Yamaha dvr s120

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HOME THEATER SOUND SYSTEM DVX-S 120

DVR'S 120/NX-P120

SERVICE MAN UAL

The DVX-S120 is composed of the DVR-S120 and the NX-P120.
DVX-SlZO [I DVR-SlZO D NX-P120 D D D D |] |] [I |] D |]

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IMPORTANT NOTICE

This manual has been proyidetl for the use of authorized YAMAHA Retailers and their service personnel,
it has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products. are already
known and understood by the users. and have iherefore not been restated,

WARNING: Failure to follow appropriate seryice and satety procedures when seryicing this product may result in personal
injury, destruction or expensiye components. and failure of the product to perform as specified. For these reasons.
we advise all YAMAHA product owners that any seryice required should be performed by an authorized YAMAHA
Retailer or Ihe appointed service representative.

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, cenificalion or
recognition of any applicable technical capabilities, or establish a principleragem relatiotishtp orany fun.

The data provided is believed to be accurate and applicable to the Imms) indicated on the cover. The research, engineering, and service
departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and
specificalmns are subyect to change without notice or obligation to retrofit. Should any discrepancy appear to exisl. please contact the

distributors Servxce Division.

WARNING: static discharges can destroy expensiye components. Discharge any static electricity your body may have
accumulated by grounding yOurself to the ground buss in the unit (heavy gauge black wires connect to this buss).

IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.

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I CONTENTS
T0 SERVICE PERSONNEL .................. 2-4 DVR-S120 SELF DIAGNOSIS FUNCTION (DIAG)/
PREVENTION OF ELECTRO STATIC DISCHARGE ...... 4 DVR-SlZOD a t] a t] a n [t a [t a [t .......... 21-43
LOCALE MANAGEMENT INFORMATION ........ 5 DISPLAY DATA .......................... 44-45
SYSTEM COMPOSITION / a a n i] a t] ........... 5 C DATA ................................ 46-55
FRONT PANELS ........................... 6-7 DVR-S120 ADJUSTMENT/ DVR-SI2OD a ...... 56
REMOTE CONTROL PANELS .................. 7 DVR-S120 BLOCK DIAGRAM .............. 57-59
REAR PANELS ............................ 3-9 DVR-S120 PRINTED CIRCUIT BOARD ....... 60-68
SPECIFICATIONS / [t a a n ................ 10-12 NX-SW120 PRINTED CIRCUIT BOARD ......... 69
NTERNAL VIEW ............................ 13 DVR-S120 SCHEMATIC DIAGRAM .......... 70-79
DVR-S120 DISASSEMBLY PROCEDURES/ NX-SW120 SCHEMATIC DIAGRAM ............ so

ova-$1205 D a t] ........................ 14-18 PARTS LIST ............................. 31-97
NX-SW120 DISASSEMBLY PROCEDURES / REMOTE CONTROL ......................... 9

NX-SWIZODDDD ....................... 19-20

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This Service Manual uses recycled paper.

YAMAHA

YAMAHA CORPORATION
POBOx 1, Hamamaisu, Japan

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DVR-S 120/NX -P120

I TO SERVICE PERSONNEL

. . . AC LEAKAGE
1. Critical Components Information WALL EQUIPMENT TESTER OR
Components having special characteristics are marked A OUTLET UNDER TEST EQU|VALENT
and must be replaced with parts having specifications equal
to those originally installed. ® :3-
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify :
that all exposed conductive surfaces are properly insulated INSULATING
from supply circuits. TABLE
0 Meter impedance should be equivalent to 1500 ohm shunted 0 Leakage current must 0t eXCGEd 0.5mA.

b .1 F.
y 0 5H 0 Be sure to test for leakage with the AC plug in both

polarities.

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or
plastic (where applicable) components may also contain traces of chemicals found by the California Health and
Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR
ANY REASON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes
or expose eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands
before handling food.

About lead-free solder / D D D D D D D D D

The foil side of MAIN PCB. and SUB P.C.B. used for the DVR-SlZOI] [I [I [I III [I [I [I MAINl] n n [I n SUBI] [I III
DVR-SIZO are soldered with lead-free soldering material D D U D D U D E D D U D D U Sn-l-Ag+Cu[| [I +1] +1] [II]
which is an alloy of Sn+Ag+Cu (tin + silver+ copper). D D E D D D D D D D D D D D D D D D D D
Forthe soldering points otherthan the above, lead solder is D D D I] I] I] I] I] [I I] I] I] I] I] I] I] [I I] I] I] I] I] I] I] [I I]
used. D D D D D
Among some types of lead-free solder currently available, it D D D D D D D D D D D D D D D D D D D D D I] I] I] [I I]
is recommended to use one of the following types for the D D D D D D D D D D D D D D D D D D D D D
repair work. I] Sn-lAg-lCuD D +D +[l [I

- Sn + Ag + Cu (tin + silver + copper) I] SrHCUl] [I H] El

' Sn + Cu (tin + copper) [I Sn-l-Zn-lBi [I [I +D D +D D D D D

oSn+Zn+Bi(tin+zinc+bismuth)

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l-DDDDDDDDDDDDDDDDDDDDDDDKD
40°ClZl|IlDDDDDDDDDDDDDDDDDDDD
DDDDDDDDDDDDDDDDD

2-DDDDDDDDDDDDDDDDDDDDDDDDD
DDDDDDDDDDDDDDDDDDDDDDDDD
DDDDDEIEIIZIIZIIIIEIIIIIZIEIEIIIIIIIIIIDIIIEIEIEIEIIJ
DDDDDDDDDDDDDDDDDDDDDDD

Caution:

1. As the melting point temperature of the lead-free solder
is about 30°C to 40°C (50°F to 70°F) higher than that of
the lead solder, be sure to use a soldering iron suitable to
each solder.

2. If lead solder must be used, be sure to remove lead-free
solder from each terminal section of the parts to be re-
placed and from the area around it completely before sol-
dering, or make sure that the lead-free solder and lead
solder melt together fully.

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NX-P120