CMT-C5, HCD-C5 - Sony Audio Service Manual (repair manual). Page 40

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Mode which sets the adjustment results recorded in the non-volatile memory
to the initial setting value. However the results of the temperature compen-
sation offset adjustment will not change to the initial setting value.
If initial setting is performed, perform all adjustments again excluding the
temperature compensation offset adjustment.
For details of the initial setting, refer to “4. Precautions for Adjustments”
(See page 36) and execute the initial setting before the adjustment as re-
quired.

Procedure:
1. Press the . 

“R”

or >

  “R”

button to display “ADJ

CLEAR”  (C28).

2. Press the

ENTER/YES  “R”

button.  “Complete!” will be

displayed momentarily and initial setting will be executed, after
which “ADJ CLEAR” (C28) will be displayed.

The IOP data can be recorded in the non-volatile memory. The IOP
value on the optical pick-up label and the IOP value after the
adjustment will be recorded. Recording these data eliminates the
need to read the label on the optical pick-up.

Recording Procedure:
1. Press the  . 

“R”

  or  >

 “R”

  button to display “Iop Write”

(C05), and press the  

ENTER/YES “R”  

button.

2. The display becomes “Ref=@@@.@” (@ is an arbitrary

number) and the numbers which can be changed will blink.

3. Input the IOP value on the optical pick-up label.

To select the number : Press the  . 

“R”

  or  >

 “R”

  button.

To select the digit

: Press two buttons of   

VOL -

   and

CD 

Z  simultaneously.

4. When the  

ENTER/YES  “R”   

button is pressed, the display

becomes “Measu=@@@.@” (@ is an arbitrary number).

5. As the adjustment results are recorded for the step 4 value. Leave

it as it is and press the  

ENTER/YES “R”  

button.

6. “Complete!” will be displayed momentarily. The value will be

recorded in the non-volatile memory and the display will become
“Iop Write” (C05).

Display Procedure:
1. Press the  . 

“R”

  or  >

  “R”

  button to display “Iop

Read”(C26) and press the  

ENTER/YES “R”  

button.

2. “@@.@/##.#” is displayed and the recorded contents are

displayed.
@@.@ indicates the IOP value on the optical pick-up label.
##.# indicates the IOP value after adjustment

3. To end, press the  

MENU/NO “R”

  button to display “Iop Read”

(C26).

Save the temperature data at that time in the non-volatile memory
as 25 ˚C reference data.

1. Usually, do not perform this adjustment.
2. Perform this adjustment in an ambient temperature of 22 ˚C to 28 ˚C. Per-

form it immediately after the power is turned on when the internal tempera-
ture of the unit is the same as the ambient temperature of 22 ˚C to 28 ˚C.

3. When D101 has been replaced, perform this adjustment after the tem-

perature of this part has become the ambient temperature.

Procedure:
1. Press the  

. 

“R”

    or

    >

  “R”

  button to display “TEMP

ADJUST” (C03).

2. Press the  

ENTER/YES  “R”

   

button to select the “TEMP

ADJUST” mode.

3. “TEMP =     [OK]” and the current temperature data will be

displayed.

4. To save the data, press the  

ENTER/YES “R”

  

button.

When not saving the data, press the

  

MENU/NO “R”

  

button.

5. When the  

ENTER/YES “R”

  

button is pressed, “TEMP =   

SAVE” will be displayed and turned back to “TEMP ADJUST”
(C03) display then. When the

  

MENU/NO “R”

  

button is pressed,

“TEMP ADJUST” (C03) will be displayed immediately.

Specified Value:
The “TEMP =    ” should be within “E0 - EF”, “F0 - FF”, “00 -
0F”,  “10 - 1F” and “20 - 2F”.

Before starting adjustment;
The laser power adjustment value changes depending upon the types
of the optical pick-up (KMS-260B or KMS-260E).
Check the type of the optical pick-up before starting adjustment.
(See the illustrations “The method of identifying the optical pick-
up on page 41.)
Check the IOP value of the optical pick-up before adjustments.
(Refer to 8. Recording and Displaying the Iop Information)

Procedure:
1. Insert the laser power meter probe into the disc insertion slot

and set it on top of the objective lens of the optical pick-up.
(When it cannot be set properly, press the  

m

 “R”

  button or

M

 “R”

  button to move the optical pick-up)

Connect the digital voltmeter to CN105 pin 1 (I+3V) and
CN105pin 2 (IOP) on the BD (MD) board.

2. Press the  

. 

“R”

  or

    >

 “R”

  button to display “LDPWR

ADJUST” (C04).
(Laser power : For adjustment)

3. Press the  

ENTER/YES “R”

  

button once to display “LD 0.9 mW

$    ”.

4. Press the  

. 

“R”

  or  

>

 “R”

  button until the laser power

meter reading matches with the specified value as described in
the following table.

Press the  

ENTER/YES “R”

  

button after setting the range knob

of the laser power meter, and save the adjustment results.
(“LD SAVE $    ” will be displayed for a moment)

5. Then “LD 7.0 mW $    ” will be displayed.

+
–

BD (MD) board

digital voltmeter

CN105 pin 

1

 (I+3V)

CN105 pin 

2

 (IOP)

Optical pick-up
objective lens

laser
power meter

KMS-260B
KMS-260E

0.85 to 0.91 mW
0.90 to 0.96 mW