Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
very poolite and healpful secure transaction thanks allot
Text excerpt from page 52 (click to view)
PDU-50WX2
Sustain Pulse Waveform Adjustment
Input Signal White 100%
Adjusting Point
Adjusting Method
X-SUS-B, Y-SUS-B Adjustment Set to the specified value with XSB and YSB of RS-232C command. (Refer to "Timing adjustment of control signal of X and Y Drive Assys".)
VRN Voltage Adjustment
Input Signal
Adjusting Point
Adjusting Method
White 100% VR3701 (VRN) (X DRIVE Assy)
VRN (minus reset voltage adjustment) Adjust so that the voltage between K3707 (VRN) and K3702 (SUS-GND) becomes -300V ± 1.0V.
Panel White Balance Adjustment
Input Signal
Adjusting Point
Adjusting Method
1.Transmit RS-232C command "M 04", and display mask pattern 4. 2.Read adjusted value with "GPW", and adjust it with "PR H" ... "PBL". 3.Transmit "M 00", and mask off.
Reference : Adjustment values using the Media color-difference meter (A-100) MASK Left Side x y 295 306 MASK Right Side 291 300