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Yamaha MDX-E300 Service Manual page 12

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MDX-E300
I ADJUSTMENT & TEST MODE
Servicing Procedure
Perform adjustment and setup in the TEST mode. Specific adjustments and procedures vary depend-
ing on the type of servicing performed.
TEMP standard
Type of servicing
PICKUP replacement
Magnetic head replacement
Mechanical unit replacement
(including PICKUP)
MD main PCB replacement
MD microprocessor (IC1401)
replacement
MD LSI (IC1201) replacement
RF IC (IC101) replacement
EEPROM IC (IC1402) replacement
Numbers in the table, e.g., q, w, e, indicate the order in which required items should be performed.
"–" means that item needs not be performed.
(*1): The result of EEPROM entry is displayed at the end of the TEST mode.
OK_EEPROM:
Both "setting value" and "preliminary adjustment completed" have been entered properly.
WR_EEPROM:
The "setting value" has been entered properly but not "preliminary adjustment completed".
Perform preliminary adjustment properly and then enter "preliminary adjustment completed".
NG_EEPROM:
The "setting value" has not been entered.
Check the MD microprocessor and EEPROM for connection.
Preparation before Adjustment
G Test disc
Type
High reflecting disc
TDYS1 (SONY) [for reproduction] (P/No. TX945850)
Low reflecting disc
Commercially available mini disc for recording
Low reflecting disc
MMD-318 [for pre-adjustment] (P/No. AAX04890)
– – – – – – – –
Clear disc for checking the head (P/No. AAX18050)
12
EEPROM setting
AUTO preliminary
setting
value confirmation
adjustment
TEMP
EEPROM SET
AUT YOBI
q
w
q
w
q
w
e
q
q
_
q
w
e
q
w
e
Test disc
Required item
AUTO
AUTO AFB
EEPROM adjustment
adjustment
adjustment
value entry (*1)
AUTO AJST
AUT AFB
TEST mode cancel
e
r
t
e
r
t
r
t
y
w
_
_
w
e
r
r
t
y
r
t
y
G Extension cable (see connection diagram on page 28.)
Type
1. Extension P.C.B. for servicing
2. 2-pin extension connector for servicing
3. 6-pin flat cable for servicing
4. 5-pin flat cable for servicing
5. 28-pin flat cable for servicing
Operation confirmation
(With AUTO main adjustment done in advance)
TEST-PLAY
TEST-REC
y
u
q
y
u
u
i
e
r
t
y
u
i
u
i
Part No.
AAX16660
AAX16620
AAX16640
TX946190
TX946220

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