PZ-50HV2E (serv.man8). Adjustment procedures - Sharp TV Service Manual (repair manual). Page 9

White 100%

REF_DIG mode
in Factory mode

XSUSB ADJ
YSUSB ADJ

X-SUS-B, Y-SUS-B Adjustment
Set to the indicated value with the remote control unit.
(Refer to "Timing adjustment of control signal of X and Y Drive Assys".)

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.

Reference : Adjustment values using the Media color-difference meter (CA-100)

Adjust the parameter in the OFFSET-DIGITAL of factory mode as follows;

PANEL R-HIGH

PANEL B-LOW

In this time, dispay uses the mask (MASK04) of factory mode.

x

295

y

306

291

300

∗

When perform the various adjustment by RS-232C control, execute a "DM0" command (release the limit of pulse number) 
beforehand.
After the adjustment completion, execute a "DM 3" command (Limit of pulse number: 64%, shipping state) by all means.