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PIONEER XV-DV515/NTXJN
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of PIONEER XV-DV515/NTXJN Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 111 (click to view)
1

2

3

4

4 When DC is generated at the output because of a failure in the AMP system, etc.

5 When abnormally high temperature is detected by the thermistor
5 -1 IC81 abnormal temperature detection circuit
VD+5 IC81 NJM7805FA TH111 NCP18WF104J03RB

A

J
R3605 (R3625) (R3615) 27k Q3637 R3606 (R3626) (R3616) 27k + R3638 10k C3632 470/6.3

POWER Assy

D
VD+5

6CH AMP Assy

D

+5V Q3632
E B C

6CH AMP Assy
to XPROTECT

R108 27k

Front L ch (SW, SL) Front R ch (C, SR)

A
XPROTECT R111 1k

R113 220 R112 1k

Q111 2SC4081

Q3638

Q3633

The voltage at Point A becomes the divided voltage of TH111 and R111//R112 (combined resistance of parallel-connected ⢠In Normal mode, both Q3637 and Q3638 are off. (1) When positive (+) DC voltage is generated at the SP terminal When positive (+) DC voltage is generated at the L or R channel, and VB of Q3637 becomes higher than that at the operation point, Q3632 (E, C, B) is turned on, and the level of XPROTECT becomes low. â The microcomputer detects the XPROTECT level and shuts the power to the unit off. (2) When negative (-) DC voltage was generated at the SP terminal Q3638 is turned on, and XPROTECT is activated. resistors R111 and R112.) In Normal mode, the resistance at TH111 is much higher than R111//R112, and Q111 is off. (Note that the resistance at TH111 becomes lower as the temperature increases.) If the solder temperature at IC81 increases abnormally, the temperature at TH111 (thermistor) mounted closest to the land of IC81 increases accordingly, and the resistance at TH111 decreases. When the temperature at TH111 reaches 90-110_C (varying according to conditions,) the voltage at Point (A) becomes high enough to turn Q111 on, and the level of the XPROTECT line becomes low. The microcomputer detects the XPROTECT level and shuts the power to the unit off.

B

C

D

E

F

XV-DV430
1 2 3 4

111

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Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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