Arcam A38, P38 manual No sound, Sound cuts-out unexpectedly, Amplifier does not switch back on

Troubleshooting

If you are having trouble with your amplifier, check the following items.

No sound

Check the following:

<Both the A38 and (if applicable) P38 power- amplifiers are switched on.

<The amplifier is not muted (indicated on the A38 by Muted being shown on the front-panel).

<The selected source is generating audio (e.g., if CD is selected, then the CD is playing).

<The AV input is not selected on the A38 (indicated by the light above the AV button being illuminated), instead of the expected source. In this case, press AV again to de-select the AV input.

<The speaker outputs are enabled on the A38/P38, as indicated by the lights above the SP1 and/or SP2 buttons (as appropriate) being illuminated.

Sound cuts-out unexpectedly

If the temperature of the internal heatsink rises above a safe level, then a thermal cut-out inside the amplifier operates to protect the unit. During this time, the power indicator on the front panel flashes and the protection system temporarily removes power to the speakers. The system will reset itself as the heatsink cools down.

<With two pairs of low-impedance speakers

connected (6Ω or less), overloads are more likely. Overloading the amplifier may cause it to shut down because of overheating.

<Note that, due to the high output voltage from a CD player, it is possible to drive your amplifier at full power even though the volume is not set at maximum. See page 11 to adjust the input trim of a CD player or other input device.

Amplifier does not switch back on

Both the amplifiers detailed in this handbook have a protection mechanism which is activated if you switch the unit on immediately after turning it off. If this mechanism activates, wait 30 seconds before switching the unit on again.

Remote-control codes

The following tables give the infrared commands accepted by the A38.
Power commands		Menu navigation commands
Command	Decimal Code	Command	Decimal Code
Power toggle	16–12	Up	16–32
Power-on	16–123	Down	16–33
Power-off	16–124	Select	16–37
		Enter	16–87
Source selection commands
Command	Decimal Code	Display control commands
SAT select	16–0
PHONO select	16–1	Command	Decimal Code
AV select	16–2	Display	16–59
Tuner select	16–3
DVD select	16–4	Volume control commands
PVR select	16–6	Mute	16–13
CD select	16–7	Volume up	16–16
Aux select	16–8	Volume down	16–17

The following tables give commands accepted by the P38.

Power commands		Speaker control commands
Command	Decimal Code	Command	Decimal Code
Power toggle	16–12	Speaker 1 toggle	16–35
Power-on	16–123	Speaker 2 toggle	16–39
Power-off	16–124	Speaker 1 on	16–43
		Speaker 1 off	16–44
		Speaker 2 on	16–45
		Speaker 2 off	16–46

Note that the A38 also responds to code 20–53 (the Play command for an Arcam CD player). The A38 switches automatically to CD input on receiving this command.

English

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