I am very pleased with the service manual for my RT-909. This was an easy purchase and great procuct, and much cheaper than other venues i had looked at. This web site is now listed in my favorites list. KEEP UP THE GOOD WORK. THANKS. J. BROWN
I found this service manual to be complete in every detail except for troubleshooting charts. It would be helpful if it had a set of troubleshooting charts; however it is a very good manual otherwise and for the price it is very well worth it.
Complete manual included schematics layouts and alignment procedure, clear to read and magnify, extremely pleased with manual and owner manual . com's service
Text excerpt from page 24 (click to view)
PD-117
11. Focus Best Adjustment
Adjust this point only if adjustment was made in item 10.
Test mode SPDL servo = CLOSE FOCUS servo = CLOSE TRKG servo = CLOSE
TEST DISC
MAX
Innermost circumference PLAY (1 TRK)
VR156
MOTHER BOARD ASSY Adjust the RF level to maximum, with the focus error voltage within ±150mV.
Oscilloscope
GND
START
GND
TP1 (CN201)
FE RF VC
Player
DC Mode CH1: 5mV/div CH2: 20mV/div H: 200ns/div Prove (10:1)
6 1 4
MOTHER BOARD ASSY
12. Tracking Servo Loop Gain Adjustment
UNDER Test mode SPDL servo = CLOSE FOCUS servo = CLOSE TRKG servo = CLOSE
TEST DISC