Adjustment & Test Mode - Yamaha MDX-596 Service Manual

MDX-596
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
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)
TEST MODE
1. How to enter the test mode
1) Press the POWER button while pressing the SET/ENTER button and the PLAY/PAUSE button.
Version of microprocessor is displayed about 1 second.
t s m 1 C * * e * *
"EJECT" on display
2) Load either a disc for reproduction or a disc for recording.
"AUTO AJST" on display
7
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
Version of EEPROM protect data (from 01)
Version of microprocessor ROM (from 01)
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
Extension cable (see connection diagram on page 14.)
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