Marantz SR4400 Bedienungsanleitung PDF herunterladen (Seite 32)

Micro-Prosessor (ICS18) Version and FLD Segment Check

1. While the power is on, press the CD, TUNER and TUNIGNG UP buttons simultaneously for more than

3 seconds. The FL display shows "SERVICE MODE" for 2 seconds then is shows the model name

(Ex.: "SR4400" ).

2. Press the MODE button. The software version of the micro-processor (ICS18) is displayed in the format below.

3. Press the MODE button again. The left half and the right half of the label area in the FLD light on and off each other.

4. Press the MODE button again. The segments of the charactor area in the FLD ﬁ lck in the checker pattern.

5. Press the MODE button two times to quit this mode.

Product Reset

To reset the buck-up memory in the unit to the default status, follow the procedure below.

1. While the power is on, press the CLEAR and MEMORY buttons simultaneously for more than 3 seconds.

2. The FL display shows "DEFAULT". Then the power is turned off once and turned on again automatically. The

micro-computer is reset, the EEPROM is cleared and the unit returns to the normal operation.

Note: When the unit is shipped from the factory, the procedure above must be done to set the unit to initial status after

the tests.

5251

9. SERVICE PROCEDURE

Idling current Alignment

1. Each of cement resistors are provided with two test points. Set a voltage meter to DC voltage input,

Connect the digital voltage meter to the two test points on a cement resistor.

2. After the setup above, turn the main switch ON and heat up the ampliﬁ er about 10 minutes.

3. Adjust variable resistors (RM114, RM214, ..., RM614) according to the digital voltmeter reading.

The target setting value is 5 ±1mV for each channels.

Settings: Master Volume --- Minimum

Speaker out --- No Load

Top lid --- Open

DC Offset Alignment

Settings: Master Volume --- Minimum

Speaker out --- No Load

Channel

Alignment

Point

Measurement

Point

Front L RM514 JM501

Center RM114 JM101

Front R RM314 JM301

Surr. L RM414 JM401

Surr. R RM214 JM201

SB RM614 JM601

Power Channel

Adjustment

Point

Measurement

Point

Alignment Target

Front L RM506

Center RM106

Front R RM306

Surr. L RM406

Surr. R RM206

SB RM606

Speaker

Output

Terminal

0 ±40mV

VE R . 0 3 03 1 1 N

Year

Version

Month Date

Ex: N - /N1B/N1S/A1B/A1

U - /U1B

K - /K1G

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 62 63

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