This service manual helped me to repair my PIONEER. Iam very satisfied, that I found it here.
Even the price of manual was not so high that person would not be able to spend a few money.
But that is very worth spent money. Thanks
I was very glad recieving the service manal from You. Additionaly very fast. Extremaly nice servicing. Thanks very mach! Now my GX-220 working better, than it was made. Alexander from Moscow, Russia/
Sweet! I won the item on eBay and couldn't adjust the geometry or even keep a steady picure. This guide has the full schematics (not available anywhere else as far as I could tell), and was a bargain for the wealth of knowledge it contains. I hooked it up to my testing equipment, tweaked a few potentiometers and got it playing videogames in no time. Thanks!
Text excerpt from page 17 (click to view)
5. Trouble Shooting Guide
Audio Part
DISC READ Abnormal PICK-UP unit control Abnormal
Check if the CN706 is OK. Check if the CN706 is OK. N o Check Power Supply Circuit. Yes Check if the ATAPI Cable is normally. Check if the ATAPI Cable is normally. N o Reconnect it. Yes Check if the PN301 PINS(1)(2)(3)(4) is OK. N o Yes Yes
N o Check POWER SUPPLY circuit.
N o Reconnect it.
Check if the PN302 PINS(1)(2)(5)(6) level is OK.
N o
Check if the IC302 PINS(1)(26) is OK. Check if the IC302 PINS(1)(23) is OK. N o Yes Yes
N o
Yes Yes
Check if the IC102 PINS(17)(18) is OK.
N o
Refer to PICK-UP Unit or Replace DECK MECHA DVD.
Refer to IC302(BA5954FN) or Replace DECK MECHA DVD.
Refer to IC102(MT1388). Replace DECK MECHA DVD.
Yes
Refer to IC302(BA5954FN) or Replace DECK MECHA DVD. Check if the PN302 PIN(3) is OK. N o
Check PATTERN Open or Short.
Replace DECK MECHA DVD.
Check if the IC102 PIN165 is OK. Yes Yes Refer to IC102 (MT1388) or Replace DECK MECHA DVD. Check PATTERN Open or Short.
N o
VIDEO OUT Abnormal
Check if the PN401 is normally. Refer to IC102 (MT1388) or replace DECK MECHA DVD. Yes
N o Reconnect it.
Check if the IC410 PINS(39)(40)(43)(44)(47) (48) is OK.
N o
Check if the IC410 PIN(1) to (8) is OK. Yes N o Check DECK MECHA DVD or MPEG PCB.