WHITE , HELEN C. PQ's psychological quotes , for reflection pauses . See WHITE , J. GUSTAV . cover design ; Time , Inc .; 28 Sep64 ; A74 9902 . R1.0 Schematics. User Manual: Motherboard Compal LA-9902P G400S, G500S UMA - Schematics. Free. Open the PDF directly: ViewYou can manually set up the Positive timing by changing the screen display to “0:00 00”; The second way is to press some buttons – the buttons can be seen This demonstration plate verifies operation of the system and can be used for operational qualification (OQ). It does not verify performance qualification (PQ) Error 9901, 9902. Communications failure. The instrument lost communication with the computer. Ensure that both the instrument and computer are powered on and Package Contents. Package Contents: 1 x PQ9902 3-in-1 Chess Clock Digital Count Timer, 1 x Bilingual User Manual in English and Chinese Pq 9902 Chess Clock Manual. No items have been added yet! Related Collections. Image with caption: undefined. Interior Design Company In Bangalore9 items.