XL-MP333H/XL-MP444H
6 – 1
AudioXL-MP333H/XL-MP444HService ManualXL-MP333H/XL-MP444HMarketE
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] NOTES ON SCHEMATIC DIAGRAM
•Resistor:
To differentiate the units of resistors, such symbol as K and M are
used: the symbol K means 1000 ohm and the symbol M means
1000 kohm and the resistor without any symbol is ohm-type resis-
tor. Besides, the one with “Fusible” is a fuse type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this symbol P
means micro-micro-farad and the unit of the capacitor without such
a symbol is microfarad. As to electrolytic capacitor, the expression
“capacitance/withstand voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
• Schematic diagram and Wiring Side of P.W.Board for this model
are subject to change for improvement without prior notice.
• The indicated voltage in each section is the one measured by Digi-
tal Multimeter between such a section and the chassis with no sig-
nal given.
1. In the tuner section,
( ) indicates AM
< > indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
• Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these parts
with specified ones for maintaining the safety and performance of
the set.
[2] TYPES OF TRANSISTOR AND LED
REF. NO DESCRIPTION POSITION
SW700 VOLUME ON—OFF
SW701 EQUALISER ON—OFF
SW702 TUNING DOWN/STOP ON—OFF
SW703 TUNING UP/PLAY ON—OFF
SW704 PRESET UP ON—OFF
SW705 PRESET DOWN ON—OFF
SW706 DISC1 ON—OFF
SW707 DISC2 ON—OFF
SW708 MEMORY/SET ON—OFF
SW709 ON/STAND-BY ON—OFF
SW710 X-BASS/DEMO ON—OFF
SW711 CD ON—OFF
SW712 TUNER(BAND) ON—OFF
SW713 USB/AUX ON—OFF
SW714 DISC3 ON—OFF
SW715 DISC4 ON—OFF
SW716 DISC5 ON—OFF
SW717 OPEN/CLOSE ON—OFF
REF. NO DESCRIPTION POSITION
(1) (2) (3)
(S) (G) (D)
EC B
FRONT
VIEW
KTC3199 GR
KRA107 M
KRC107 M
KTA1266 GR
2SC535 C
KTC3200 GR
2SB562 C
KTC3203 Y
FRONT
VIEW
2SC3052F+
2SA1235F+
B
(3)
E
(1)
C
(2)
LP3052A
KTA1271 Y
KRC102 M
KRC104 M
2SC380 O
SVC348S
123
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