Marantz DV4100 User Manual download pdf (Page 65)

Test instructions mono board DVD-ASD1

GB 9ASD-1 5.

5. Test instructions mono board DVD-ASD1

5.1 General

• Impedance of measuring-equipment should be > 1M

Ω

• Most tests have to be done by software commands.

Together with the software command you will find a Ref.#

nbr. This is the number of the diagnostic nulceus used for

this test. More detailed information can be find in the

chapter “Diagnostic Nuclei”.

• Levels: Most measurements are digital measurements.

The high and low levels in this document got to have next

specification:

low : < 0.3V

high : > 3.0V

LOW : < 0.4V

HIGH : > 4.5V

• All voltages marked with “stby” have to stay on during

standby.

5.2 General start-up measurements

5.2.1 Supply check:

Pin nbr. Supply

1600-1 3V3

1600-2 3V3

1600-3 +5V0V during STAND BY

1600-4 +5Vstby

1600-5 +6V

1600-6 0V

1600-7 0V

1600-8 0V

1600-9 -8V

1600-10 0V5V during STAND BY

1600-11 +12Vstby

Check the supply currents to be sure there are no large failures

on the board. Before measuring the currents, make sure that

no A/V board, display board or Mercury 1 loader is connected

to the mono board and that the PC interface cable is connected

to the board.

Also check if the servo part gets its power.

Testpoint F608: +3V3

Testpoint F101: +9V ±5%

The supply currents can be measured using a Tektronix

AM503B current probe.

Supply power consumption

3V3 400mA ±10%

5V 370mA ±10%

5Vstby < 5mA

-8V 55mA ±10% fluctuation: ±20mA

12Vstby 30mA ±20% fluctuation: ±150mA

5.2.2 Reset check:

The reset circuit is triggered by the stand-by line. First make

sure that the STB_CONT line is HIGH by connecting 5V to

testpoint F505.

Then switch STB_CONT over to LOW and check next timing at

the STI5505 reset input (testpoint F503):

Figure 5-1

T 1 = 150msec ±25% (From 0V to 3V3 -3db)

If the reset input doesn’t go high then check the circuit around

transistor 7501.

5.2.3 Clock check

To check the correct functioning of the STI5505, we first have

to check the presence of all clocks.

All clocks to be measured with 0.02% tolerance.

Clock-name Testpoint Frequency

27M_CLK F051 27MHz

PCM_CLK F566 11.2896MHz

Figure 5-2

PM3392A

ch2

ch1

ch1: dT= 148ms dV=2.41 V

CH1 1.00 V=

CH2 0.2 V= MTB50.0ms- 2.10dv ch2-

RESET TIMING

CL06532065_003.eps

180500

PM3394B

ch1

CH1 2.00 V~ MTB20.0ns ch1+

CL06532065_004.eps

180500

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Marantz DV4100 User Manual Page 65

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