Yamaha mr 816 scx

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ADVANCED INTEGRATION DSP STUDIO
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MRBIBcsx/MRBIBX

SERVICE MANUAL

. . . . . MR816CSX
SIeInberg and Cubase are the regIsIered Trademarks 0| Stemberg MedIa TechnologIes GmbH.
(Stemberg S J; U Cubase (3 L Steinberg Media Technologies GmbH ri (BIT ISIeInbergJ) @Efifig??a)
l CONTENTS (E 5k)
SPECIFICATIONS (fifiéIfli) .............................................. 4/6
PANEL LAYOUT (IV?)I«I/f7"7 I) ...................................... 8
CIRCUIT BOARD LAYOUT (11v I 1/4 7 '7 I) ................. 9

WIRING (imfifll) .............................................
DISASSEMBLY PROCEDURE (fifififlla) ..

...9
.10

LSI PIN DESCRIPTION (LSI fiflfléfifiifi) .....14
IC BLOCK DIAGRAM (IC 7:: \y 7.) ..... .....21
CIRCUIT BOARDS (9- bgflil) ....................................... 23
FIRMWARE VERSION CHECK

(77-ATJ17/f-9a ymfiég) .................................. 34/35
BACKUP (I? y 77' ~y 7°) .................. ...36/38
INITIAL SETTING (Hfifiaéméit) ......................................... 39
FACTORYSET (777 III-Jay I~) .................................. 40
TEST PROGRAM (5-2 |~7EI 75A) . ...41/53
BOOT SEQUENCE (EBA ~> - 7 > x) .............................. 65/66
PARTS LIST

BLOCK DIAGRAM (71:17 7 5M 775A)
CIRCUIT DIAGRAM HEIRS.)

sv- .YAMAHA

200809-1T7>754Z HAMAMATSU, JAPAN
m 6!; 0309

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MR816CSX/MR816X

INIPORTAN T NOTICE

This manual has been provided tor 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 thereiore not been restated.

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

IMPORTANT 2 Turn the unit OFF during disassembly and parts replacement. Recheck L work before you apply power to the unit.

WARNING: This product contains chemicals known to the State at California to cause cancer, or birth defects or other reproductive harm.
DO NOT PLACE SOLDEFI, ELECTRICAL/ELECTRONIC OFI PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVEFII

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.

IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord

IMPORTANT. The wires in this mains lead are coloured in accordance with the tollowing code:
BLUE : NEUTRAL
BROWN : LIVE
As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identitying the terminals in
your plug proceed as follows:
The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
Making sure that neither core is connected to the earth terminal of the three pin plug.

- This applies only to users in the United Kingdom. (2 wires)

IWARNING

Components having special characteristics are marked & and must be replaced with parts having specification equal to those
originally installed.

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