Servicing Note - Sony MHC-MG110 Manual

HCD-MG110/MG310AV
Ver 1.1 2001.05
CD-TEXT TEST DISC
This unit is able to display the test data (character information)
written in the CD on its fluorescent indicator tube.
The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used
for checking the display.
To check, perform the following procedure.
Checking Method:
1. Press the button to turn the power on, set the disc to the
I/ 1
disc table with the "test disc" label facing up, and chuck the
disc.
[CD]
2. Press the button to set CD function, and press the
to playback the disc.
3. The following will be displayed on the liquid crystal display.
Display : 1KHZ/0DB/L R
[-- ] [
4. Pressing the . or >
data of each track will be displayed.
For details of the displayed contents for each track, refer to "Table
1: CD-TEXT TEST DISC TEXT Data Contents".
Restrictions in CD-TEXT Display
In this unit, some special characters will not be displayed prop-
erly. These will be displayed as a space or a character resembling
it.
Table 1: CD-TEXT TEST DISC TEXT Data Contents
(TRACKS No. 1 to 20:Normal Characters)
TRACK
No.
1 1kHz/0dB/L&R
2 20Hz/0dB/L&R
3 40Hz/0dB/L&R
4 100Hz/0dB/L&R
5 200Hz/0dB/L&R
6 500Hz/0dB/L&R
7 1kHz/0dB/L&R
8 5kHz/0dB/L&R
9 7kHz/0dB/L&R
10 10kHz/0dB/L&R
11 16kHz/0dB/L&R
12 18kHz/0dB/L&R
13 20kHz/0dB/L&R
14 1kHz/0dB/L&R
15 1kHz/–1dB/L&R
16 1kHz/–3dB/L&R
17 1kHz/–6dB/L&R
18 1kHz/–10dB/L&R
19 1kHz/–20dB/L&R
20 1kHz/–60dB/L&R
Note: Track No. 21 to 99 are not displayed.
4
SECTION 1
SERVICING NOTES
n N
+]
button, select the track. The text
Displayed Contents
MODEL IDENTIFICATION
– REAR VIEW –
MODEL NO.
COMPACT DISC DECK RECEIVER
button
MADE IN CHINA
US, Canadian models: AC: 120V 60Hz
Australian Model: AC: 220–240V-50/60Hz
CLEANING OBJECTIVE LENS OF OPTICAL PICK-UP
• In cleaning the objective lens of optical pick-up, be sure the
following below.
optical pick-up
bracket (top 60) hole
3 Put a cotton bud into
the hole on the bracket
(top 60) and clean the
OP lens.
Note 1. In cleaning the lens, do not apply an excessive force.
As the optical pick-up is vulnerable, application of excessive
force could damage the lens holder.
Note 2. In cleaning, do not use a cleaner other than exclusive cleaning
liquid (KK-91 or isopropyl alcohol).
Note 3. Wipe the objective lens spirally from center toward outside. (See
Figure A)
[][][][][]
HCD-MG
2 Remove the
magnet assy.
A
1 Open the torsion holder
(magnet) in direction of
arrow A.
(Figure A)