Sony HCD-GX355 Service Manual page 18

HCD-GX355/GX555/RG270/RG475/RG575
MC TEST MODE
This mode is used to check operations of microprocessor.
Procedure:
1. Press the button to turn the power on.
I/1
2. Press three buttons of
x
simultane-ously.
3. When the MC test mode is activated, VACS level is displayed
on the fluorescent indicator tube momentarily.
4. Turn the [ --- EQ +
l L
"ALL EQ MAX" is displayed on the fluorescent indicator
tube momentarily and turn the [
counter-clockwise, the message "ALL EQ MIN" is
displayed on the fluorescent indicator tube momentarily.
5. Press the [PRESET EQ] button, the message "ALL EQ FLAT"
is displayed on the fluorescent indicator tube momentarily.
6. Turn the [MASTER VOLUME] knob clockwise, the message
"VOLUME MAX" is displayed on the fluorescent indicator
tube momentarily and turn the [MASTER VOLUME] knob
counterclockwise, the message "VOLUME MIN" is displayed
on the fluorescent indicator tube momentarily.
7. Press the [GROOVE] button to changed over VACS on/off.
8. When the [CD SYNC] key is pressed with the test tape (AMS-
100, AMS-110A) in the deck, number of space between tunes
is counted, then if AMS-110A is set, "OK" is displayed on the
fluorescent indicator tube and if AMS-100 is set, "NG" is
displayed on the fluorescent indicator tube.
9. Press the button to release from this mode, then cold reset
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is performed.
VERSION DISPLAY MODE
This mode is used to check the model, destination and software
version.
Procedure:
1. Press the button to turn the power on.
I/1
2. Press three buttons of
x
simultane-ously.
3. When this mode is activated, model and destination is displayed
on the fluorescent indicator tube.
4. Press the [DISPLAY] button to changed over between software
version and year, month, day of the software creation display
mode and model and destination display mode.
5. To release this mode, press three buttons of
NATION] and [DISC 2] simultaneously.
CD ERROR CODE DISPLAY MODE
This mode can be used for error code display of CD section.
Procedure:
1. Press the button to turn the power on.
I/1
2. Press the [CD] key to select "CD".
3. Press three buttons of
x
4. When this mode is activated, mechanism deck error code is
displayed on the fluorescent indicator tube.
5. Press the [GROOVE] button to changed over between optical
pick-up error code display mode and mechanism deck error
code mode.
6. Turn the [ --- EQ + ]
l L
history.
7. To release this mode, press the
off.
18
, [ILLUMINATION] and [DISC 3]
]
knob clockwise, the message
--- EQ + ]
l L
, [ILLUMINATION] and [DISC 2]
, [ILLUMI
x
, [CD] and [DISC 1] simultaneously.
knob to change over display of error
button to turn the power
I/1
1. Mechanism Deck Error Code Mode
When this mode is entered, mechanism deck error code is displayed
with the 10-character format on the fluorescent indicator tube.
The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the mechanism deck error code mode, "M" is displayed on
the fluorescent indicator tube.
The second digit from the left indicates:
(Error history number display)
knob
The second digit from the left indicates which order the error history
is. "1" indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.
Display
0 0 No error
0 8 Table operation time-out (Table does not move to the target
position within the specified time)
1 6 In the chucking down operation, the operation was retried
by the maximum number of times but the operation could
not be completed
1 7 In the chucking up and down operation, the reverse
recovery processing was attempted but it could not be
recovered
1 8 In the chucking up operation, the operation was retried by
the maximum number of times but the operation could not
be completed
2 0 Loading operation time-out (Table does not move to the
target position within the specified time)
2 2 As the chuck was in the ex-open status at the initialization,
the closing was attempted but could not be completed
The 5th and 6th digit from the left indicates:
(Present status display)
The 5th and 6th digit from the left indicates which operating status
when an error occurred is indicated.
Display
0 1 Open completion status
0 2 From open status, the movement to chucking down position
is under way
0 3 From chucking down position, the open operation is under
way
0 4 Chucking down completion status
1 0 The chucking down operation is under way
1 1 The chucking up operation is under way
1 2 Close completion status
1 3 From close status, the ex-open operation is under way
1 4 From ex-open status, the close operation is under way
1 8 Ex-pen completion status
Status
Status