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XL-HP404E/HP404H
6 – 1
Audio
XL-HP404E/HP404H
Service Manual
XL-HP404H
Market
E
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.
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 pico-farad and the unit of the capacitor without such a sym-
bol is microfarad. As to electrolytic capacitor, the expression
“capacitance/withstand voltage” is used.
means pico-farad and the unit of the capacitor without such a sym-
bol 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.
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.
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.
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.
with specified ones for maintaining the safety and performance of
the set.
[2] TYPES OF TRANSISTOR AND LED
REF. NO
DESCRIPTION
POSITION
SW1
CLAMP
ON—OFF
SW1A
PICKUP IN
ON—OFF
SW2
TRAY SW1
ON—OFF
SW3
TRAY SW2
ON—OFF
SW4
DISC
ON—OFF
SW701
ON/STAND-BY
ON—OFF
SW702
CLOCK/TIMER
ON—OFF
SW703
REVERSE MODE
ON—OFF
SW704
REVERSE PLAY
ON—OFF
SW705
PRESET DOWN
ON—OFF
SW706
ASPM [XL-HP404H ONLY]
ON—OFF
SW707
PTY. TI SEARCH [XL-HP404H ONLY]
ON—OFF
SW708
DISPLAY MODE [XL-HP404H ONLY]
ON—OFF
SW709
CD
ON—OFF
SW710
TUNER (BAND)
ON—OFF
SW711
VIDEO/AUX
ON—OFF
SW712
TAPE
ON—OFF
SW713
REC/PAUSE
ON—OFF
SW714
TUNING/TIME UP
ON—OFF
SW715
TUNING/TIME DOWN
ON—OFF
SW716
STOP
ON—OFF
SW717
PLAY
ON—OFF
SW718
PRESET UP
ON—OFF
SW719
X-BASS/DEMO
ON—OFF
SW720
EQUALISER
ON—OFF
SW721
MEMORY/SET
ON—OFF
SW722
DIRECT PLAY
ON—OFF
SW723
DISC 1
ON—OFF
SW724
DISC 2
ON—OFF
SW725
DISC 3
ON—OFF
SW726
DISC 4
ON—OFF
SW727
DISC 5
ON—OFF
SW728
OPEN/CLOSE
ON—OFF
REF. NO
DESCRIPTION
POSITION
(1) (2) (3)
(S) (G) (D)
E C B
FRONT
VIEW
KRC102 S
KRC104 S
KRA107 S
KTA1504 Y
KTA1271 Y
KTA1273 Y
KTA1274 Y
SVC347S
FRONT
VIEW
KTA1504 GR
KTC3199 GR
KTC3200 GR
KTC3875 GR
KTC3203 Y
2SC380 O
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