Yamaha O2R96 User manual

02R96
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SERVICE MANUAL
PA 011640
1.29K-6096 Printed in Japan ’02.06
HAMAMATSU, JAPAN
CONTENTS
SPECIFICATIONS ................................................... 4
DIMENSIONS .......................................................... 16
PANEL LAYOUT .................................. 17
CIRCUIT BOARD LAYOUT ............... 30
DISASSEMBLY PROCEDURE ............................ 34
INSTALLING I/O CARDS ....................... 52
LSI PIN DESCRIPTION ................................ 53
IC BLOCK DIAGRAM .................................. 64
CIRCUIT BOARDS ....................................... 71
INSPECTIONS ...................................................134/144
SERVICE CHECK PROGRAM .154/164
TEST PROGRAM .........................174/175
USING BULK DUMP ....................... 176
CHECKING THE BATTERY ................ 177
MIDI DATA FORMAT ............... 178
MIDI IMPLEMENTATION CHART ............................ 193
PARTS LIST
BLOCK DIAGRAM
OVERALL CONNECTOR CIRCUIT DIAGRAM
CIRCUIT DIAGRAM
This document is printed on chlorine free (ECF) paper with soy ink.
DIGITAL MIXING CONSOLE/
PEAK METER BRIDGE/WOODEN SIDE PANELS
/MB02R96/SP02R96

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IMPORTANT NOTICE
This manual has been provided 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 under-
stood by the users, and have therefore not been restated.
WARNING : Failure to follow appropriate service and safety procedures when servicing this product may result in per-
sonal injury, destruction of expensive components and failure of the product to perform as specified. For
these reasons, we advise all Yamaha product owners that all service required should be performed by an
authorized Yamaha Retailer or the appointed service representative.
IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization certifi-
cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship of
any form.
The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and
service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable
and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to
exist, please contact the distributor’s Service Division.
WARNING : Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to
this bus.)
IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power
to the unit.
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 WHAT
SO EVER!
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.
WARNING
Components having special characteristics are marked and must be replaced with parts having specification equal to those
originally installed.
WARNING: THIS APPARATUS MUST BE EARTHED
IMPORTANT
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN
ACCORDANCE WITH THE FOLLOWING CODE:
GREEN-AND-YELLOW : EARTH
BLUE : NEUTRAL
BROWN : LIVE
As the colours of the wires in the mains lead of this apparatus may
not correspond with the coloured markings identifying the terminals in
your plug, proceed as follows:
The wire which is coloured GREEN and YELLOW must be
connected to the terminal in the plug which is marked by the letter E
or by the safety earth symbol or coloured GREEN and YELLOW.
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.
* This applies only to products distributed by YAMAHA KEMBLE
MUSIC (U.K.) LTD.

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LITHIUM BATTERY HANDLING
This product uses a lithium battery for memory back-up.
WARNING : Lithium batteries are dangerous because they can be exploded by improper handling. Observe the following pre-
cautions when handling or replacing lithium batteries.
Leave lithium battery replacement to qualified service personnel.
Always replace with batteries of the same type.
When installing on the PC board by soldering, solder using the connection terminals provided on the battery cells.
Never solder directly to the cells. Perform the soldering as quickly as possible.
Never reverse the battery polarities when installing.
Do not short the batteries.
Do not attempt to recharge these batteries.
Do not disasemble the batteries.
Never heat batteries or throw them into fire.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig handtering. Udskiftning ma kun ske med batteri af samme fabrikat og type. lever det brugte
batteri tilbage til leverandren.
VARNING
Explosionsfara vid felaktigt batteribyte.
Anvand samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren.
Kassera anvant batteri enligt fabrikantens instruktion.
VAROITUS
Paristo voi rajahtaa, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiiin.
Havita kaytetty paristo valmistajan ohjeiden mukaisesti.
The following information complies with Dutch official Gazette 1995. 45; ESSENTIALS OF ORDER ON THE COLLECTION OF BATTERIES.
• Please refer to the diassembly procedure for the removal of Back-up Battery.
• Leest u voor het verwijderen van de backup batterij deze beschrijving.
Take care not to trap your fingers.

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SPECIFICATIONS
02R96
General Spec
Number of scene memories 99
Sampling Frequency
Internal 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
External Normal rate: 44.1 kHz–10% to 48 kHz+6%
Double rate: 88.2 kHz–10% to 96 kHz+6%
Signal Delay Less than 2.0 ms CH INPUT to STEREO OUT (fs=48 kHz)
Less than 1.1 ms CH INPUT to STEREO OUT (fs=96 kHz)
Fader 100 mm motorized with touch sense ×25
Fader Resolution +10 to –96, –∞dB (256 steps/100 mm) input faders
0 to –130, – ∞dB (256 steps/100 mm) master faders, stereo fader
Total Harmonic Distortion
*1
(CH INPUT to STEREO OUT)
(Input Gain=Min.)
fs=48 kHz Less than 0.05% 20 Hz to 20 kHz @ +14 dB into 600Ω
Less than 0.01% 1 kHz @ +18 dB into 600 Ω (fs=48 kHz)
fs=96 kHz Less than 0.05% 20 Hz to 40 kHz @ +14 dB into 600 Ω
Less than 0.01% 1 kHz @ +18 dB into 600 Ω
Frequency Response
(CH INPUT to STEREO OUT) 20 Hz–20 kHz, 0.5, –1.5 dB @ +4 dB into 600 Ω(fs=48 kHz)
20 Hz–40 kHz, 0.5, –1.5 dB @ +4 dB into 600 Ω(fs=96 kHz)
Dynamic Range
(maximum level to noise level)
110 dB typ. DA Converter (STEREO OUT)
105 dB typ. AD+DA (to STEREO OUT) @ fs=48 kHz
105 dB typ. AD+DA (to STEREO OUT) @ fs=96 kHz
Hum & Noise
*2
(20 Hz–20 kHz)
Rs=150Ω
Input Gain=Max.
Input Pad =0 dB
–128 dB Equivalent Input Noise
–92 dB residual output noise. STEREO OUT (STEREO OUT off)
–92 dB (96 dB S/N) STEREO OUT (STEREO fader at nominal level and
all CH INPUT faders at minimum level)
–64 dB (68 dB S/N) STEREO OUTPUT (STEREO fader at nominal leve l
and one CH INPUT fader at nominal level)
Maximum Voltage Gain
74 dB CH INPUT (CH1–24) to STEREO OUT/OMNI (BUS) OUT
74 dB CH INPUT (CH1–24) to OMNI (AUX) OUT (via pre input fader)
74 dB CH INPUT (CH1–24) to CONTROL ROOM MONITOR OUT (via
STEREO bus)
Crosstalk
(@ 1 kHz)
Input Gain=Min.
–80 dB adjacent input channels (CH1–24)
–80 dB input to output
AD Input (1–16: A/B)
Phantom switch +48 V DC is supplied to A (XLR-3-31 type) input
Pad switch 0/26 dB attenuation
Gain control 44 dB (–60 to –16), detented
Peak indicator LED (red) turns on when post HA level reaches 3 dB below clipping
Signal indicator LED (green) turns on when post HA level reaches 20 dB below nomi-
nal
Insert I/O (pre AD converter)
Insert switch on/off
AD converter 24-bit linear, 128-times oversampling (fs=48 kHz)
AD Input (17–24)
Gain control 44 dB (–34 to +10), detented
Peak indicator LED (red) turns on when post HA level reaches 3 dB below clipping
Signal indicator LED (green) turns on when post HA level reaches 20 dB below nomi-
nal
AD converter 24-bit linear, 128-times oversampling (fs=48 kHz)
Analog Input
(2TR IN ANALOG 1, 2) AD converter 24-bit linear, 128-times oversampling (fs=48 kHz)

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Option Input (SLOT 1–4) Available cards Optional digital interface cards (MY8, MY4 series)
Digital Input
(2TR IN DIGITAL 1–3) SRC On/off (1:3 and 3:1 maximum input to output sample rate ratio)
Input Channel CH1–56
Input patch —
Phase Normal/reverse
Gate-type
*3
On/off
Key in: 12 ch Group (1–12, 13–24, 25–36, 37–48, 49–56)/AUX1–8
Comp-type
*4
On/off
Key in: self /Stereo Link
Pre EQ/pre fader/post fader
Attenuator –96.0 to +12.0 dB (0.1 dB step)
EQ 4-band PEQ
*5
On/off
Delay 0–43400 samples
On/off —
Fader 100 mm motorized (INPUT/AUX1–8)
Aux send On/off
AUX1–8; pre fader/post fader
Solo On/off
Pre fader/after pan
Pan 127 positions (Left= 1–63, Center, Right= 1–63)
Surround pan 127 ×127 positions
LFE level –∞, –96 dB to +10 dB (256 step)
Routing STEREO, BUS1–8, DIRECT OUT
Direct out Pre EQ/pre fader/post fader
Metering Displayed on LCD
Peak hold on/off
TALKBACK
Level control Analog rotary potentiometer
AD converter 24-bit linear, 128-times oversampling
Talkback select Built-in microphone/AD IN 1–16
On/off —
OSCILLATOR
Level 0 to –96 dB (1 dB step)
On/off —
Waveform Sine 100 Hz, sine 1 kHz, sine 10 kHz, pink noise, burst noise
Routing BUS1–8, AUX1–8, STEREO L, R
STEREO OUT DA converter 24-bit linear, 128-times oversampling
OMNI OUT 1–8 Output patch SURROUND MONITOR, STEREO, BUS1–8, AUX1–8, DIRECT OUT
1–56, INSERT OUT (CH1–56, BUS1–8, AUX1–8, STEREO)
DA converter 24-bit linear, 128-times oversampling
CONTROL ROOM MONITOR
OUT
Monitor select
STEREO, 2TR IN DIGITAL 1, 2TR IN DIGITAL 2, 2TR IN DIGITAL 3, 2TR
IN ANALOG 1, 2TR IN ANALOG 2, ASSIGN 1, 2 (BUS 1–8/AUX 1–8)
Mono On/off
Dimmer On/off
DA converter 24-bit linear, 128-times oversampling
Level control Analog rotary potentiometer
Phones level Analog rotary potentiometer
STUDIO MONITOR OUT
Monitor select CONTROL ROOM, STEREO, AUX 7, AUX 8, TALKBACK
DA converter 24-bit linear, 128-times oversampling
Level control Analog rotary potentiometer

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2TR OUT DIGITAL 1–3 Dither On/off
Word length 16, 20, 24-bit
Output patch STEREO, BUS1–8, AUX 1–8, DIRECT OUT 1–56, INSERT OUT,
CONTROL ROOM
Option Output (SLOT 1–4)
Available card Optional digital interface card (MY8, MY4 series)
Output patch SURROUND MONITOR, STEREO, BUS1–8, AUX1–8, DIRECT OUT
1–56, INSERT OUT (CH1–56, BUS1–8, AUX1–8, STEREO)
Dither On/off
Word length 16/20/24-bit
STEREO
Comp-type
*4
On/off
Pre EQ/pre fader/post fader
Attenuator –96.0 to +12.0 dB (0.1 dB step)
EQ 4-band PEQ
*5
On/off
On/off —
Fader 100 mm motorized
Balance 127 positions (Left=1–63, Center, Right=1–63)
Delay 0–43400 samples
Metering Displayed on LCD
Peak hold on/off
BUS1–8
Comp-type
*4
On/off
Pre EQ/pre fader/post fader
Attenuator –96.0 to +12.0 dB (0.1 dB step)
EQ 4-band PEQ
*5
On/off
On/off —
Fader 100 mm motorized
Delay 0–43400 samples
Bus to stereo Level (–∞, –130 dB to 0 dB)
On/off
Pan: 127 positions (Left=1–63, Center, Right=1–63)
Metering Displayed on LCD
Peak hold on/off
AUX1–8
Comp-type
*4
On/off
Pre EQ/pre fader/post fader
Attenuator –96.0 to +12.0 dB (0.1 dB step)
EQ 4-band PEQ
*5
On/off
On/off —
Fader 100 mm motorized
Delay 0–43400 samples
Metering Displayed on LCD
Peak hold on/off

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SURROUND MONITOR
Mute On/off
Solo On/off
Source BUS1–8, SLOT 1–4
Monitor to C-R On/off
Oscillator Pink noise/500–2 kHz/1 kHz/50 Hz
Monitor matrix 5.1 → 5.1, 5.1→ 3-1, 5.1 → ST, 3.1 → 3.1, 3.1→ ST
Bass
management 5 presets
Monitor
alignment ATT (–12.0 dB to 12 dB 0.1 dB step), Delay (0–30.0 msec 0.02 msec
step)
INTERNAL EFFECTS
(EFFECT 1–4)
Bypass On/off
In/out 8-in, 8-out (EFFECT1): depends on effects type
2-in, 2-out (EFFECT2–4): depends on effects type
Effect-in from AUX1–8/INSERT OUT/effect-out
Effect-out to Input patch/effect-in
Power Requirements U.S.A./Canada 120 V, 60 Hz 200 W
Japan 100 V, 50/60 Hz 190 W
Other 220–240 V, 50/60 Hz 200 W
Dimensions (H x D x W) 239 x 697 x 667 mm (9.4" x 27.4" x 26.3")
Net weight 34 kg (75 lbs)
Operating free-air temperature range 10–35°C (50–95°F)
Storage temperature range –20 to 60°C (–4 to 140°F)
Supplied Accessories AC Cable
CD-ROM (Studio Manager)
Options Digital interface card (MY8, MY4 series)
PEAK METER BRIDGE: MB02R96
SIDE PANEL: SP02R96
*1. Total harmonic distortion is measured with a 6 dB/octave filter @ 80 kHz.
*2. Hum & Noise are measured with a 6 dB/octave filter @ 12.7 kHz; equivalent to a 20 kHz filter with infinite dB/octave
attenuation.
*3. See“Gate Parameters” on page 8.
*4. See“Comp Parameters” on page 8.
*5. See“EQ Parameters” on page 7.
LOW/HPF L-MID H-MID HIGH /LPF
Q
0.1–10.0
(41 points)
low shelving
HPF
0.1–10.0
(41 points)
0.1–10.0
(41 points)
high shelving
LPF
F21.2 Hz–20 kHz (1/12 oct step)
G±18 dB
(0.1 dB step)
HPF: on/off
±18 dB
(0.1 dB step)
±18 dB
(0.1 dB step)
LPF: on/off
EQ Parameters

02R96
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Gate
Threshold –54 dB to 0 dB (0.1 dB step)
Range –70 dB to 0 dB (1 dB step)
Attack 0 ms–120 ms (1 ms step)
Hold
0.02 ms–1.96 s (216 points) @ 48 kHz
0.02 ms–2.13 s (216 points) @ 44.1 kHz
0.01 ms–981 ms (216 points) @ 96 kHz
0.01 ms–1.06 s (216 points) @ 88.2 kHz
Decay
5 ms–42.3 s (160 points) @ 48 kHz
6 ms–46.0 s (160 points) @ 44.1 kHz
3 ms–21.1 s (160 points) @ 96 kHz
3 ms–23.0 s (160 points) @ 88.2 kHz
Ducking
Threshold –54 dB to 0 dB (0.1 dB step)
Range –70 dB to 0 dB (1 dB step)
Attack 0 ms–120 ms (1 ms step)
Hold
0.02 ms–1.96 s (216 points) @ 48 kHz
0.02 ms–2.13 s (216 points) @ 44.1 kHz
0.01 ms–981 ms (216 points) @ 96 kHz
0.01 ms–1.06 s (216 points) @ 88.2 kHz
Decay
5 ms–42.3 s (160 points) @ 48 kHz
6 ms–46.0 s (160 points) @ 44.1 kHz
3 ms–21.1 s (160 points) @ 96 kHz
3 ms–23.0 s (160 points) @ 88.2 kHz
Compressor
Threshold –54 dB to 0 dB (0.1 dB step)
Ratio (x :1) x=1, 1.1, 1.3, 1.5, 1.7, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 20, ∞(16 points)
Out gain 0 dB to +18 dB (0.1 dB step)
Knee Hard, 1, 2, 3, 4, 5 (6 step)
Attack 0 ms–120 ms (1 ms step)
Release
5 ms–42.3 s (160 points) @ 48 kHz
6 ms–46.0 s (160 points) @ 44.1 kHz
3 ms–21.1 s (160 points) @ 96 kHz
3 ms–23.0 s (160 points) @ 88.2 kHz
Expander
Threshold –54 dB to 0 dB (0.1 dB step)
Ratio (x :1) x=1, 1.1, 1.3, 1.5, 1.7, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 20, ∞(16 points)
Out gain 0 dB to +18 dB (0.1 dB step)
Knee Hard, 1, 2, 3, 4, 5 (6 points)
Attack 0 ms–120 ms (1 ms step)
Release
5 ms–42.3 s (160 points) @ 48 kHz
6 ms–46.0 s (160 points) @ 44.1 kHz
3 ms–21.1 s (160 points) @ 96 kHz
3 ms–23.0 s (160 points) @ 88.2 kHz
Gate Parameters
Comp Parameters

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Compander H
Threshold –54 dB to 0 dB (0.1 dB step)
Ratio (x :1) x=1, 1.1, 1.3, 1.5, 1.7, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 20 (15 points)
Out gain –18 dB to 0 dB (0.1 dB step)
Width 1 dB–90 dB (1 dB step)
Attack 0 ms–120 ms (1 ms step)
Release
5 ms–42.3 s (160 points) @ 48 kHz
6 ms–46.0 s (160 points) @ 44.1 kHz
3 ms–21.1 s (160 points) @ 96 kHz
3 ms–23.0 s (160 points) @ 88.2 kHz
Compander S
Threshold –54 dB to 0 dB (0.1 dB step)
Ratio (x :1) x=1, 1.1, 1.3, 1.5, 1.7, 2, 2.5, 3, 3.5, 4, 5, 6, 8, 10, 20 (15 points)
Out gain –18 dB to 0 dB (0.1 dB step)
Width 1 dB–90 dB (1 dB step)
Attack 0 ms–120 ms (1 ms step)
Release
5 ms–42.3 s (160 points) @ 48 kHz
6 ms–46.0 s (160 points) @ 44.1 kHz
3 ms–21.1 s (160 points) @ 96 kHz
3 ms–23.0 s (160 points) @ 88.2 kHz
INPUT 1–16
+48 V switch ON/OFF
PAD switch 0/26 dB
GAIN control –16 to –60 dB
INSERT switch ON/OFF
INPUT 17–24 GAIN control +10 to –34 dB
TALKBACK TALKBACK LEVEL control
STUDIO MONITOR OUT STUDIO LEVEL control
CONTROL ROOM MONITOR OUT CONTROL ROOM LEVEL control
PHONES PHONES LEVEL control
FADER MODE Section
AUX SELECT DISPLAY button
AUX 1, AUX 2, AUX 3, AUX 4, AUX 5, AUX 6, AUX 7, AUX 8
buttons (w/LED)
FADER MODE FADER, AUX button (w/LED)
ENCODER MODE DISPLAY button
PAN, AUX, ASSIGN 1, ASSIGN 2 buttons (w/LED)
DISPLAY CONTROL Section
DISPLAY ACCESS
buttons AUTOMIX, DIO, SETUP, UTILITY, MIDI, REMOTE, METER,
VIEW, PAIR, GROUP, INPUT PATCH, OUTPUT PATCH
EFFECTS/PLUG-INS DISPLAY access, ,
INTERNAL EFFECTS, PLUG-INS, CHANNEL INSERTS, 1, 2, 3, 4
Parameter control: 1, 2, 3, 4
Others , F1, F2, F3, F4,
buttons
LCD contrast control
Controls
Analog Section
Digital Section

02R96
10
SELECTED CHANNEL Section
ROUTING DISPLAY button
1, 2, 3, 4, 5, 6, 7, 8, STEREO, DIRECT, FOLLOW PAN buttons
(w/LED)
DISPLAY ACCESS PHASE/INSERT, DELAY buttons
DYNAMICS DISPLAY, GATE /COMP buttons
GATE ON, COMP ON buttons (w/LED)
Parameter control x 5
PAN/SURROUND
DISPLAY button
L, R, LINK, GRAB, EFFECT buttons (w/LED)
Pan control
Joystick (Sound image position control)
EQUALIZER
DISPLAY button
EQ ON button (w/LED)
GAIN controls: LOW, LOW-MID, HIGH-MID, HIGH
FREQUENCY/Q controls: LOW, LOW-MID, HIGH-MID, HIGH
controls (w/SW)
MONITOR Section
MONITOR DISPLAY button
STUDIO CONTROL ROOM, STEREO, AUX 7, AUX 8 buttons (w/LED)
SOLO CLEAR button
CONTROL ROOM
2TR D1, 2TR D2, 2TR D3, 2TR A1, 2TR A2, STEREO, ASSIGN
1, ASSIGN 2 buttons (w/LED)
SURROUND BUS, SLOT buttons (w/LED)
SURROUND MONITOR LEVEL control
Others TALKBACK, DIMMER buttons (w/LED)
CONTROL ROOM LEVEL control
SCENE MEMORY and USER
DEFINED KEYS section
SCENE MEMORY DISPLAY button
,
, STORE, RECALL buttons
USER DEFINED KEYS DISPLAY button
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 buttons
(w/LED)
MACHINE CONTROL Section LOCATOR DISPLAY button
LOCATE MEMORY: 1, 2, 3, 4, 5, 6, 7, 8, SET buttons (w/LED)
TRANSPORT
CONTROL REW, FF, STOP, PLAY, REC, SHUTTLE, SCRUB (w/LED)
CHANNEL STRIP Section
Encoders x 24 (1–24)
Buttons AUTO x 24 (1–24), SEL x 24 (1–24), SOLO x 24 (1–24), ON x
24 (1–24)
Faders (w/ touch
sense) x 24 (1–24)
MASTER Section
LAYER 1–24, 25–48, MASTER, REMOTE buttons (w/LED)
STEREO AUTO, SEL, ON buttons (w/LED)
Fader (w/touch sense) x 1
DATA ENTRY Section Buttons INC, DEC,
, , , , ENTER buttons
Encoder Parameter wheel