Service manual

XL-MP40H
6 – 1
AudioXL-MP40HService ManualXLMP40HMarketE
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 ON/STAND-BY ON—OFF
SW702 STOP/TUNING DOWN ON—OFF
SW703 REW/PRESET DOWN ON—OFF
SW704 PLAY/CD PAUSE/TUNING UP ON—OFF
SW705 MEMORY/SET ON—OFF
SW706 FUNCTION ON—OFF
SW707 REC/PAUSE ON—OFF
SW708 BASS/TREBLE ON—OFF
SW709 FF/PRESET UP ON—OFF
SW710 DISC EJECT ON—OFF
SW901 FOOL PROOF ON—OFF
SW902 PLAY ON—OFF
REF. NO DESCRIPTION POSITION
(1) (2) (3)
(S) (G) (D)
EC B
FRONT
VIEW
FRONT
VIEW
2HA1015 GR
2HC1815 GR
KTC3200 GR
2SB562 C
KRC101 M
2SB561 C
KRC106 M
KRC107 M
KRA107 M
KTC2026 Y
SVC201
FRONT
VIEW
2SC3052 F+
2SC5477++
2SA1235 F+
B
E
C
SVC347SMPG3372X
2SK2541
B
E
C