Roland CE 20 Service Manual

Thank you, and congratulations on your choice of BOSS CE-20 Dimensional Processor.

Before using this unit, carefully read the sections entitled: “USING THE UNIT SAFELY” and “IMPORTANT NOTES” (separate sheet). These sections provide important information concerning the proper operation of the unit. Additionally, in order to feel assured that you have gained a good grasp of every feature provided by your new unit, this manual should be read in its entirety. The manual should be saved and kept on hand as a convenient reference.

Main Features

●

Provides six chorus sound types, including newly developed “RICH,” “BASS,” and “ACOUSTIC” sounds, plus CE-1 and SDD-320 modeling.

●

New “BRILLIANCE” control lets you adjust the guitar’s harmonic content and the chorus’s characteristic glistening effect.

●

“AMBIENCE” control developed especially for chorus lets you add greater body and richness to the chorus effect.

●

All inputs and outputs are stereo-compatible.

●

Internal preamp (+4 dBu) lets you apply chorus to guitar and bass amp sends and returns even after sounds are created.

●

Comes equipped with a headphone jack, allowing you to use headphones for easy monitoring.

●

Can run on battery power (six R6/LR6 (AA) type).

Installing Batteries

Batteries are supplied with the unit. The life of these batteries may be limited, however, since their primary purpose was to enable testing. Insert the included batteries as shown in figure, being careful to orient the batteries correctly.

fig.02

• When turning the unit upside-down, get a bunch of newspapers or magazines, and place them under the four corners or at both ends to prevent damage to the buttons and controls. Also, you should try to orient the unit so no buttons or controls get damaged.

• When turning the unit upside-down, handle with care to avoid dropping it, or allowing it to fall or tip over.

• Make sure the “+” and “–” ends of the batteries are oriented correctly.

• When the batteries run down, the POWER indicator gets dim. If this happens, replace with new batteries.

• When replacing the batteries, use six AA type.

• Avoid using new batteries together with used ones. In addition, avoid mixing different types of batteries. Doing so can result in fluid leakage.

• Battery life can vary depending on battery type.

Continuous usage time under battery power is about 10 hours with alkaline batteries and about 4 hours with carbon batteries. (This may vary according to usage conditions.)

Making the Connections

• The use of an AC adaptor is recommended as the unit’s power consumption is relatively high. Should you prefer to use batteries, please use the alkaline type.

• Noise may be produced if wireless communications devices, such as cell phones, are operated in the vicinity of this unit. Such noise could occur when receiving or initiating a call, or while conversing. Should you experience such problems, you should relocate such wireless devices so they are at a greater distance from this unit, or switch them off.

• Use a cable from Roland to make the connection. If using some other make of connection cable, please note the following precautions.

• Some connection cables contain resistors. Do not use cables that incorporate

resistors for connecting to this unit. The use of such cables can cause the sound level to be extremely low, or impossible to hear. For information on cable specifications, contact the manufacturer of the cable.

• When the unit is running on battery power, the power comes on when you insert the connector plug into the INPUT R (MONO) jack.

• To prevent malfunction and/or damage to speakers or other devices, always turn down the volume, and turn off the power on all devices before making any connections.

• If there are batteries in the unit while an AC adaptor is being used, normal operation will continue should the line voltage be interrupted (power blackout or power cord disconnection).

• Once the connections have been completed, turn on power to your various devices in the order specified. By turning on devices in the wrong order, you risk causing malfunction and/or damage to speakers and other devices. When powering up: Turn on the power to your guitar amp When powering down: Turn off the power to your guitar amp

• Always make sure to have the volume level turned down before switching on power. Even with the volume all the way down, you may still hear some sound when the power is switched on, but this is normal, and does not indicate a malfunction.

• When operating on battery power only, the unit’s indicator will become dim when battery power gets too low. Replace the battery as soon as possible.

• Turn on the power before you connect headphones. When turning off the power, first unplug the headphones, then switch off the power.

• Please observe due caution when using headphones while the LEVEL switch is set to +4 dBu, since their volume may get significantly higher.

last

first

Making the Connections

Connecting to a Guitar/Bass Amp

Monaural Connection

fig.03

Electric Bass

Electric Guitar

Stereo Connection

fig.04

Electric Guitar

(Bass Guitar)

AC Adaptor PSA-series (option)

Guitar AmplifierBass Amplifier

AC Adaptor PSA-series (option)

Guitar Amplifier (Bass Amplifier)

Making the Connections

Connecting the Stereo Output and the Effects Processor

fig.05

AC Adaptor PSA-series (option)

Effecter

Electric Guitar

(Bass Guitar)

Guitar Amplifier (Bass Amplifier)

Making the Connections

Connecting to SEND/RETURN on the Guitar/Bass Amp

* Match the send output level on the guitar/bass amp and the level setting on the unit. If the

PEAK indicator lights up frequently, turn down the output on the guitar/bass amp.

* When the guitar/bass amp’s SEND/RETURN level is at +4 dBu, set the LEVEL switch on

the rear panel of the unit to +4 dBu.

Monaural Send/Monaural Return

fig.06

AC Adaptor PSA-series (option)

SEND RETURN

Electric Guitar

(Bass Guitar)

Guitar Amplifier (Bass Amplifier)

Monaural Send/Monaural Return

fig.06a

SEND

Electric Guitar

(Bass Guitar)

Guitar Amplifier (Bass Amplifier)

AC Adaptor PSA-series (option)

RETURN LRETURN R

Connecting to an MTR or Mixer

Monaural Connection

fig.07

Electric Guitar

(Bass Guitar)

MixerMTR

Stereo Connection

fig.08

Making the Connections

AC Adaptor PSA-series (option)

Electric Guitar

(Bass Guitar)

AC Adaptor PSA-series (option)

MixerMTR

Making the Connections

Connecting to SEND/RETURN on the MTR or Mixer

* Match the send output level on the MTR or Mixer and the level setting on the unit. If the

PEAK indicator lights up frequently, turn down the output on the MTR or Mixer.

* When the MTR or Mixer’s SEND/RETURN level is at +4 dBu, set the LEVEL switch on

the rear panel of the unit to +4 dBu.

When the CE-20 is connected to a mixer’s or multitrack recorder’s sends or returns, you can then elect to output only the chorus sound, with the direct sound turned off. For more details, refer to “Switching the Direct Sound On and Off” (p. 22).

Monaural Send/Monaural Return

fig.09

AC Adaptor PSA-series (option)

SEND RETURN

MixerMTR

Monaural Send/Stereo Return

fig.10

SEND RETURN R RETURN L

Stereo Send/Stereo Return

fig.11

Making the Connections

AC Adaptor PSA-series (option)

MixerMTR

SEND R SEND L

RETURN R RETURN L

AC Adaptor PSA-series (option)

MixerMTR

Operation

“MANUAL” is selected when the power is turned on.

EFFECT ON/OFF Pedal Operation

fig.12

When at “ON”

←

Lit

Each press of the EFFECT ON/OFF pedal switches effects on or off. When effects are off, the sound coming in through the INPUT jack is output unchanged.

* When direct sound is set to OFF, no signal is output from the

OUTPUT jacks when the effects are off. When the effects are turned on, only the effect sound is output. The factory default setting for direct sound is ON.

“Switching the Direct Sound On and Off” (p. 22)

When at “OFF”

←

Not Lit

+ 22 hidden pages