NEC FP1350 Repair Manual

$7.99

NEC FP1350 - It's a complete service manual, and it's in PDF format. It contains circuit diagrams ( schemas ) etc. It also usually contains parts catalog. After placing order we'll send You download instructions on Your email address. See below for delivery information

The manual is available only in language(s): English

Link to manual will be sent on Your email address after You place order.

This product was added to our catalog on Wednesday 21 November, 2007.

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Glen Meyer - 10/26/2008

Very fast service, manual is well scanned and clear, but the Appendix A containing PC Command table and Control codes are missing

James Thorp - 12/28/2006

Great original Yamaha manual and no problems at all with the ordering process. Will definitely use this website again and would recommend it to anyone else. James Thorp

vedat kaya - 07/18/2008

i got my service manual for philips vr685-02. Thanks a lot for my very clear and net service manual. I will continue shopping from user-manual.com.

Henry Seiden - 02/26/2009

I downloaded this product and looked through it quickly with Adobe Reader v9. It is clean and a good copy. Some scanned pages are not perfectly square, but that is a minor complaint. The document schematics and board diagrams are easy to read, of good contrast. The whole file downloaded quickly. This is a good service! Sony charges about $100 for the printed version of the same manual. It is still available through their print-on-demand pro parts system, but why would you do that?

Othmar Herbst - 01/13/2008

PDF contains : - schematics, but a little un-sharp. - disassembly instructions, accurate drawings - description of test-modes

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Click to see text excerpt from the manual

2-2.HORIZONTAL DEFLECTION CIRCUIT
1) Horizontal oscillation circuit and Horizontal position control circuit
The horizontal oscillation circuit and the horizontal position control circuit are constructed by IC501. The
horizontal oscillation circuit in IC501 is composed of two PLL ( Phase Locked Loop) circuit (PLL1 circuit and
PLL2 circuit).
a. PLL1 circuit
MPU (IC801) measures the horizontal frequency of input signal and set the data to the frequency divider
of PLL circuit ( PLL1 and PLL2 ) in IC501. Then IC501 oscillates and controls horizontal position by PLL1
circuit based on MPU data.
The peripheral circuit of pin 13 is filter circuit and decides response characteristic of horizontal frequency.
The voltage at pin 13 is approximately 1 volt DC. The resistors connected to pin 14 and pin 16 (R503 and
R504 ) decide pull-in range of horizontal frequency. Pin 18 is reference voltage terminal of PLL (PLL1 and
PLL ) circuit and outputs 0.92 volt.
H. Position/Phase
IC501
1/N DividerTo PLL2
1/N Divider
H. syncPhase Comparator
VCOReference Voltage
13141618
Q505
Approx. 1Vdc
0.92Vdc
R504
R50J
R502C509
R503
C506
C507Approx. 1Vdc
Filter Circuit
(Fig. 2.3) PLL1 circuit
b. PLL2 circuit
The PLL2 circuit operates phase locking of fly-back pulse at IC501 pin 27 and duty cycle control of
horizontal drive pulse at IC501 pin 25. The composition of PLL2 circuit is similar to PLL1 circuit. The
peripheral circuit of pin 20 is filter circuit and decides response characteristic of horizontal frequency. The
voltage at pin 20 is approximately 1 volt DC. The resistors connected to pin 17 and pin 19 (R507 and
R508) of horizontal frequency.
IC501 operates phase locking by comparing internal PLL1 circuit output signal with fly-back pulse. The
duty ratio of horizontal drive pulse at IC501 pin 25 is set to approximately 50% by MPU data and this duty
ratio does not depend on horizontal frequency.
8-8