Dolby Laboratories CP65 manual These Modules are Necessary for Bypass Operation

2-11

STEP 10 If they are not already installed in the CP65 card cage, install all of the cards for your system as shown.

THESE MODULES ARE

NECESSARY FOR BYPASS

OPERATION

Cat. No.	Cat. No.	Cat. No.	Cat. No.	Cat. No.	Cat. No.	Cat. No.	Cat. No.
240A	240A	350 SR	350 SR	222	150	64	64
(spare)	optical	300 SR/A	300 SR/A	2-channel	2:4 ch	EQ	EQ
	preamp	450 A	450 A	A-type	decoder	L	C
		Lt	Rt	Lt/Rt
		(C)	(S)	(L,R)

Cat. No.

64

EQ

R

Cat. No.	Cat. No.	Cat. No.	Cat. No.
441	242	443	249
surround	B chain	control	voltage
and			regulator
subwoofer
signal	mono eq

Cat. No.

	259
transformer
module
normal	spare

Proj. 1

GAIN Lt

hf

GAIN Rt

hf Lt tp

Lt

signal present

Rt

Rt tp

GAIN Lt

hf

GAIN Rt

hf

Proj. 2 gnd

Dolby SR

Dolby SR

Lt

Rt

Dolby

L

signal C present R

S

delay 4

Lt tp

Rt tp

gnd

Dolby

Dolby

Dolby

Subwoofer

n-sync surr gain

Right SurroundLeft Surround

present		mono
	tp	gain	L
	on	non-sync
	cut		R
auto	freq		L
off	Q				24V
			C	power
		signal
opt gain				supply	15V
mag/dig		present R		status	15V
gain			Ls
treble
		gnd
	cut
			L
mid	freq
	Q	test	C
	bass	points	R
	tp		Ls
treble
	cut
mid	freq		L
	Q	gain	C		bypass
			R
	bass
	gain		Ls		gain
	gnd
signal
present

fuse
bypass	spare
fuse
normal	bypass
	(reset)

Card Descriptions:
Slot
No.	Card	Function
1	Slot for spare	Spare location for Cat. No. 240A (or the older
	Cat. No. 240A Card	Cat. No. 240).
2	Cat. No. 240A	Amplifies the outputs of the solar cell in the
	Optical Preamplifier	selected projector. Electronic switches select
	Card	projector No. 1 or 2. The older Cat. No. 240 may also
		be used.
3,4	Cat. No. 350	Each module contains a single channel
	Spectral recording	of Dolby spectral recording (SR) processing
	Modules	for optical soundtracks recorded with Dolby SR (Format
		05).

Note:

1)Some installations may use two Cat. No. 300 SR/A Processing modules in place of Cat. No. 350.

2)In CP65-A, Cat. No. 350/300 are not fitted and the slots are empty.