Sony HCD-EC68W / MHC-EC68W Service Manual ▷ View online
HCD-EC68W
13
flexible flat cable (16 core)
(CD board: CN301, optical pick-up)
OP base assy
(KSM-213D)
(KSM-213D)
CD board
Remove the four solders.
3-10. OP BASE ASSY (KSM-213D)
four screws
CD mechanism block
cover
two belts (DLM3A)
belt
belt
position of belt (top view)
3-11. BELT (DLM3A)
HCD-EC68W
14
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. In the standby status, press the [
memory to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. In the standby status, press the [
?/1
] button to turn the power
on.
2. Press three buttons of [
x
], [FUNCTION] and [
?/1
] simultane-
ously.
3. When “RESET” appears, the set enters standby status.
PANEL TEST MODE
Enter The Panel Test Mode
Procedure:
1. In the standby status, press the [
Procedure:
1. In the standby status, press the [
?/1
] button to turn the power
on.
2. Press three buttons of [DISPLAY], [
x
] and [FUNCTION] si-
multaneously.
3. When the panel test mode is activated, LEDs and segments of
the liquid crystal display are all turned on.
Version Check
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid
crystal display are turned on), press the [FUNCTION] button.
2. On the liquid crystal display, date and version are displayed
“xxxxxxxx”.
3. From this status, press the [
X
] button, and the destination and
model name are displayed.
4. To release from this mode, press three buttons of [DISPLAY],
[
x
] and [FUNCTION] simultaneously.
Key Test Mode
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid
crystal display are turned on), press the [DISPLAY] button.
2. The message “KEY0 0 0”displayed. Whenever any buttons
are pressed and the [VOLUME] dial is turned, the value is
changed.
changed.
3. To release from this mode, press three buttons of [DISPLAY],
[
x
] and [FUNCTION] simultaneously.
CD REPEAT 5 LIMIT CANCEL MODE
Number of repeats for CD playback is 5 times when the repeat
mode is “REPEAT”. This mode enables CD to repeat playback for
limitless times.
Procedure:
1. Press the [
mode is “REPEAT”. This mode enables CD to repeat playback for
limitless times.
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 [DISPLAY], [
3. Press three buttons of [DISPLAY], [
x
] and [l m –
TUNING] simultaneously.
4. It enters the CD repeat 5 limit cancel mode and displays “NO
LIMIT”.
5. To release this mode, press the [
?/1
] button to turn the power off.
CD SHIP MODE
This mode can run the CD sled motor optionally. Use this mode,
for instance, when cleaning the optical pick-up.
Procedure:
1. Press the [
for instance, when cleaning the optical pick-up.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Confi rm there is no disc in all trays.
3. Press the [FUNCTION] button to select CD function.
4. Press two buttons of [CD N] and [
3. Press the [FUNCTION] button to select CD function.
4. Press two buttons of [CD N] and [
?/1
] simultaneously.
5. Set to the CD ship mode (chucking on).
6. After blink “STANDBY”, “LOCK” is displayed, disconnect
6. After blink “STANDBY”, “LOCK” is displayed, disconnect
the AC plug.
CD TRAY LOCK
This mode is for the antitheft of CD disc in shop. (not for trans-
port)
Procedure:
1. Press the [
port)
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Insert a disc.
4. While pressing the [
3. Insert a disc.
4. While pressing the [
x
] button, press the [
Z
] button for more 5
seconds.
5. The message “LOCKED” is displayed and the disc tray is
locked. (Even if exiting from this mode, the disc tray is still
locked)
locked)
6. If press the [
Z
] button to eject the disc, the message “LOCKED”
is displayed and can not eject the disc.
7. To release this lock, while pressing the [
x
] button, press the
[
Z
] button for 5 seconds again.
8. The message “UNLOCKED” is displayed and the disc tray is
unlocked.
CD POWER MANAGE
This mode is for switch the CD power supply on/off. Even if this
state pulls out AC plug, it is held.
Procedure:
1. Press the [
state pulls out AC plug, it is held.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press the [
3. Press the [
?/1
] button again to turn the power off (standby).
4. After pressing the [DISPLAY] button, while pressing the [
x
]
button, press the [
?/1
] button.
5. It turns power on and display “CD POWER”, then display
“ON” or “OFF”.
CHANGE-OVER THE AM TUNING INTERVAL
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [
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, 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 SHIP AND COLD RESET
Procedure:
1. Press the [
1. Press the [
?/1
] button to turn the power on.
2. Confi rm there is no disc in all trays.
3. Press the [FUNCTION] button to select CD function.
4. Press three buttons of [PLAY MODE/TUNING MODE],
3. Press the [FUNCTION] button to select CD function.
4. Press three buttons of [PLAY MODE/TUNING MODE],
[l m – TUNING] and [
?/1
] simultaneously.
5. After blink “STANDBY”, “RESET” is displayed, disconnect
the AC plug.
COMMON TEST MODE
Procedure:
1. Press the [
1. Press the [
?/1
] button to turn the power on.
2. Press three buttons of [PLAY MODE/TUNING MODE],
[TUNING + M L], and [DISPLAY] simultaneously.
3. It enters the common test mode and displays “COMMON”.
4. Each time the [VOLUME] dial is turned, “VOL MIN”, “VOL
4. Each time the [VOLUME] dial is turned, “VOL MIN”, “VOL
16”, and “VOL MAX” are displayed
5. To release from this mode, press three buttons of [PLAY
MODE/TUNING MODE], [TUNING + M L] and
[DISPLAY] simultaneously.
[DISPLAY] simultaneously.
HCD-EC68W
15
CD SERVO TEST MODE
This mode can check the servo system operations of the optical
pick-up system (= optical unit + CD board).
pick-up system (= optical unit + CD board).
Note 1: Do not enter the this mode while any other test mode is in prog-
ress.
Note 2: Do not enter any other test mode while the this mode is in prog-
ress.
How to Enter the CD Servo Test Mode
Procedure:
1. Press the [
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 [CD N], [l m – TUNING] and
3. Press three buttons of [CD N], [l m – TUNING] and
[DISPLAY] simultaneously.
4. It enters the CD servo test mode and displays “BDT S CU”.
How to Exit from the CD Servo Test Mode
Procedure:
1. Press three buttons of [CD N], [l m – TUNING] and
Procedure:
1. Press three buttons of [CD N], [l m – TUNING] and
[DISPLAY] simultaneously.
2. It releases from the CD Servo Test Mode and returns to the
ordinary CD function.
Key Operation:
[ +], [ –]:
[ +], [ –]:
Use these keys to move between the fi ve modes
contained in the CD Servo Test Mode, that are the
S-Curve Mode, the RAM Read Mode, the RAM
Write Mode, the Command Out Mode and the Error
Rate Mode as described below. Also, use these keys
to move between the menus within the respective
fi ve modes. When [
contained in the CD Servo Test Mode, that are the
S-Curve Mode, the RAM Read Mode, the RAM
Write Mode, the Command Out Mode and the Error
Rate Mode as described below. Also, use these keys
to move between the menus within the respective
fi ve modes. When [
+] is pressed, the screen ad-
vances to the next menu or to the next mode. When
[ –] is pressed, the screen returns back to the
previous menu or to the previous mode. Use these
keys also to increase or decrease the numeric value
when changing the numeric value. Pressing [ +]
increases the value and pressing [ –] decreases
the value.
[ –] is pressed, the screen returns back to the
previous menu or to the previous mode. Use these
keys also to increase or decrease the numeric value
when changing the numeric value. Pressing [ +]
increases the value and pressing [ –] decreases
the value.
[DSGX], [EQ]:
Use these keys to move between the different layers
of the hierarchy of the CD Servo Test Mode shown
below. Press [DSGX] to move down to the lower
layer, and press [EQ] to move up to the higher lay-
er.
of the hierarchy of the CD Servo Test Mode shown
below. Press [DSGX] to move down to the lower
layer, and press [EQ] to move up to the higher lay-
er.
[TUNING + M L], [l m – TUNING]:
Use these keys to move the cursor to the right digit
or to the left digit in the six-digit number, when
changing the numeric value.
or to the left digit in the six-digit number, when
changing the numeric value.
Press
[TUNING
+
M L
] to move the cursor
to the right, and press [l m – TUNING] to
return the cursor to the left.
return the cursor to the left.
[FUNCTION]:
Use this key to execute Command Out in the Com-
mand Out Mode.
mand Out Mode.
CD Servo Test Mode Tree:
S Curve Mode
LD ON
(BDT S CU)
(LD ON)
RAM Read Mode
Disc Type
value indication
(BDTRAM R)
(DISCTYPE)
(AL: 0000, RW: 0001)
Gain Index
value indication
(GAININDX)
(0001)
RFO GAIN
value indication
(RFO_GAIN)
(0009)
FEO GAIN
value indication
(FEO_GAIN)
(0005)
SBAD GAIN
value indication
(SBAD_GAI)
(0007)
TEO GAIN
value indication
(TEO_GAIN)
(000A)
Disc Size
value indication
(DISCSIZE)
(0000: Non disc, 0001: 8cm,
0002:
12cm)
Op ABRAKE Error value indication
(OPABRKER)
(0000)
SBBT Data
value indication
(SBBT DAT)
(006C)
FEOOCD
value indication
(FEOOCD)
(0440)
RAM Write Mode
SPG Mask
value edit
(BDTRAM W)
(00 SPG)
(Non mask:00, Mask:01)
Fix RF Gain
value edit
(00 FIX)
(Non Fix:00, AL Fix:01, RW Fix:02)
TMAX ON
value edit
(00 TMA)
Driver Mute OFF value edit
(00 D_M)
(Normal:00, Forced OFF:01)
Command Out Mode
COMOUT6X
value edit
command out
(BDT COMO)
(COMOUT6X)
(000000)
(OK)
READ2X
value edit
command out
(READ2X)
(60)
(50)
REG READ
value edit
command out
(REG_READ)
(00)
(0000)
FEBC?
command out
(FEBC?)
(00)
FGADD?
command out
(FGADD?)
(10)
TEBC?
command out
(TEBC?)
(00)
TGADD?
command out
(TGADD?)
(00)
RFGC?
command out
(RFGC?)
(00)
FEOF?
command out
(FEOF?)
(FFC0)
TEOF?
command out
(TEOF?)
(FFC0)
TEIOCD1?
command out
(TEIOCD1?)
(FE80)
TEIOCD2?
command out
(TEIOCD2?)
(FF40)
TEIOCD3?
command out
(TEIOCD3?)
(FFC0)
TEOOCD?
command out
(TEOOCD?)
(FD00)
FEOOCD?
command out
(FEOOCD?)
(F780)
MONITOR
value edit
command out
(MONITOR)
(570A00)
(OK)
Error Rate Mode
Error rate indication
(BDT ERR)
(00000000)
Higher layer
Lower layer of menu hierarchy
HCD-EC68W
16
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 [
turn the optical pick-up laser power on and off.
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. Press three buttons of [CD N], [TUNING + M L] and
[DISPLAY] simultaneously.
3. Press the [FUNCTION] button to select CD function.
4. It enters the CD service mode and displays “SERVICE”.
5. To release from this mode, press three buttons of [CD N],
4. It enters the CD service mode and displays “SERVICE”.
5. To release from this mode, press three buttons of [CD N],
[TUNING + M L] and [DISPLAY] simultaneously.
Key Operation:
[TUNING + M L], [l m – TUNING]:
[TUNING + M L], [l m – TUNING]:
Use these keys to move the SLED. When [TUN-
ING + M L] is pressed in this mode, the SLED
moves to outer circumference and the message
“SLED OUT” is displayed.
ING + 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.
the message “SLED IN” is displayed.
[DISPLAY]:
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.
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 CD mechanism (CDM) are displayed as the
CDM Errors, and those of the optical pick-up system (= optical
unit + CD board) are displayed as the BD Errors as shown below.
Procedure:
1. Press the [
CDM Errors, and those 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 [TUNING + M L], [
3. Press three buttons of [TUNING + M L], [
x
] and
[DISPLAY] simultaneously.
4. Then, the CDM error code is displayed as “M0xxxxxx” (x
means hexadecimal number) on the liquid crystal display as
shown below.
shown below.
5. Every pressing of the [TUNING + M L] button in this
mode increments the number after “M” starting from “M0” up
to “M9”, and then returns to “M0”. Every pressing of the [l
m
to “M9”, and then returns to “M0”. Every pressing of the [l
m
– TUNING] button in this mode decrements the number
after “M”. The smaller the error code number is, the newer the
error content is.
error content is.
6. When the [PLAY MODE/TUNING MODE] button is pressed
then, the BD error code is displayed as “D0xxxxxx” (x means
hexadecimal number) on the liquid crystal display as shown
below. In the same way as the CDM error code, use of the
[TUNING + M L] and the [l m – TUNING] but-
tons in this mode enables tracing of the error history.
hexadecimal number) on the liquid crystal display as shown
below. In the same way as the CDM error code, use of the
[TUNING + M L] and the [l m – TUNING] but-
tons in this mode enables tracing of the error history.
7. To release from this mode, press the [
?/1
] button to turn the
power off.
Contents of “CDM Errors”
Error display example
Error display example
M 0 FF 11 42
1 2 3 4
1
It indicates the error history number
0 to 9: The error code number 0 indicates the newest error.
2
It indicates whether the CDM error occurs in the normal opera-
tions or during the initialization operation.
FF
FF
: The error has occurred in the normal opera-
tions.
Other than FF : The error has occurred during the initialization
operation.
3
It indicates the processing during which the trouble has oc-
curred.
01: The disc EJECT processing is in progress.
02: The disc INSERTION-WAITING processing is in prog-
01: The disc EJECT processing is in progress.
02: The disc INSERTION-WAITING processing is in prog-
ress.
03: Processing of the disc INSERTION-REQUEST for the up-
per CD tray is in progress.
04: Processing of the disc EJECTION-REQUEST for the up-
per CD tray is in progress.
05: The disc pulling-in operation is in progress.
06: The disc chucking processing is in progress.
07: The disc re-chucking processing is in progress.
08: The disc chucking-release completion operation is in prog-
06: The disc chucking processing is in progress.
07: The disc re-chucking processing is in progress.
08: The disc chucking-release completion operation is in prog-
ress.
4
It indicates the operation during which the trouble has oc-
curred.
00
00
: Waiting for the operation.
10 to 13 : The disc EJECT operation is in progress.
20
20
: The disc pulling-in operation is in progress.
30
: The disc chucking-release operation is in progress.
40 to 43 : The disc EJECT operation due to error is in prog-
ress.
Contents of “BD Errors”
Error display example
Error display example
D 0 02 09 01
1 2 3 4
1
It indicates the error history number
0 to 9: 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
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
05: Q code cannot be obtained within the specifi ed period of
time.
06: The tracking servo cannot lock-in.
07: Blank disc
07: Blank disc
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