Read Sony HCD-EC68W / MHC-EC68W Service Manual online
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
Click on the first or last page to see other HCD-EC68W / MHC-EC68W service manuals if exist.