Read JBL ARC CINEMA II Service Manual online
1 5
Dolby Pro-Logic
Ò
A/V Receiver
JSR-400
4) TEST TONE GENERATOR
The test tone generator generates a test tone (noise) to check the balance of sound output from each speaker in the Dolby
The test tone generator generates a test tone (noise) to check the balance of sound output from each speaker in the Dolby
Pro-Logic mode. (This circuit is produced under license of the Dolby Laboritories Licensing Corp.) The test tone to the
loudspeakers at 2 second intervals in the following sequence: Left, Center, Right, Rear (both rear channels).
2. DIGITAL TUNING SYSTEM DESCRIPTION.
1) DIGITAL TUNING SYSTEM
FM FRONT END PACK
FM ANT
AM ANT
FM RF
AM RF
FM MIX
AM MIX
FM OSC
AM OSC
BUFFER
BUFFER
FM PLL Loop
AM PLL Loop
Low Pass Filter
Q201, 202
FM IN
AM IN
IC2
PLL Prescaler
CPU
IC1
Data
FL
Display
Key
Switch
Matrix
Adaptive
Matrix
Noise
Sequencer
Input
Auto-
Balance
Control
S
IC11
NJU9702
Time
Delay
IC10 NJW1102
L
B
C
B
C
S
Center/
Operating
Mode
Channel
L-ch
R-ch
C-ch
S-ch
Noise signal output
Fig. 5
Flow of noise signals within the system
Click on the first or last page to see other ARC CINEMA II service manuals if exist.