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Circuit Diagrams and PWB Layouts
SSB: SRP List Explanation
Example
1 . 1 .
Introduction
Net Name
Diagram
+12-15V
AP1 (4x)
+12-15V
AP4 (4x)
SRP (Service Re ference Protocol) is a softw are too l that creates a list w i th all refer e n c es to signal lines. The list contains
+12-15V
AP5 (12x)
references to the signals w i thin all schemat ics of a PWB. It replaces the text refe r ences currentl y p r inted next t o the signal
+12-15V
AP6 (4x)
+12-15V
AP7 (8x)
names in the schematics. These printed refe rences are created man ually an d are t h e r efore n o t guar an teed to be 100 %
+12V
AP1 (4x)
correct. In additio n , in the current crowded schema t ics there is often none or ver y little pl ace for these references.
+12V_NF
AP1 (2x)
+12VAL
AP1 (2x)
Some of the PW B schematics w ill use SRP while others w ill sti ll use the manual refe rences. Either there w ill be an SRP
+25VLP
AP1 (4x)
+25VLP
AP2 (1x)
r e fer ence list for a schematic, or ther e w ill be pr inted r e ferences in the schematic.
+3V3-STANDBY
AP5 (3x)
+400V-F
AP1 (2x)
+400V-F
AP2 (2x)
+400V-F
AP3 (2x)
1.2.
No n - SRP Schematics
+5V2
AP1 (6x)
+5V2
AP2 (1x)
+5V2-NF
AP1 (1x)
There a r e severa l different signals available in a schematic:
+5V2-NF
AP2 (1x)
+5V-SW
AP1 (6x)
+5V-SW
AP2 (1x)
+8V6
AP1 (3x)
1.2.1.
Po w e r Supply Lines
+AUX
AP1 (2x)
+AUX
AP2 (1x)
+DC-F
AP1 (2x)
All pow er suppl y lines are available in t he suppl y line overview (see chapter 6). I n th e schematics (se e chapter 7) is n o t
+DC-F
AP3 (2x)
+SUB-SPEAKER
AP5 (1x)
indicated w h e r e supplies are coming from or going to.
+SUB-SPEAKER
AP6 (2x)
-12-15V
AP1 (4x)
It is how ever indi cated if a supply is incoming (created elsew h e r e), o r outgoing (cr eat ed or adapt ed in the current sche m atic).
-12-15V
AP4 (6x)
-12-15V
AP5 (14x)
-12-15V
AP6 (6x)
+5 V
+5 V
-12-15V
AP7 (8x)
AL-OFF
AP1 (2x)
Outgoing
Incoming
AUDIO-L
AP4 (1x)
AUDIO-L
AP5 (1x)
AUDIO-PROT
AP5 (3x)
1.2.2.
Normal Signals
AUDIO-R
AP4 (1x)
AUDIO-R
AP5 (1x)
AUDIO-SW
AP5 (1x)
AUDIO-SW
AP7 (1x)
For no rmal signals, a schematic r e ference (e. g . B1 4b) is placed next to the signals.
BOOST
AP1 (2x)
CPROT
AP4 (2x)
CPROT
AP5 (1x)
CPROT-SW
AP5 (1x)
B 14b
si gnal _nam e
CPROT-SW
AP6 (2x)
-DC-F
AP1 (2x)
-DC-F
AP3 (2x)
DC-PROT
AP1 (1x)
DC-PROT
AP5 (2x)
DIM-CONTROL
AP1 (2x)
1.2.3.
Grounds
FEEDBACK+SW
AP6 (2x)
FEEDBACK-L
AP4 (2x)
FEEDBACK-R
AP4 (2x)
FEEDBACK-SW
AP6 (2x)
For no rmal and s pecial grounds (e .g. GN DH OT o r GND3V3 etc.), n o thing is indicate d.
GND-AL
AP1 (2x)
GNDHA
AP1 (40x)
GNDHA
AP2 (20x)
GNDHA
AP3 (2x)
1.3.
SRP Schematics
GNDHOT
AP3 (2x)
GND-L
AP1 (2x)
GND-L
AP4 (4x)
GND-L
AP5 (34x)
SRP is a tool, w h ich automatically creates a list w i th signal reference s , indicating on which sc hematic t he signals are used.
GND-LL
AP4 (7x)
A reference is cr eated for all signals indicat ed w i th an SRP s y mbol, these s y mbols are:
GND-LL
AP5 (1x)
GND-LR
AP4 (7x)
GND-LR
AP5 (1x)
GND-LSW
AP5 (1x)
+5 V
+5 V
GND-LSW
AP6 (15x)
GND-S
AP1 (11x)
GND-SA
AP4 (8x)
GND-SA
AP5 (2x)
GND-SA
AP6 (8x)
GND-SA
AP7 (6x)
na m e
GNDscrew
AP3 (2x)
GNDscrew
AP5 (2x)
GND-SSB
AP5 (3x)
na m e
GND-SSP
AP1 (51x)
GND-SSP
AP2 (15x)
IN+SW
AP6 (2x)
IN-L
AP4 (2x)
IN-R
AP4 (2x)
IN-SW
AP6 (2x)
INV-MUTE
AP4 (1x)
na m e
INV-MUTE
AP5 (1x)
INV-MUTE
AP6 (1x)
LEFT-SPEAKER
AP4 (1x)
LEFT-SPEAKER
AP5 (1x)
MUTE
AP4 (2x)
MUTE
AP5 (1x)
na m e
MUTE
AP6 (2x)
ON-OFF
AP1 (3x)
Bi-directional lin e (e.g. SDA ) into a w i r e tree.
OUT
AP6 (1x)
OUT
AP7 (2x)
OUTN
AP6 (1x)
na m e
OUTN
AP7 (1x)
POWER-GOOD
AP1 (2x)
Signal line into a w i r e tree, its dir e ction depends on t he circuit (e.g. ingoing for PD P, outgoing for L C D sets).
POWER-OK-PLATFORM AP1 (2x)
RIGHT-SPEAKER
AP4 (1x)
RIGHT-SPEAKER
AP5 (1x)
Remarks:
SOUND-ENABLE
AP5 (3x)
STANDBY
AP1 (5x)
•
When there is a black dot on the "signal dire ction arrow" it is an SRP symbol, so there will be a reference to the signal
STANDBY
AP2 (1x)
-SUB-SPEAKER
AP5 (1x)
name in the SRP list.
-SUB-SPEAKER
AP6 (2x)
V-CLAMP
AP1 (1x)
•
All references to normal grounds (Ground symbols without additi onal text) are not listed in the reference list, this to keep
V-CLAMP
AP3 (2x)
it concise.
•
Signals that are not used in multiple schematics, but only onc e or several times in the same schematic, are included
in the SRP reference list, but only with one reference.
Additional Tip:
When using the PDF service manual file, you can very easily search for signal names and follow the signal over all the
schematics. In Adobe PDF reader:
•
Select the signal name you want to sear ch for, with the "Select text" tool.
•
Copy and paste the signal name in the "Search PDF" tool.
•
Search for all occurrences of the signal name.
•
Now you can quickly jump between the different occurrences and follow the signal over all schematics. It is advised to
"zoom in" to e.g. 150% to see clearly, which text is select ed. Then you can zoom out, to get an overview of the complete
schematic.
PS. It is recommended to use at least Adobe PDF (reader) version 6. x, due to better search possibilities in this version.
LC8.2HA LA
10.
Power suppl y li ne.
na m e
Stand alone signal or sw itching li ne (used as less as possible).
na m e
Signal line into a w i re tree.
na m e
Sw itching line into a w i re tre e .
EN 74
Personal Notes:
E_06532_031.eps
230606
2009-Apr-10
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