A cant resolve the problem: the paycheck via ESS Inquiry Service (WebDynpro) and via PZ11_PDF is displayed in a wrong Unicode. Using PZ11 transaction is OK.
According to Note 970350 a feature EDPDF does not return SPOOL in Unicode. It returns name of smart form, by default HR_ESS_PAYSLIP_TO_PDF.
Beside a correction package SAPKE60011 is installed on ERP, so it should not influence.
And I changed language attributes of smart form HR_ESS_PAYSLIP_TO_PDF into selected languages (Russian). The result is negative.
What to do?