NEC MultiSync V720 Service Manual

Service Manual for NEC MultiSync V720 Monitor (103 pages)

Specifications:

756/756286-multisync_v720.pdf file (28 Sep 2023)
  • Manufacturer: NEC
  • Category of Device: Monitor
  • Document: MultiSync V720, File Type: PDF Service Manual
  • Updated: 28-09-2023
  • Count of Pages: 103
Download MultiSync V720 Manual (103 pages)

Read PDF Document Online:

Data: UPD 28th September 2023

NEC MultiSync V720 Monitor PDF Service Manual (Updated: Thursday 28th of September 2023 10:26:43 PM)

Rating: 4.7 (rated by 26 users)

Compatible devices: Wall Mount PDWXS 46 55 L (WM-46S-L), MultiSync V322 DST, LCD1880SX - MultiSync - 18.1" LCD Monitor, MD302C6, E323, 90GX2 - MultiSync - 19" LCD Monitor, VT48, MultiSync P212.

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Text Version of NEC MultiSync V720 Monitor Manual (Summary of Contents)

(Ocr-Read of NEC MultiSync V720 Document (Main Content), UPD: 28 September 2023)

  • 66, 7. Horizontal amplitude control Circuit Diagram Description of the circuit: 1) The diodes D1 and D2 compose the bipolar modulation circuit, and have the function of controlling the currents of the oils DY(lpp) and Lm(lm) through voltage modulation carried out by utilizing VM. B+ = Vm +Vcs T…

  • 7, NEC MultiSync V720 PIN ASSIGNMENT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 4 PIN NO. Mini D-SUB-15P 1RED 2 GREEN 3BLUE 4 GROUND 5 GROUND 6 RED GROUND 7 GREEN GROUND 8 BLUE GROUND 9NO PIN 10 GROUND 11 GROUND 12 SDA 13 H.SYNC. 14 V.SYNC. 15 SCL …

  • 55, DDC Interface The DDC interface is a slave mode I²C interface with DDC1 function. It is fully compatible with VESA DDC1/2B standard. The functional block diagram is shown in the below. Data Buffer Shift Register Address Compare 1 Address Register 0 1 0 0 0 0 MUX MUX ENACK ADDR R/W VS…

  • 58, Pull low SCLPull low SCLPull low SCL Data ByteData Byte SCL 11000000 AAA SDA In SDA Out INTO Write REG#19H to release Shift register to data buffer DDC2B=1 ADDR=0 R/W=0 START=0 STOP=1 DDC2B=1 ADDR=0 R/W=0 START=0 STOP=0 DDC2B=1 ADDR=0 R/W=0 START=0 STOP=0 DDC2B=1 ADDR=0 R/W=0 START=1 STOP=0 …

  • 53, Frequency Calculation Horizontal frequency and vertical frequencies calculation are done by using one 10-bit up counter. After power is on, the SYNC processor calculates the vertical frequency first (H/V bit = ”0”). A 31.25KHz clock counts the time interval between two VSYNC pulses, …

  • 65, 6. Horizontal drive and power supply output Circuit Diagram Description of the circuit: 1) R1, T1 and Q2 compose the horizontal driving circuit, and the transistor Q1 generates a horizontal output through the driving signal. IB1 = I CPMAX / Q1h feMIN I B2 ¡Ü¡Ü ¡Ü¡Ü ¡Ü…

DOC-a6714b4e:

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