Service manual

HT-DP2500
– 9 –
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 resistor. 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 electro-
lytic capacitor, the expression “capacitance/withstand volt-
age” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
Figure 9 TYPES OF TRANSISTOR AND LED
• 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
Digital Multimeter between such a section and the chassis
with no signal given.
1. In the tuner section,
( ) indicates AM
< > indicates FM stereo
2. In the main section, VCR1.
3. In the power section, VCR1.
• 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.
SW1 POWER ON—OFF
SW2 TIMER/SLEEP ON—OFF
SW3 DOLBY PROLOGIC ON—OFF
SW4 EQUALIZER ON—OFF
SW5 X-BASS ON—OFF
SW6 ENTER ON—OFF
SW7 VOLUME DOWN ON—OFF
SW8 VOLUME UP ON—OFF
POSITIONREF. NO DESCRIPTION
REF. NO DESCRIPTION POSITION
SW9 MEMORY/SET ON—OFF
SW10 TUNING UP ON—OFF
SW11 TUNING DOWN ON—OFF
SW12 TUNER/BAND ON—OFF
SW13 CD/AUX ON—OFF
SW14 VCR-2 ON—OFF
SW15 VCR-1 ON—OFF
SW23 JOG ON—OFF
(1) (2) (3)
(S) (G) (D)
E C B
FRONT
VIEW
FRONT VIEW
KRA102 M
KRC102 M
KTC3199 GR
2SC535 C
KRC104 M
KTA1266 GR
2SC2878 B
2SD468 C
KRC107 M
KV1236Z23
KDV147 C
FRONT
VIEW
BCE
(D)(G)(S)
(3) (2) (1)
FRONT
VIEW
2SD2012 Y
L1154HDB