CMT-EH15, HCD-EH15 - Sony Audio Service Manual (repair manual). Page 9

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HCD-EH15
9
SECTION  4
TEST  MODE
COLD  RESET
The cold reset clears all data including preset data stored in the 
memory to initial conditions. Execute this mode when returning 
the set to the customer.
Procedure:
1.  Press three buttons of [
x
], [
l
 
m
 – TUNING] and [
?/1
simultaneously.
2.  When “RESET” appears, the set enters standby status.
PANEL  TEST
Procedure:
1.  Press the [
?/1
] button to turn the power on.
2.  Press three buttons of [FUNCTION], [TUNER/BAND], and 
[
?/1
] simultaneously.
3.  When the panel test is activated, [STANDBY] LED and seg-
ments on the liquid crystal display are all turned on.
4. Press 
the 
[CD 
u
] button, date and version are displayed. For 
example, “1115V002”.
5.  Press the [TUNER/BAND] button, model name and destination 
are displayed. For example, “EH15ASIA”.
6.  To release from this mode, press three buttons of [FUNCTION], 
[TUNER/BAND], and [
?/1
] simultaneously.
TUNER  STEP  CHANGE 
(Except AEP, Russian and UK models)
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1.  Press the [
?/1
] button to turn the power on.
2.  Press the [TUNER/BAND] button to select TUNER (AM) 
function.
3.  Press the [
?/1
] button again to turn the power off (standby).
4.  After pressing the [DISPLAY] button on the remote command-
er, while pressing the [TUNING + 
M
 
L
] button, press the 
[
?/1
] button.
5.  It turns power on and display “9K STEP” or “10K STEP”, and 
thus the tuning interval is changed over.
CD  SERVICE  MODE
This mode can move the SLED of the optical pick-up, and also can 
turn the optical pick-up laser power on and off.
Procedure:
1.  Press the [
?/1
] button to turn the power on.
2.  Press the [FUNCTION] button to select CD function.
3.  Press three buttons of [
l
 
m
 – TUNING], [FUNCTION], 
and [
?/1
] simultaneously.
4.  It enters the CD service mode and displays “SERVICE”.
5.  To release from this mode, press three buttons of [
l
 
m
 
– TUNING], [FUNCTION]  and [
?/1
] simultaneously.
Key Operation:
[TUNING + 
M
 
L
], [
l
 
m
 – TUNING]: 
 
Use these keys to move the SLED. When [TUNING 
M
 
L
] is pressed in this mode, the SLED moves 
to outer circumference and the message “SLED 
OUT” is displayed.
 When 
[
l
 
m
 – TUNING] is pressed in this 
mode, the SLED moves to inner circumference and 
the message “SLED IN” is displayed. 
[FUNCTION]: 
 
Use this key to turn the optical pick-up laser power 
on and off. When the laser power is turned on, the 
message “LD ON” is displayed. When the laser 
power is turned off, the message “LD OFF” is dis-
played. 
CD  ERROR  CODE
The past errors of the optical pick-up system (= optical unit + CD 
board) are displayed as the BD Errors as shown below. 
Procedure:
1.   Press the [
?/1
] button to turn the power on.
2.   Press the [FUNCTION] button to select CD function.
3.  Press three buttons of [
l
 
m
 – TUNING], [DSGX] and 
[
?/1
] simultaneously.
4.  Then, the BD error code is displayed as “D0xxxxxx” (x means 
hexadecimal number) on the liquid crystal display as shown 
below. 
5.  Every pressing of the [TUNING + 
M
 
L
] button in this 
mode increments the number after “D” starting from “D0” up 
to “D4”, and then returns to “D0”. Every pressing of the [
l
 
m
 – TUNING] button in this mode decrements the number 
after “D”. The smaller the error code number is, the newer the 
error content is. 
6.  To release from this mode, press the [
?/1
] button to turn the 
power off.
Contents of “BD Errors”  
Error display example
 
D  0  01 06 01
 
 
1  2  3  4
1  It indicates the error history number
 
0 to 4: The error code number 0 indicates the newest error.
2  It indicates the error content
01: The focus servo cannot lock-in. 
02: GFS is no good (NG).
03: The startup time exceeds the specifi ed period of time (time 
over)
04:  The focus servo is unlocked continuously. 
05:  Q code cannot be obtained within the specifi ed period of 
time.
06: The tracking servo cannot lock-in.
07: Blank disc
 
3  It indicates the on-going processing of optical pick-up system 
(= optical unit + CD board) when the trouble has occurred.
01:   The CD SHIP mode processing is in progress.
02:   The POWER OFF processing is in progress.
03:  The POWER ON processing is in progress.
04:   The INITIALIZE processing is in progress.
05:   The optical pick-up system (= optical unit + CD board) is 
in the stop state. 
06:   The STOP operation is in progress.
07:   The startup processing is in progress.
08:   The TOC read-in processing is in progress.
09:   The SEARCH operation is in progress.
0A:  The PLAY operation is in progress.
0B:  The PAUSE operation is in progress.
0C:  The PLAY – MANUAL SEARCH operation is in prog-
ress.
0D:  The PAUSE – MANUAL SEARCH operation is in prog-
ress.
4  It indicates the operation that is being processed when the trou-
ble has occurred.
 
It indicates the step number of each processing specifi ed by 
3. 
Because the numbers of steps are different in each processing, 
this number is different in each processing.
Ver. 1.2
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