Aiphone PG-20C, PG-50C Names and Functions, Fuse, Power L.E.D, VOLUME, Bass & Treble Controls

2 NAMES AND FUNCTIONS

The following controls and terminals may be accessed by removing the screw on the bottom of the unit and lifting the lower cover.

1. Fuse

F1

GND

TB1

1 2

2. Power	3. Volume, Bass &
LED	Treble Controls

LD1

POWER

A1002

SER.

P1 P2 P3 P4 P5 P6 P7

4. Dip Switches				5. Preset
				Controls
SW1	ON	VOX		NOISE				LEV
		P9		P10				P11
P8									9
	1	2	3	4	5	6	7	8

6. Ground 7. Output		8. Terminals 1 - 9
1. FUSE
Replace fuse with 3AG SloBlo's only in the following ratings:
PG-20C 3/4 Amp	PG-50C 1-1/4 Amp	PG-100C 2 Amp

2. POWER L.E.D.

Indicates that the amplifier is on or off.

3. VOLUME, BASS & TREBLE CONTROLS

These controls are normally set at the time of installation, purposely protruding only slightly from the cover so that they can be adjusted if necessary, but are less susceptible to accidental change.

A) PRE-TONE Volume - P1

Adjusts the level of the pre-tone signal over the speakers.

B) MUSIC/AUX Volume - P2, Bass - P3, Treble - P4

Adjusts the level, treble and bass of the background music.

C) TEL/MIC Volume - P5, Bass - P6, Treble - P7

Adjusts the level of the telephone/microphone input separately from the music controls.

D) Adaptor Volume - P8

Adjusts the volume level of the paging via the Aiphone intercom/paging system.

4. DIP SWITCHES	Telephone			Microphone
A) Dip switches 1 & 2 - Telephone/Microphone
		1	2		1	2
If a telephone system is used, set both switches to the ON position.
		ON			ON
If an external microphone is used, set both switches to the OFF position.

B) Dip switch 3 - VOX (Voice activated switch)

Set this switch to the ON position if VOX music muting is going to be used with tel/mic paging.

C) Dip switches 4 & 5 - Talk battery

Set both switches to the ON position to enable this function. This option provides a talk battery to the telephone set or telephone system C.O. trunk.

D) Dip switch 6 - Pre-tone	PD-1	PD-2
Set this switch to the ON position to enable the Pre-tone function.	7 8	7 8
E) Dip switches 7 & 8 - Paging adaptor option	ON	ON
For PD-1 adaptor, set both switches to the OFF position.
(The PD-1 is used for paging in the TD-H and TD-Z systems)
		MC-A
For PD-2 adaptor, set switch 7 to the OFF position and switch 8 to the ON position.
		7	8
(The PD-2 is used for paging and talkback in the TD-H and TD-Z systems)
		ON
For MC-A adaptor, set switch 7 to the ON position and switch 8 to the OFF position.
(The MC-A is used for paging with the MC-60/4, RCX, and YKX systems)

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