HCD-MX700NI, HCD-MX750NI - Sony Audio Service Manual (repair manual). Page 18

Read Sony HCD-MX700NI / HCD-MX750NI Service Manual online

HCD-MX700Ni/MX750Ni
18

CD  SERVICE  MODE
This mode can run the CD sled motor freely. Use this mode, for 
instance, when cleaning the optical pick-up.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press the [FUNCTION] button to select “CD”.
3.  Press three buttons of [
x
] and [  + 
v
] simultaneously, the 
message “SERVICE MODE” is displayed on the liquid crystal 
element.
4.  Press the [
l m 
TUNE –] button to move the optical pick-
up to inside track and the message “SLED IN” is displayed 
on the liquid crystal element, or press the [
M L 
TUNE 
+] button to outside track and the message “SLED OUT” is 
displayed on the liquid crystal element.
5.  Press the [
u
] button, “LD ON” or “LD OFF” is displayed  on 
the liquid crystal element. Each time [
u
] button is pressed, 
laser diode on/off is changed over.

Releasing method:
Press the [
?
/
1
] button to turn off the system.

CD  SERVO  TEST  MODE
This mode can check the servo system operations of the optical 
pick-up system (= optical unit + BD96U board).

Note 1: Do not enter the [CD SERVO TEST MODE] while any other test 
mode is in progress.

Note 2: Do not enter any other test mode while the [CD SERVO TEST 
MODE] is in progress.

Note 3: In RAM Read, “SBADrough”, “SBBTrough”, “DT-GI rough”, 
“SBAD  fi ne”,  “SBBT  fi ne”,  “DT-GI  fi ne”, “DSPcomcnt”, and 
“DECcomcnt” are displayed but are not used in the service.

How to Enter the CD Servo Test Mode
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 [
x
], and [
V
   –] simultaneously.
4.  It enters the CD servo test mode and displays “bdt S CURVE”.

How to Exit from the CD Servo Test Mode
Procedure:
1.  To release this mode, press the [
?/1
] button.

Key Operation:
[  + 
v
], [
V
   –]: 
Use these keys to move between the seven 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, the Error 
Rate Mode the LOG Initialize Mode and the LOG Read Mode as 
described below. Also, use these keys to move between the menus 
within the respective seven modes. When [  + 
v
] is pressed, the 
screen advances to the next menu or to the next mode. When [
V
 
 –] 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 [  
+ 
v
] increases the value and pressing [
V
   –] decreases the value. 
[ENTER], [
x
]: 
Use these keys to move between the different layers of the hier-
archy of the CD Servo Test Mode shown below. Press [ENTER] 
to move down to the lower layer, and press [
x
] to move up to the 
higher layer. 
[
M L TUNE +], [l m TUNE –]: 
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. 
Press [
M L TUNE +] to move the cursor to the right, and 
press [
l m TUNE –] to return the cursor to the left.
[
u
]: 
Use this key to execute Command Out in the Command Out Mode. 
CD Servo Test Mode Tree:
  
S Curve Mode 
LD ON
  
(bdt S CURVE) 
(LD ON)
  
RAM Read Mode  
Disc Type  
value indication
  
(bdtRAM READ)   
(DiscType)  
(AL: 0000, RW: 0001)
  
 
Gain Index  
value indication
  
 
(GainIndx) 
(0001)
  
 
RFO GAIN  
value indication
  
 
(RFO_GAIN)  
(0008)
  
 
FEO GAIN  
value indication
  
 
(FEO_GAIN)  
(0005)
  
 
SBAD GAIN  
value indication
  
 
(SBAD_GAIN)  
(0008)
  
 
TEO GAIN  
value indication
  
 
(TEO_GAIN)  
(0008)
  
 
Disc Size  
value indication
  
 
(DiscSize)  
(0000: Non disc, 0001: 8cm, 
  
 
0002: 
12cm)
  
 
Op ABRAKE Error   value indication
  
 
(OpAbrkErr)  
(0000)
  
 
SBBT Data  
value indication
  
 
(SBBT Data)  
(0053)
 
 
TE Peak 
value indication
  
(TE 
P-P) 
(0097)
  
 
FEOOCD  
value indication
  
 
(FEOOCD)  
(00C0)
 
 
The following items are not used (Note 3)
 
RAM Write Mode  
SPG Mask  
value edit
 
(bdtRAM WRITE)  
(00  SPG_Mask)   (Non mask:00, Mask:01)
 
 
Fix RF Gain  
value edit
 
 
(00  FixRFgain)  
(Non Fix:00, AL Fix:01, RW Fix:02)
 
 
TMAX ON  
value edit
 
 
(00  tmaxon)         
 
 
Driver Mute OFF   value edit
 
 
(00  d_muteoff)  
(Normal:00, Forced OFF:01)
 
Command Out Mode  
COMOUT6X  
value edit  
command out
 
(bdt COMOUT)  
(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?)  
 
(FA)
  
 
TEBC?  
 
command out
  
 
(TEBC?)  
 
(02)
  
 
TGADD?  
 
command out
  
 
(TGADD?)  
 
(0D)
  
 
RFGC?  
 
command out
  
 
(RFGC?)  
 
(3F)
  
 
FEOF?  
 
command out
  
 
(FEOF?)  
 
(0000)
  
 
TEOF?  
 
command out
  
 
(TEOF?)  
 
(FFC0)
  
 
TEIOCD1?  
 
command out
  
 
(TEIOCD1?)  
 
(FEC0)
  
 
TEIOCD2?  
 
command out
  
 
(TEIOCD2?)  
 
(FEC0)
  
 
TEIOCD3?  
 
command out
  
 
(TEIOCD3?)  
 
(0080)
  
 
TEOOCD?  
 
command out
  
 
(TEOOCD?)  
 
(FB80)
  
 
FEOOCD?  
 
command out
  
 
(FEOOCD?)  
 
(00C0)
  
 
MONITOR  
value edit  
command out
  
 
(MONITOR)  
(570A00)  
(ok)
  
Error Rate Mode  
 
Error rate indication
  
(bdt ERR RATE)  
 
(0000000000)
 
LOG Read Mode 
 
value indication
 
(bdtLOG READ) 
 
(XX: YYYYYY: ZZZZ)
 
 
 
XX: LOG Number
 
 
 
YYYYYY: Communication LOG
 
 
 
ZZZZ: LOG Number
 
LOG Initialize Mode   
Initializetion 
Initialization execution
 
(bdtLOG INIT) 
 
confirmation 
(INIT done)
  
 
indication 
  
 
(INIT 
sure?)
Higher layer 
Lower layer of menu hierarchy
Display
Click on the first or last page to see other HCD-MX700NI / HCD-MX750NI service manuals if exist.
Random: