Mitsubishi SL2U Service Manual page 82

PCB-BLOCK DIAGRAM
SW9F1
CONTENTS
PCB-BLOCK DIAGRAM ···················· C-1
RGBDEC PCB-MAIN(1/8) ················ C-2
DIGITAL1 PCB-MAIN(2/8), PCB-TERMINAL ··· C-3
DIGITAL2 PCB-MAIN(3/8) ················ C-4
DRIVE1 PCB-MAIN(4/8) ·················· C-5
DRIVE2 PCB-MAIN(5/8) ·················· C-6
DRIVE3 PCB-MAIN(6/8) ·················· C-6
MICROCOM1 PCB-MAIN(7/8) ········· C-7
MICROCOM2 PCB-MAIN(8/8) ········· C-8
PCB-SENSOR, PCB-INLET, PCB-PREAMP ··· C-9
PCB-AUDIO, PCB-POWER ··············· C-9
SL2U
C-1
XL2U
SN
RE
RN
GN
SJ
GE
NJ
SZ
SK
SL
TK
AL
NOTE
1. TP6A, etc. show Test Points.
2. Capacitors
Value Not indicated
Dielectric
Not indicated : 50V
Strength
Not indicated =
Tolerance G = ±
J = ±
= ±
K
= ±
M
ST
Parts
except
I
chips
Sort
II Chips
Characteristic
Not indicated : F or B (high dielectric percentage)
(only ceramic
CH,SH,etc : Temperature compensating types
capacitor)
3. Resistors
Not indicated =
Value
Parts
except
Wattage for chips
Chips
Not indicated =
Tolerance
Parts
except
I
Sort
chips
II Chips
4. This is basic schematic diagram.
Some sets may be subject to modification according to engineering imporovement.
Zener Diode
Varicap
Positive Thermistor
P
Thermistor
T
Photo Diode
LED
5. Correspondence of the units in the Schematic
Diagrams to the SI units.
Schematic Diagram
Kiro
Hertz
Pico
SERVICING PRECAUTION
SYMBOLS INDICATE COMPONENTS HAVING SPECIAL
CHARACTERISTICS IMPORTANT TO SAFETY AND
PERFORMANCE. THEREFORE REPLACEMENT OF ANY
SAFETY PARTS SHOULD BE IDENTICAL IN VALUE AND
CHARACTERISTICS. FOR ACCURACY OF THE
REPLACEMENT REFER TO THE PARTS LIST OF
SERVICE MANUAL.
DON'T DEGRADE THE SAFETY OF THE RECEIVERS
THROUGH IMPROPER SERVICING.
SHADED COMPONENTS HAVE SPECIAL
CHARACTERISTICS IMPORTANT TO SAFETY.
B E F O R E R E P L AC I N G A N Y O F T H E S E
C O M P O N E N T S R E A D C A R E F U L LY T H E
PRODUCT SAFETY NOTICE IN THE SERVICE
MANUAL.
DON'T DEGRADE THE SAFETY OF THE
RECEIVERS THROUGH IMPROPER SERVICING.
SS
pF, for numbers more than 1
µF, for numbers less than 1
± 10 %
No Tolerance is indicated
for electrolytic capacitors
and ± 20 %
2 % N = ± 30 % Q = + 30 % C = ± 0.25 pF
5 % – 10 % D = ± 0.5 pF
= ±
10 % P = + 100 % Z = + 80 % F 1 pF
= ±
20 % – 0 % – 20 % G 2 pF
Not indicated : Ceramic capacitor
MF : Polyester capacitor
PP : Polypropylene film capacitor
ALM : Aluminus electrolytic capacitor
TF : Twin film capacitor
SC : Semiconductor ceramic capacitor
MP : Metalized paper capacitor
for MPP : Metalized plastic film capacitor
MMF : Metalized polyester capacitor
MF,PP : Polyester polypropylene film capacitor
PS : Styrol capacitor
TAN or TANT : Tantalum capacitor
: Electrolytic capacitor
BP or NP : Non polarized electrolytic capacitor
Not indicated : Ceramic capacitor chip
: Electrolytic capacitor chip
BP or NP : Non polarized electrolytic capacitor chip
Ω
K = kΩ (1000Ω)
M = MΩ (1000kΩ)
Not indicated = 1/4W or 1/6W
Not indicated = 1/10W
±
5 %
= ± = ±
D 0.5 % J 5 %
F = ± 1 % K = ± 10 %
Not indicated : Carbon resistor
S : Fixed composition resistor
MB : Metal oxide film resistor (type B)
CE : Cemented resistor
for W : Wire wound resistor
M : Metal film resistor
MPC : Metal plate cement resistor
ML : Metal liner resistor
Not indicated : Chip resistor
SPECIFIC SYMBOL
Fusible Resistor
Crystal unit
Air Gap
Part (resistor) attached on the
copper-foil side of PCB
Ceramic filter
SI
K k
HZ Hz
P p