Toshiba Estudio 162 Owners Manual

e-STUDIO162/162D/151/151D  DISASSEMBLY AND ASSEMBLY  8 - 18
8. Power section
A. List
B. Disassembly procedure
1) Disconnect each connector.
2) Remove the screw, and remove the earth line.
3) Remove two screws, and remove the power PWB unit.
Caution: Be careful not to touch the sharp edge on the circumference
of the metal frame for the power supply.
C. Assembly procedure
For assembly, reverse the disassembly procedure.
9.Duplex motor section (Duplex model only)
A. List
B. Disassembly procedure
1) Remove...

e-STUDIO162/162D/151/151D ADJUSTMENTS  9 - 1
[9] ADJUSTMENTS
1. Optical section
A. Copy magnification ratio adjustment
The copy magnification ratio must be adjusted in the main scanning
direction and in the sub scanning direction. To adjust, use TC 48-01.
(1) Outline
The main scanning (front/rear) direction magnification ratio adjustment
is made manually.
The adjustment is made by manual key operations. (The zoom data
register set value is changed for adjustment.)
The magnification ratio in the sub...

e-STUDIO162/162D/151/151D ADJUSTMENTS  9 - 2 2) Set the copy magnification ratio to 100%.
3) Make a copy on A4 or 81/2 x 11 paper.
4) Measure the length of the copied scale image.
5) Calculate the sub scanning direction copy magnification ratio
using the formula below.
6) Check that the actual copy magnification ratio is within the
specified range. (100 ± 1.0%).
If it is not within the specified range, perform the following
procedures.
7) Execute TC 48-01 to select the sub scanning direction copy...

e-STUDIO162/162D/151/151D ADJUSTMENTS  9 - 3 (Example)
(2) Image rear edge void amount adjustment
1) Set a scale to the rear edge section of A4 or 11 x 8 1/2 paper size
as shown in the figure below, and cover it with B4 or 8 1/2 x 14
paper.
2) Execute TC 50 - 01 to select the image rear edge void amount
adjustment mode.
The set adjustment value is displayed on the copy quantity display.
3) Make a copy and measure the void amount of image rear edge.
4) If the measurement value is out of the specified...

e-STUDIO162/162D/151/151D  ADJUSTMENTS  9 - 4
C. Necessary tool for copy density adjustment
• One of the following test charts:
KODAK GRAY SCALE
 B4 (14 x 8 1/2) white paper
 The user program AE setting should be 3.
Test chart comparison table
D. Features of copy density adjustment
For the copy density adjustment, the image data shift function provided
in the image process LSI is used.
List of the adjustment modes
E. Copy density adjustment procedure
The copy density can be adjusted in 300dpi or in...

e-STUDIO162/162D/151/151D  ADJUSTMENTS  9 - 5
3. High voltage adjustment
A. Main charger (Grid bias)
Note:
• Use a digital multi meter with internal resistance of 10M
Ω or more
measurement.
 After adjusting the grid LOW output, adjust the HIGH output. Do not
reverse the sequence.
Procedures
1) Set the digital multi meter range to DC700V.
2) Set the positive side of the test rod to the connector CN11-3
(GRID) of high voltage section of the power PWB and set the
negative side to the frame ground (power...

e-STUDIO162/162D/151/151D ADJUSTMENTS  9 - 6
B. Adjusting trailing edge void in duplex copy mode
This is the adjustment of the first surface printing mode (rear end void)
in duplex copying.
In a duplex copying operation, the paper is delivered starting from the
rear end of the first printing surface. It is therefore necessary to make a
void area at the rear end on the first printing surface to prevent paper
jam at the fusing part.
There are two adjustment modes:
1) Image cut rear end void quantity...

e-STUDIO162/162D/151/151D  ADJUSTMENTS  9 - 7
5. ADF (RADF) scan position automatic 
adjustment (With optional ADF/RADF 
installed)
Place a black chart so that it covers the ADF scan glass and the OC
glass together, and close the OC cover.
When test command 53-08 is executed, the current adjustment value
is displayed as the initial display.
* Default is 1. Adjustment range is 1 – 99. Adjustment unit 1 = about
0.127mm
* If the values are kept as the default values, ADF scan is not per-
formed properly....

e-STUDIO162/162D/151/151D  ADJUSTMENTS  9 - 8
7. Automatic black level correction
a. Cases when the adjustment is required
1) When the main PWB is replaced.
2) When the EEPROM in the main PWB is replaced.
3) When U2 trouble occurs.
4) When repairing or replacing the optical section.
b. Adjustment procedure
Used to acquire the black level target value used for the black level
adjustment of white balance. 
When test command 63-02 is executed, the current correction value is
displayed in 3 digits of 12bit...

e-STUDIO162/162D/151/151D  TEST COMMAND, TROUBLE CODES  10 - 1
[10] TEST COMMAND, TROUBLE CODES
1. Entering the test command mode
To enter the serviceman test command mode, press the keys as follows:
[#] key 
→ [*] key → [C] key → [*] key
To cancel the test command mode, press the [CA] key.
2. Key rule
3. List of test commands
[10KEY]: Entry of MAIN CODE/SUB CODE
Selection of an item
Setup of an adjustment value in case of test commands for adjustment
[
←/→]: Selection of MAIN CODE/SUB CODE 
Selection of...