Marantz MR235 - Introduction; Printed Circuit Board (P.W. Board) Identification; Tuner Board (P100); Phono Amp Board (P400)

MODEL 1530/MR230/MR235 STEREOPHONIC RECEIVER
INTRODUCTION
This service manual was prepared for use by Authorized
Warranty Stations and contains service information for
Marantz Model 1530/MR230/MR235 Stereophonic
Receiver.
Servicing information and voltage data included in this
manual are intended for use by the knowledgeable and
experienced technician only. All instructions should be read
carefully. No attempt should be made to proceed without a
good understanding of the operation of the receiver.
The parts list furnishes information by which replacement
parts may be ordered from the Marantz Company. A simple
description is included for parts which can usually be
obtained through local suppliers.
Figure 1. Dial Stringing
am, fm Soave receiver
‘ SYSTEM. Ft
SPEAKERS
1. P.W. BOARDS
As can be seen from the circuit diagram, the chassis of
Model 1530/MR230/MR235 consists of the following units.
Each unit mounted on a printed circuit board is described
within the square enclosed by a bold dotted line on the
circuit diagram.
Te. TUONO 02a ea Sasi oe k s mounted on P.W. Board P100
2. Phono Amp........ mounted on P.W. Board P400
3. Main Amp &
Power Supply .:.... mounted on P.W. Board P700
4. Antenna lnput...... mounted on P.W. Board PCOO
5. Tone Amp......... mounted on P.W. Board PEOO
6. Power Transistor mounted on P.W. Board PNO1
D2 PUSEs woe eck iat hib ace eee mounted on P.W. Board PPO1
8. Filter & Switch ..... mounted on P.W. Board PSOO
BE De. gek aveck: Gein Spe mounted on P.W. Board PYO1