, but not basic AF adjustments.

• New main flexible board units are already written with initialization data.
Therefore initialization is not necessary.

4-1

Part 4: Electrical Adjustments

FLASH_NG

Flash ROM data writing has been made

25

times.

Flash ROM data writing exceeds 20 times.

Data should be stored.

Press space bar to return to previous sctreen.

Press RETURN to continue Adjustment.

1.2 DESCRIPTION OF ELECTRICAL ADJUSTMENTS

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Part 4: Electrical Adjustments

Shutter adjustment
SPC positioning
AE adjustment
AE shift

Basic AF adjustments
AF focusing

adjustment
Image data output

Defocus output
Simple check of AF

sensor
AF sensor cleaning
Flash metering

adjustment
Inhibit voltage

adjustment
Display adjustment

Self check

Data transfer

FPU firmware
transfer

Temperature
adjustment

Shot count reset

Shutter speed adjustment.
Adjustment and check of AE sensor position.
Adjustment of the AE sensor’s output.
Enables exposure shifting in 1/8-stop increments to suit cus-

tomer preferences.
Adjustment to optimize the AF sensor’s output.
Adjustment to set the optimum focusing position.

The AF sensor’s output data is used for waveform and chart
setting and to check the AF precision.

Displays the focusing data.
Execute a simple check of the AF sensor.

This is to clean the AF sensor.
TTL and E-TTL adjustments and flash metering sensor output

adjustment.
Sets the camera’s inhibit voltage.

Adjusts the position and brightness of the superimposed dis­play.

Lights the entire LCD, clears error codes, and displays the
error No.

Enables camera data initialization, data saving, and data
transfer.

Used when the FPU program is to be upgraded.

Adjusts the camera’s temperature sensor.

Clears the shutter counter or sets the desired shot count.

1.3 ADJUSTMENTS AFTER PARTS REPLACEMENT

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Part 4: Electrical Adjustments

Shot Counter Reset

FPU Firmware

SI Brightness Adjustment

SI Position Adjustment

Error No. Display

Error Code Clearing

LCD Check

E-TTL Level Check

E-TTL Level Adjustment

Basic E-TTL Adjustments

TTL Level Adjustment

Basic TTL Adjustments

Front Panel Operation
Count Reset

AF Cleaning

AF Self Check

Focusing (Overall)

Basic

Exposure Program
Rewriting

Shift

Precision

SPC

Curtain Closing
Check/Adjustment

Shutter Adjustment/
Curtain Closing Adjustment

PDB

2 CR5

Overall Correction

Main
Flexible
Board
CG1-3740
(No data
reading)

Main
Flexible
Board
CG1-3740
(Data
reading)

AF
Focusing
Inspection

Shutter
Curtains
CY3-1235
CY3-1236

System
Connector
Unit
(CG1-3728)

SLC Unit
(CG1-3737)

Shutter
Unit
(CG1-3707)

Front
Panel Unit
(CG1-3710)

Data

Transfer

DisplaySelf CheckFlash ExposureAFShutterInhibit Voltage



AE

Temperature Correction
compensation

Initialization

●2

●3

●4

●1

●5

●6

●7

●8

●9

●3

●2

●1

●1

●2

●1

●1

●1

▲▲

▲

▲

▲

▲

Notes: Execute only when necessary.

Execute temperature correction immediately after initialization.

▲

1.4 ADJUSTMENT SOFTWARE FOR THIS CAMERA

1) Adjustment Software Start-up

The adjustment software’s file name is EOS1V.EXE. If a work disk is made, the soft­ware will start-up automatically with the AUTOEXEC.BAT file.
NOTE: If a transmission error occurs frequently, decrease the transmission speed by

typing "EOS1V /9" (type a space before the slash) and pressing Return when
the program starts up. This is to make errors less prone to occur.

2) Operating the Adjustment Software

You can execute most adjustment software operations with the Return (or Enter)
key, space bar, and cursor keys. Just follow the on-screen instructions.

3) Tools

The adjustment software is compatible with both Multiple Tool II and HS-I/F.
Although this manual and the software’s on-screen instructions will refer to
Multiple Tool II, HS-I/F can also be used instead of Multiple Tool II. However, the
HS-I/F will require additional memory (CY9-7082-002).

4) Connecting the Camera to Multiple Tool II or HS-I/F.

Fig. 4-1 Connecting the camera to a personal computer.

4-4

Part 4: Electrical Adjustments

If the HS-I/F is used, the memory must be increased.

CAUTION

5) Start-up Procedure

Insert the work disk into the personal com­puter and turn on the personal computer.
The screen shown on the right will appear. If
the software has been installed on the hard
disk, type “EOS1V.”

Follow the on-screen instructions and turn
on Multiple Tool II or HS-I/F. If it has
already been turned on, tur n it off and on
again.

When the personal computer has been con­nected to Multiple Tool II or HS-I/F, the
adjustment software will display the screen
on the right.

Follow the on-screen instructions to connect
the camera, then turn on the camera’s main
switch.

After the connection is completed, press the
Return key.

To communicate with the camera, it may be
necessary to turn the camera’s Main Dial to
turn on the camera. Just follow the adjust­ment software’s on-screen instructions.

If you do not turn the Main Dial within 1
minute, a communication error will occur.

The adjustment software will check whether
communication with the camera has been
established. After this is completed, the fol­lowing will be displayed on the screen as
shown on the right: Shutter’s shot count,
front panel unit’s operation count, camera’s
ROM version, error code, and the lens that
was being used when the error occurred.

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Part 4: Electrical Adjustments

POWON

Ver.1.0

Turn on the Multiple Tool II or HS-I/F.

If it is already on,

press the HS-I/F’s Reset switch.

(To cancel, press the ESC key.)

Copyright Canon Inc. 2000.03

EOS-1V

SET

Connect the camera.

Then turn on the camera's Main Switch.

Press the Return key.

WakeUP

Either turn the Main Dial

or press the AE lock button.

Pressing the shutter button halfway

will cause a communication error.

Pressing the shutter button
halfway (SW1) or completely
(SW2) will cause an error to
occur.

NOTE 1

The ROM software is compatible with the 313A2E or later MPU, 2B0111 or later FPU,
and OA or later BPPU. (When the camera back is open, "00" will be displayed for the
BPPU version.) It keeps a record of the last ten errors that have occurred. This record of
errors can be deleted by selecting the "Delete Error Codes" option.

For details on the error codes, see Chapter 2's "5. Error Code Display."

* If "Other Manufacture" is displayed for the lens designation, it indicates that an error

occurred with a non-Canon lens.

4-6

Part 4: Electrical Adjustments

Past9 : None NONE
Past8 : None NONE
Past7 : None NONE
Past6 : None NONE
Past5 : None NONE
Past4 : None NONE
Past3 : None NONE
Past2 : None NONE
Past1 : 8 Faulty transmission with lens 129 EF300mm F2.8L USM
Latest:12 Abnormal mirror lockup 135 EF200mm F1.8L USM

POWON2

Shutter shot count:

Front panel operation count:

ROM version:

10
10
MPU:313A2E, FPU:2B0111, BPU:0A

To return to the main menu, press Return.
To exit the program, press the space bar.

EOS-1V

Error Codes

If the shutter's shot count and front panel operation count are not the same, it
means that the front panel has been replaced before.

Error Code No. Error Code description Lens ID No. Lens designation

For the EOS-1V electrical adjustment,
Multiple Tool II or HS-I/F with ROM version

1.1 or later is required.
If you are not using Multiple Tool II or HS-

I/F with ROM version 1.1 or later, the
adjustment software will display the message
shown on the right.

If you use HS-I/F, additional memory will be
necessary. If it does not have additional
memory, the message shown on the right will
appear.

Also, if a camera other than the EOS-1V has
been connected or if the camera ROM version
is incompatible, the adjustment software will
display the message shown on the right.

4-7

Part 4: Electrical Adjustments

ERRHSVER

Press any key to quit.

The HS-I/F’s ROM version is not 1.1 or later.

This adjustment software requires

ROM version 1.1 of HS-I/F or later.

ERRCAM

Press any key to quit.

The camera is not an EOS-1V

This adjustment software is compatible

only with the EOS-1V.

ERRMEM

Press any key to quit.

The HS-I/F's memory has not been expanded.

The HS-I/F requires additional memory.

To expand the memory,

install expanded memory unit (CY9-7082-002).

ERRCVER

Press any key to quit.

This EOS-1V's ROM version is

This adjustment software is not compatible

with this camera's ROM version.

6) Ending Operation

The EOS-1V has a flash ROM. To better
ensure that the flash ROM data is saved
properly, select F10 END. The screen on the
right then appears.

If you have executed AF adjustment and ini­tialization, follow the on-screen instructions
to rewrite the flash ROM.

After the flash ROM refresh program is
transmitted, the screen on the right appears.

Press the shooting mode button and meter­ing mode button simultaneously, then press
the Exposure Compensation button. Keep
pressing the Exposure Compensation button
for about 1 second.

The program will end after about 1.5 minute.
Then remove (reset) the camera’s power
source and reinstall it again. Press the
Return key to cancel the program.

4-8

Part 4: Electrical Adjustments

F_REF

Flash ROM will be refreshed.

Flash ROM refresh is required when data is written

to flash ROM several times to store the data safety.

To give stability to the data, Flash ROM refreesh should be caried

out even though no data is written to Flash ROM.

Carry out after all adjustments are competed.

To carry out Flash ROM Refresh, press space bar.

To close the adjustment, press RETURN.

Flash ROM Refresh

F_REF_S

Flash ROM Refresh will be carried out.

To start the job, hold ’MODE mode’ and ’METERING mode’,

then press ’Exposure Compensation’ button.

When Film loaded indicator on LCD panel stops, Press RETURN.

DO NOT press RETURN during operation.

Job will be completed when counter reaches ’03FF’.

When job completed,

remove power supply of camera once and reset it.

Then, press RETURN.

Camera returns to be normal condition.

Flash ROM Refresh

• Refreshing the flash ROM overwrites the data. Therefore, it will not dam­age the flash ROM.You should refresh the flash ROM in all cameras
brought in for repair.

CAUTION

7) Adjustment Software Menu Configuration

Fig. 4-2 Adjustment software menu configuration 1.

4-9

Part 4: Electrical Adjustments

SPC Positioning

AE Accuracy Adjustment

AE Shift

Basic AF Adjustments (Flash ROM)

AF Focus Adjustment Menu

Image Data Transfer

Focus Data Output

AF Sensor Self Check

Flash Exposure Adjustment Menu

Basic A-TTL Adjustment

A-TTL Level Adjustment

Basic E-TTL Adjustment

E-TTL Level Adjustment

Inhibit Voltage Menu

Overall Correction

Grip (2CR5)

PDB-E1, PB-E2 (size-AA batteries)

PB-E2 + NP-E2 (Nickel-hydride pack)

AF Sensor Cleaning

Main Menu

Shutter Adjustment Menu

AE Adjustment Menu

AF Adjustment Menu

Shutter Adjustment/Shutter Curtain Closing Adjustment

Shutter Curtain Closing Check & Adjustment

F1

F2

F1

F2

F3

F3

F4

F5

F1

F2

F1

F2

F3

F4

E-TTL Precision Check

F5

F1

F2

F3

F4

F1

F3

F4

F2

F5

F6

Overall AF Adjustment

Uniform AF Shift

F1

F3

Front Panel Operation Count Reset

F7

Exposure Program Rewriting (Flash ROM)

F4

Fig. 4-3 Adjustment software menu configuration 2.

4-10

Part 4: Electrical Adjustments

Initialize

Data Storage (All data)

Temperature Correction

LCD Check

Delete Error Code

Reset Shot Count

Initialize All Data

Initialize AF Data

Self-Check Menu

Initialize Settings Data

Initialize EOS LINK Data

Save Data (All data)

Transfer Data (All data)

Save Data (Except AF data)

Transfer Data (Except AF data)

Save Data (AF data only)

Transfer Data (AF data only)

Save Data (EOS Link data)

Transfer Data (EOS Link data)

Rewrite FPU Firmware (Flash ROM)

End

Initialize/Data
Transfer Menu

SI Brightness Adjustment

SI Position Adjustment

F6

F1

F2

F8

F1

F2

F1

F2

F4

F3

F1

F2

F4

F5

F6

F8

F7

F3

F9

F10

F1

F2

F8

F9

F10

Display Error Code

F3

Display Related Menu

(Flash ROM)

(Flash ROM)

(Flash ROM)

(Flash ROM)

(Flash ROM)

(Flash ROM)

1.5 SHUTTER ADJUSTMENT

PURPOSE

To adjust the shutter speeds. If the fastest shutter speed meets the standard, it
means that all the shutter speeds have been properly adjusted. Also, as the
shutter speeds are adjusted, the shutter curtain closing adjustment is executed
automatically.

Definition of Shutter Curtain Closing Adjustment
If there is a problem with the shutter and the shutter curtains run without

opening, a warning is issued to the user. The camera measures the time from
the X-sync ON timing to the CN2 (second curtain switch) ON timing. If the time
fails to meet the standard, a BC error (error No. 21) is displayed.

STANDARDS

At a shutter speed of 1/8000 sec.:
Center time: 0.122 ms
Standard range: 0.086 - 0.173 ms
Shutter curtain speed: 2.2 ms

TOOLS

EF-8000
EF 50mm f/1.8 lens (commercially available)

PREPARATIONS

1) Attach the EF 50mm f/1.8 lens to the camera and set up the EF-8000 as shown
in the figure. Set the EF-8000 to the shutter speed measurement mode.

2) Start up the adjustment software and connect the camera to Multiple Tool II (or
HS-I/F). On the Main Menu, select [F1] shutter adjustment. Set the camera to
manual mode, shutter speed to 1/8000 sec., and aperture to f/1.8.

Fig. 4-4 Shutter adjustment.

4-11

Part 4: Electrical Adjustments

Shutter curtain travel time is not adjustable. If the curtain travel times fail to
meet the standard, the shutter unit must be replaced.
Curtain Travel Time Standards
First curtain: 2.2 +/-0.1 ms
Second curtain: 2.2 +/-0.1 ms

CAUTION

EF-8000

Attach EF 50mm f/1.8 lens.

ADJUSTMENT PROCEDURE

1) Measure the shutter speed. Move the
cursor to the measured value, then
press Return.

After transmitting to the camera, the
shutter’s correction value will be writ­ten.

• Pressing ESC will write in the stan­dard value (default). Do this if some­thing goes wrong with the measure­ment.

2) After the transmission is completed,
measure the shutter speed to check it.
If it fails to meet the standard, press
the space bar and do the adjustment
again.

• The “measurement range” is the cur­rent measurement’s adjustment refer­ence. If the measured value is way off
from this measurement range, the set­tings or shutter unit might be faulty.

3) Next is the shutter curtain closing
adjustment. Follow the on-screen
instructions and release the shutter
10 times or more. After releasing the
shutter, press the Return key.

4) The optimum shutter curtain closing
time is set automatically.

If the difference between the MAX and
MIN values is over 150µs, the shutter
is probably faulty.

NOTE:
MAX and MIN values are the longest

and shortest X-sync On to CN2 On
times measured during the adjust­ment. The correction value is the one
written to the camera.

4-12

Part 4: Electrical Adjustments

SHU4

Shutter has been released 12 times.

Reference Data is adjusted as follows:

MIN 00000 µs, MAX 00000

µs

Difference between MIN and MAX is 00000

µs

Compensation 0000

(If the difference between MIN and MAX is greater than 150 µs,

replacing Shutter Unit is recommended.)

Release the shutter several times
and check that BC error does not arise.
Press RETURN to return to Shutter Menu.

Shutter

Adjustment

SHU1

Measure the 1/8000 shutter speed.

Move the cursor under speed recorded.

Press RETURN to make correction.

Press SPACE bar to return to MAIN MENU screen.

Press ESC key to enter

the Standard value (default value).

Shutter

Adjustment

0.086

- 0.173mS

♦

0.122

0.244 0.488ms0.0610.030

Limit:

SHU2

Measure the shutter speed at 1/8000 sec.

Standard: 0.086 - 0.173 ms

Center value: 0.122 ms

Within the measurement range of 256-1280,

the current value is 512.

If it is OK, press Return.

If it is not OK,

press the space bar and do the adjustment again.

Shutter Adjustment

SHU3

Shutter Adjustment

Shutter curtain operation adjustment

will be carried out.

Release shutter more than 10 times.

After releasing, press RETURN.

Shutter

Adjustment

1.6 SHUTTER CURTAIN CLOSING ADJUSTMENT

PURPOSE

Checking and executing the shutter curtain closing adjustment if BC error 21
occurs often.

1) Follow the on-screen instructions as
shown on the right, and release the
shutter 10 times or more. Then press
the Return key.

2) The shutter curtain closing value
when it was adjusted the last time
and the currently measured shutter
curtain closing value are displayed.
Either press the Return key to write
the currently measured value to the
camera or press the space bar to not
write it to the camera.

NOTE:
If the previous correction value and

the current correction value differ
greatly, BC error 21 is less prone to
occur. This is because the shutter’s
characteristics are different from the
time of the last adjustment.

4-13

Part 4: Electrical Adjustments

SHU_MENU

The Shutter has been released 12 times.

Reference Data is adjusted as follows:

MIN 230 µs, MAX 270 µs

Difference between MIN and MAX is 40 µs

The previous compensation value is -646.

The current compensation value is 8.

(If the difference between MIN and MAX is greater than 150 µs,

replacing Shutter Unit is recommended.)

Press RETURN key to execute the adjustment.

Press SPACE bar to return to Shutter Menu

without writng the adjusted data.

Shutter

Adjustment

SHU3

Shutter Adjustment

Shutter curtain operation adjustment

will be carried out.

Release shutter more than 10 times.

After releasing, press RETURN.

Shutter

Adjustment

• Before executing the shutter curtain closing adjustment, be sure to exe­cute the shutter adjustment.

• If BC error 21 occurs often, the shutter is probably faulty. Replacing the
shutter is recommended. (When the MAX and MIN values differ greatly.)

CAUTION

1.7 X-SYNC TIME LAG CHECK

PURPOSE

To check that the shutter curtains are fully open when the flash fires. This can­not be adjusted. Perform this check if the user complains that part of the flash
picture looks dark. If the shutter curtains do not meet the standard, replace the
shutter.

STANDARDS

Shutter speed: 1/250 sec.
Value A: 0.18 ms or longer (Time from the start of the 1st curtain until X-sync

ON)

Value B: 1.50 ms or longer (Time from X-sync ON to the closing of 2nd curtain)

TOOLS

EF-8000 or EF-5000
X-sync time lag checking shoe

CHECK PROCEDURE

1) Set the shutter speed to 1/250 sec. in the shutter speed-priority AE mode or
manual mode.

2) Make the connections as shown in the figure below, and set the EF-8000 or EF­5000 to the DELAY mode. Then execute the measurement.

Fig. 4-5 Checking the X-sync time lag.

4-14

Part 4: Electrical Adjustments

4.7k
ohm

RED ( X )

BLACK ( GND )

To EF8000

Acc. shoe tool

DELAY

A

B

C

EF8000

RED ( X )

BLACK ( GND )

To Acc. Shoe tool

EF - 8000

1.8 SPC POSITIONING

PURPOSE

To align the SPC’s center with the camera’s optical axis. This can be done with
or without Multiple Tool II (or HS-I/F). If you do not use Multiple Tool II (or HS­I/F), a bright penlight and expert skill will be required.

• Procedure Without Using Multiple Tool II or HS-I/F

TOOLS

Bright penlight
EF 50mm f/1.8 lens
Instant glue

PREPARATIONS

1) Attach the EF 50mm f/1.8 lens to the camera.

2) While following the procedure for AF sensor positioning, use your hand to cover
the viewfinder and illuminate the SPC’s side (clear portion) with the penlight.

3) Look through the lens and move the penlight so you can see the SPC’s S0 and
other border lines. When doing this, cover the viewfinder so that the center
focusing point in the viewfinder is faintly visible. Also, keep the penlight at a
fixed position. This will make it easier to move the SPC.

ADJUSTMENT PROCEDURE

1) Move the SPC so that the SPC’s S0 aligns with the viewfinder’s center focusing
point.

2) Make fine adjustments so that it aligns with the center of the viewfinder’s left
and right focusing points.

Fig. 4-6 SPC positioning.

4-15

Part 4: Electrical Adjustments

This procedure requires expert skill. Until you become an expert at it, follow
the procedure which uses the Multiple Tool II or HS-I/F to perform a final
check.

CAUTION

S0

• Procedure Using Multiple Tool II or HS-I/F

TOOLS

EF-8000 or EF-5000
EF 50mm f/1.8 lens
SPC positioning mask (Same one for EOS Rebel X/Rebel XS/500/Kiss)
Instant glue

PREPARATIONS

1) Attach the EF 50mm f/1.8 lens to the camera. Mount the camera on a tripod
and point it at the light source. Also, cover the SPC with a black cloth to block
any stray light.

2) Start up the adjustment software and connect the camera to the Multiple Tool II
or HS-I/F. On the Main Menu, select [F2] AE Adjustment Menu.

3) Affix the SPC positioning mask on the EF-8000 or EF-5000 light source. Set the
brightness to LV15.

4) Place the camera 45 cm away from the positioning mask. Align the viewfinder’s
center focusing point with the center of the mask. Also, focus manually.

Fig. 4-7 SPC positioning.

4-16

Part 4: Electrical Adjustments

Before proceeding with this adjustment, do the [F2] AE precision adjust­ment first as a temporary adjustment. Also, after completing this adjust­ment, do the [F2] AE precision adjustment as the final adjustment.

CAUTION

EF-8000

45cm

EV15

Adjustment mask

Partial metering circle

Center focusing point