Service manual

HT-X1
5 – 1
AudioHT-X1Service ManualHT-X1MarketE
CHAPTER 5. CIRCUIT DESCRIPTION
[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 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.
• 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 CD section, the CD is stopped.
• Parts marked with “ “ ( ) are important for main-
taining 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
REF. NO DESCRIPTION POSITION
SW700 JOG VOLUME ON—OFF
SW701 POWER ON—OFF
SW702 PLAY ON—OFF
SW703 STOP ON—OFF
SW704 EJECT ON—OFF
SW705 TUNER ON—OFF
SW706 FUNCTION ON—OFF
SW707 PRESET UP ON—OFF
SW708 PRESET DOWN ON—OFF
REF. NO DESCRIPTION POSITION
2SD601 AR
B
(3)
E
(1)
C
(2)
TOP
VIEW
2HC1815 GR
2SC535 C
2SC380 O
KRC104 M
KTA1266 GR
KTA1271 Y
KRA107 M
VIEW
FRONT
ECB
(S)(G)(D)
(1)(2)(3)
KRC107 M
KTC3199 GR
KTC3200 GR
KTC3203 Y
2SB561 C
2SB562 C