Nad M 56 Service Manual

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© NAD 2010

99" 'IVflNVIN EOIAHES

NAD ELECTRONICS INTERNATIONAL
TORONTO

HEAV'Id mosm Red-ma

SERVICE MANUAL

BIu-ray DiscT'V| PLAYER

M56

Blu-ray DiscTM PLAYER

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CONTENTS

SECTION 1 ........ SUMMARY

SECTION 2 ........ CABINET & MAIN CHASSIS
SECTION 3 ........ ELECTRICAL

SECTION 4 ........ HL-05P LOADER PART
SECTION 5 ........ REPLACEMENT PARTS LIST

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3. DECK MECHANISM SECTION (HL-05P)

-I SVC purchase order caution I-

Service Part Only: A60
Pan # 36-57700-00

NO OTHER OPTIONAL PARTS
' AVAILABLE: PARTS SHOWN
FOR REFERENCE ONLY

Page 19

TRAINING MASTER FOR BLU-RAY (BD)

1-4. Shaky Picture

Distorted picture refers to the customer getting video, but there is a problem with the video.

Determine what cables the customer is using to connect the BD to

What cables is the customer NO . the TV and it connected properly. Refer to OM for connections.
using to connect the BD? Tighten any loose cables. Make sure the customer is not connecting a
BD to VCR or BD to DVD Recorder. Copy protection can distort
the picture on older VCR models.
YES
Is the TV set to NO Make sure the TV is on the correct input. Turn TV off. then on
. to determine input. Video when using composite. or component.
the correct input? . .
DVl when usmg DVI, and HDMI when usmg HDMI.
YES
One disc displaying the issue is a problem with the disc.
Does shaking appear when NO Multiple discs displaying the problem could indicate the BD lens
watching multiple discs? needs to be cleaned. Recommend the customer use a lens cleaner
on the BD. A lens cleaner is available at any local electronics retailer.
YES
Shaking appearing when watching a TV program indicates
Does shaking appear when NO n issue with the display. If the TV program is fine, then connect
watching a TV program? the BD to another input on the display to determine if the problem
is following the BD.
YES
Connect the BD to another TV and play a disc. No shaking during
Does shaking appear NO disc play back indicates a problem with the first TV. Please refer to
when the BD is connected to the owners manual for instructions on how to connect the BD to a TV.
another TV? If the BD has a problem on the second TV,
then see sen/ice chart for service information.
YES
Have the customer try another set of cables. A bad cable can
Has the customer tried NO also cause video problems. Test the cable with another device to

another set of cables?

the TV to also determine if the TV is bad. If ED is problem,
please see service chart for service information.

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TRAINING MASTER FOR BLU-RAY (BD)

2-3. Snowy Screen

A snowy picture is when black and white dots are all over the screen.

Make sure the customer did not select 480i resolution in the menu

Does the BD on-screen N0 of the BD player if using HDMI connections. Change resolution on
menu appear? upconversion BD player by pushing the resolution button of the remote con-
troller. HDMI dont support 480i resolution.
YES
Determine what cables the customer is using to connect the BD
What cables is the customer NO to the TV and it connected properly. Refer to Ovaor connections.
using to connect the BD? Tighten any loose cables. Make sure the customer is not connecting a
BD to VCR or BD to DVD Recorder. Copy protection can distort
the picture on older VCR models.
YES
Is the TV set to NO Make sure the TV is on the correct input. Turn TV off,
. then on to determine input. Video when using compOSIte, or component.
the correct input? . .
DVl when using DVI, and HDMI when using HDMI.
YES
If the customer is not able to watch television then he may
Is the customer able to NO have a problem with his television, especially if the cable signal comes
watch TV programming? through on a different input. If the customer can not get a TV program,
then he still may have a problem with the particular input on his TV.
YES
Have the customer connect the BD to another TV in order to
Can the customer connect NO determine if the problem is the BD or the TV. Refer to the OM for
the BD to another TV? connections assistance. If the BD works on the second TV,
then the customer has a problem with his TV.
YES
Have the customer try another set of cables. A bad cable can
Has the customer tried NO also cause video problems. Test the cable with another device to

another set of cables?

the TV to also determine if the TV is bad. If ED is problem,
please see service chart for service information.

Page 39

TRAINING MASTER FOR BLU-RAY (BD)

5-11. My Unit Wont Upconvert

The customer has a problem with getting the unit to change resolutions to 480p, 720p, 1080i, or 1080p.

Is the disc NO Ask the customer to press stop to stop the disc from playing.
currentl la in ,7 Ask the customer to press the resolution button to change the resolution.
y p y g. The BD player will not change resolutions while the disc is playing.
YES
Is the customer usin Discs with copy protection will not upconvert above 480p
com onent (red blue; NO when using component cables. The component output does not have HDCP
and) reen) cables? (highbandwidth digital content protection) compliancy
g ' which causes the BD player to switch from 720p or 1080i to 480p.
YES
RGB to DVI or RG8 to HDMI adapters will not upconvert.
Is the customer usin NO RGB outputs and inputs are not HDCP compliant. If the customer
an sort of ada ter cabge'? sees an error message about HDCP, this is the issue.
y p ' Copy protected discs will not upconvert
when HDCP is not found on the input or output.
YES
Regular discs can convert to 1080p over the HDMI output and
Is the customer using NO only the HDMI output. The TV has to have HDCP compliancy on
an HDMI or DVI cable? the HDMI input. The display has to accept the resolution
(480p, 720p, 1080i, or 1080p).
YES
Is the customer usin an NO Some movie companies will not allow their discs to upconvert
HDMI to DVI cable}? past 480p. If only one disc poses a problem, then the issue is the disc.
' The customer will need to try multiple discs.
YES
One disc not upconverting means the disc may not upconvert.
Has the customer tried N0 Some movie companies will not allow their discs to upconvert.

multiple discs?

If multiple discs display the issue, remove the disc and change
the resolution with no disc in the unit.
If resolution will not change, the unit needs service.

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Page 92

1-3. Pin Function

PIN NO PIN NAME TYPE DESCRIPTION
RF Sig als & S/H Control Pulses (21)
5 TRINA Analog Input Input of Tracking Signal (A)
6 TRINB Analog Input Input of Tracking Signal (B)
7 TRINC Analog Input Input of Tracking Signal (C)
8 TRIND Analog Input Input of Tracking Signal (D)
9 INA Analog Input Input of Main Beam Signal (A)
10 INB Analog Input Input of Main Beam Signal (B)
11 INC Analog Input Input of Main Beam Signal (C)
12 IND Analog Input Input of Main Beam Signal (D)
14 INE Analog Input Input of Sub-Beam Signal (E)
15 INF Analog Input Input of Sub-Beam Signal (F)
16 ING Analog Input Input of Sub-Beam Signal (G)
17 INH Analog Input Input of Sub-Beam Signal (H)
Input of Focusing Signal (Positive)
19 FOIP/RRFSUM Analog Input Alternative Function : Read RF sum
20 FOIN Analog Input Input of Focusing Signal (Negative)
24 RFIN Analog Input Differential Input of AC Coupling RF SUM Signal (Negative)
25 RFIP Analog Input Differential Input of AC Coupling RF SUM Signal (Positive)
26 RFIP2 Analog Input Differential Input of AC Coupling RF SUM Signal (Positive)
27 RFIN2 Analog Input Differential Input of AC Coupling RF SUM Signal (Negative)
47 GAINSW Analog Output Read gain switch. 1
48 GAINSW2 Analog Output Read gain switch 2.
49 GAINSW3 Analog Output Read gain switch 3.

EQBIAS

Analog Output

EQRF Circuits (1)
External Bias Connection for Circuits in EQRF Block 8. SATA Block.
The external resistor need meet the precision for SATA requirement. (23,1K, 1%)
0 Power Control for Laser) (6)

22 FPDODVD Analog Input Laser Power Monitor Input for DVD APC / Differential positive input
23 FPDOCD Analog Input Laser Power Monitor Input for CD APC / Differential negative input
121 VRDCO Analog Output Output Voltage of Laser Diode Control in Read APC
122 VRDC1O Analog Output Output Voltage 1 of Laser Diode Control in Read APC
123 VRDC2O Analog Output Output Voltage 2 of Laser Diode Control in Read APC
124 VRDCSO Analog Output Output Voltage 3 of Laser Diode Control in Read APC
Refe ence Voltages & DACs (5)
1 V14 Analog Output Output of Voltage Reference (1.4V)
2 VFVREF Analog Output Output of Voltage Reference
3 HAVC Analog Output Decoupling Pin for Reference Voltage of Main and Sub Beams
28 REG7CAP Analog Output Output of Voltage Reference
125 VDACO Analog Output Output of General DAC
MPXOU (Multiplexer Circ it for Various Signals) and Testing Interface (4)
Multiplexer Output 3 for Signal Monitoring.
117 MPXOUT3/MON/GO Analog Output Alternate function : Internal monitored signal output / General output.
Multiplexer Output 2 for Signal Monitoring.
118 MPXOUTZ/MON/GO Analog Output Alternate function : Internal monitored signal output / General output.
Multi Iexer Out ut 1 for Si nal Monitorin .
119 MPXOUTflMON/GO Analog Output Alterrfiate functign : Interna?monitored signal output / General output
126 AUX1 Analog I/O Auxiliary Input.AIternative Function : Signal Monitoring
' F Power Supplies (11)
4 AGNDJ Analog Ground Ground Pin
13 AVDD3372 Analog Power(3.3V) Power Pin
18 AGND72 Analog Ground Ground Pin
21 AVDD1272 Analog Power(1.2V) Power Pin
29 AGND73 Analog Ground Ground Pin
30 AVDD3373 Analog Power(3.3V) Power Pin

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